Update XStatic-D3 to 3.5.16

Change-Id: If5ec57706d257fd5bf65d2d66c69d5e48934694f

2 files changed, 4782 insertions, 3660 deletions

diff --git a/xstatic/pkg/d3/__init__.py b/xstatic/pkg/d3/__init__.py
index 374fa06..f5c7506 100644
--- a/xstatic/pkg/d3/__init__.py
+++ b/xstatic/pkg/d3/__init__.py
@@ -11,9 +11,9 @@ NAME = __name__.split('.')[-1] # package name (e.g. 'foo' or 'foo_bar')
                                # please use a all-lowercase valid python
                                # package name
 
-VERSION = '3.1.6' # version of the packaged files, please use the upstream
+VERSION = '3.5.16' # version of the packaged files, please use the upstream
                   # version number
-BUILD = '2' # our package build number, so we can release new builds
+BUILD = '0' # our package build number, so we can release new builds
              # with fixes for xstatic stuff.
 PACKAGE_VERSION = VERSION + '.' + BUILD # version used for PyPi
 
diff --git a/xstatic/pkg/d3/data/d3.js b/xstatic/pkg/d3/data/d3.js
index e92fb21..2e70a83 100644
--- a/xstatic/pkg/d3/data/d3.js
+++ b/xstatic/pkg/d3/data/d3.js
@@ -1,32 +1,67 @@
-d3 = function() {
+!function() {
   var d3 = {
-    version: "3.1.6"
+    version: "3.5.16"
   };
+  var d3_arraySlice = [].slice, d3_array = function(list) {
+    return d3_arraySlice.call(list);
+  };
+  var d3_document = this.document;
+  function d3_documentElement(node) {
+    return node && (node.ownerDocument || node.document || node).documentElement;
+  }
+  function d3_window(node) {
+    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
+  }
+  if (d3_document) {
+    try {
+      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
+    } catch (e) {
+      d3_array = function(list) {
+        var i = list.length, array = new Array(i);
+        while (i--) array[i] = list[i];
+        return array;
+      };
+    }
+  }
   if (!Date.now) Date.now = function() {
     return +new Date();
   };
-  var d3_document = document, d3_window = window;
-  try {
-    d3_document.createElement("div").style.setProperty("opacity", 0, "");
-  } catch (error) {
-    var d3_style_prototype = d3_window.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
-    d3_style_prototype.setProperty = function(name, value, priority) {
-      d3_style_setProperty.call(this, name, value + "", priority);
-    };
+  if (d3_document) {
+    try {
+      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
+    } catch (error) {
+      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
+      d3_element_prototype.setAttribute = function(name, value) {
+        d3_element_setAttribute.call(this, name, value + "");
+      };
+      d3_element_prototype.setAttributeNS = function(space, local, value) {
+        d3_element_setAttributeNS.call(this, space, local, value + "");
+      };
+      d3_style_prototype.setProperty = function(name, value, priority) {
+        d3_style_setProperty.call(this, name, value + "", priority);
+      };
+    }
   }
-  d3.ascending = function(a, b) {
+  d3.ascending = d3_ascending;
+  function d3_ascending(a, b) {
     return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
-  };
+  }
   d3.descending = function(a, b) {
     return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
   };
   d3.min = function(array, f) {
     var i = -1, n = array.length, a, b;
     if (arguments.length === 1) {
-      while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
+      while (++i < n) if ((b = array[i]) != null && b >= b) {
+        a = b;
+        break;
+      }
       while (++i < n) if ((b = array[i]) != null && a > b) a = b;
     } else {
-      while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
+        a = b;
+        break;
+      }
       while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
     }
     return a;
@@ -34,10 +69,16 @@ d3 = function() {
   d3.max = function(array, f) {
     var i = -1, n = array.length, a, b;
     if (arguments.length === 1) {
-      while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
+      while (++i < n) if ((b = array[i]) != null && b >= b) {
+        a = b;
+        break;
+      }
       while (++i < n) if ((b = array[i]) != null && b > a) a = b;
     } else {
-      while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
+        a = b;
+        break;
+      }
       while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
     }
     return a;
@@ -45,13 +86,19 @@ d3 = function() {
   d3.extent = function(array, f) {
     var i = -1, n = array.length, a, b, c;
     if (arguments.length === 1) {
-      while (++i < n && ((a = c = array[i]) == null || a != a)) a = c = undefined;
+      while (++i < n) if ((b = array[i]) != null && b >= b) {
+        a = c = b;
+        break;
+      }
       while (++i < n) if ((b = array[i]) != null) {
         if (a > b) a = b;
         if (c < b) c = b;
       }
     } else {
-      while (++i < n && ((a = c = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
+        a = c = b;
+        break;
+      }
       while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
         if (a > b) a = b;
         if (c < b) c = b;
@@ -59,44 +106,76 @@ d3 = function() {
     }
     return [ a, c ];
   };
+  function d3_number(x) {
+    return x === null ? NaN : +x;
+  }
+  function d3_numeric(x) {
+    return !isNaN(x);
+  }
   d3.sum = function(array, f) {
     var s = 0, n = array.length, a, i = -1;
     if (arguments.length === 1) {
-      while (++i < n) if (!isNaN(a = +array[i])) s += a;
+      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
     } else {
-      while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a;
+      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
     }
     return s;
   };
-  function d3_number(x) {
-    return x != null && !isNaN(x);
-  }
   d3.mean = function(array, f) {
-    var n = array.length, a, m = 0, i = -1, j = 0;
+    var s = 0, n = array.length, a, i = -1, j = n;
     if (arguments.length === 1) {
-      while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j;
+      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
     } else {
-      while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j;
+      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
     }
-    return j ? m : undefined;
+    if (j) return s / j;
   };
   d3.quantile = function(values, p) {
     var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
     return e ? v + e * (values[h] - v) : v;
   };
   d3.median = function(array, f) {
-    if (arguments.length > 1) array = array.map(f);
-    array = array.filter(d3_number);
-    return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
+    var numbers = [], n = array.length, a, i = -1;
+    if (arguments.length === 1) {
+      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
+    } else {
+      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
+    }
+    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
   };
-  d3.bisector = function(f) {
+  d3.variance = function(array, f) {
+    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
+    if (arguments.length === 1) {
+      while (++i < n) {
+        if (d3_numeric(a = d3_number(array[i]))) {
+          d = a - m;
+          m += d / ++j;
+          s += d * (a - m);
+        }
+      }
+    } else {
+      while (++i < n) {
+        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
+          d = a - m;
+          m += d / ++j;
+          s += d * (a - m);
+        }
+      }
+    }
+    if (j > 1) return s / (j - 1);
+  };
+  d3.deviation = function() {
+    var v = d3.variance.apply(this, arguments);
+    return v ? Math.sqrt(v) : v;
+  };
+  function d3_bisector(compare) {
     return {
       left: function(a, x, lo, hi) {
         if (arguments.length < 3) lo = 0;
         if (arguments.length < 4) hi = a.length;
         while (lo < hi) {
           var mid = lo + hi >>> 1;
-          if (f.call(a, a[mid], mid) < x) lo = mid + 1; else hi = mid;
+          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
         }
         return lo;
       },
@@ -105,44 +184,56 @@ d3 = function() {
         if (arguments.length < 4) hi = a.length;
         while (lo < hi) {
           var mid = lo + hi >>> 1;
-          if (x < f.call(a, a[mid], mid)) hi = mid; else lo = mid + 1;
+          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
         }
         return lo;
       }
     };
+  }
+  var d3_bisect = d3_bisector(d3_ascending);
+  d3.bisectLeft = d3_bisect.left;
+  d3.bisect = d3.bisectRight = d3_bisect.right;
+  d3.bisector = function(f) {
+    return d3_bisector(f.length === 1 ? function(d, x) {
+      return d3_ascending(f(d), x);
+    } : f);
   };
-  var d3_bisector = d3.bisector(function(d) {
-    return d;
-  });
-  d3.bisectLeft = d3_bisector.left;
-  d3.bisect = d3.bisectRight = d3_bisector.right;
-  d3.shuffle = function(array) {
-    var m = array.length, t, i;
+  d3.shuffle = function(array, i0, i1) {
+    if ((m = arguments.length) < 3) {
+      i1 = array.length;
+      if (m < 2) i0 = 0;
+    }
+    var m = i1 - i0, t, i;
     while (m) {
       i = Math.random() * m-- | 0;
-      t = array[m], array[m] = array[i], array[i] = t;
+      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
     }
     return array;
   };
   d3.permute = function(array, indexes) {
-    var permutes = [], i = -1, n = indexes.length;
-    while (++i < n) permutes[i] = array[indexes[i]];
+    var i = indexes.length, permutes = new Array(i);
+    while (i--) permutes[i] = array[indexes[i]];
     return permutes;
   };
-  d3.zip = function() {
-    if (!(n = arguments.length)) return [];
-    for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m; ) {
-      for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n; ) {
-        zip[j] = arguments[j][i];
+  d3.pairs = function(array) {
+    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
+    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
+    return pairs;
+  };
+  d3.transpose = function(matrix) {
+    if (!(n = matrix.length)) return [];
+    for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
+      for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
+        row[j] = matrix[j][i];
       }
     }
-    return zips;
+    return transpose;
   };
-  function d3_zipLength(d) {
+  function d3_transposeLength(d) {
     return d.length;
   }
-  d3.transpose = function(matrix) {
-    return d3.zip.apply(d3, matrix);
+  d3.zip = function() {
+    return d3.transpose(arguments);
   };
   d3.keys = function(map) {
     var keys = [];
@@ -163,8 +254,19 @@ d3 = function() {
     return entries;
   };
   d3.merge = function(arrays) {
-    return Array.prototype.concat.apply([], arrays);
+    var n = arrays.length, m, i = -1, j = 0, merged, array;
+    while (++i < n) j += arrays[i].length;
+    merged = new Array(j);
+    while (--n >= 0) {
+      array = arrays[n];
+      m = array.length;
+      while (--m >= 0) {
+        merged[--j] = array[m];
+      }
+    }
+    return merged;
   };
+  var abs = Math.abs;
   d3.range = function(start, stop, step) {
     if (arguments.length < 3) {
       step = 1;
@@ -174,7 +276,7 @@ d3 = function() {
       }
     }
     if ((stop - start) / step === Infinity) throw new Error("infinite range");
-    var range = [], k = d3_range_integerScale(Math.abs(step)), i = -1, j;
+    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
     start *= k, stop *= k, step *= k;
     if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
     return range;
@@ -185,70 +287,86 @@ d3 = function() {
     return k;
   }
   function d3_class(ctor, properties) {
-    try {
-      for (var key in properties) {
-        Object.defineProperty(ctor.prototype, key, {
-          value: properties[key],
-          enumerable: false
-        });
-      }
-    } catch (e) {
-      ctor.prototype = properties;
+    for (var key in properties) {
+      Object.defineProperty(ctor.prototype, key, {
+        value: properties[key],
+        enumerable: false
+      });
     }
   }
-  d3.map = function(object) {
+  d3.map = function(object, f) {
     var map = new d3_Map();
-    for (var key in object) map.set(key, object[key]);
+    if (object instanceof d3_Map) {
+      object.forEach(function(key, value) {
+        map.set(key, value);
+      });
+    } else if (Array.isArray(object)) {
+      var i = -1, n = object.length, o;
+      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
+    } else {
+      for (var key in object) map.set(key, object[key]);
+    }
     return map;
   };
-  function d3_Map() {}
+  function d3_Map() {
+    this._ = Object.create(null);
+  }
+  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
   d3_class(d3_Map, {
-    has: function(key) {
-      return d3_map_prefix + key in this;
-    },
+    has: d3_map_has,
     get: function(key) {
-      return this[d3_map_prefix + key];
+      return this._[d3_map_escape(key)];
     },
     set: function(key, value) {
-      return this[d3_map_prefix + key] = value;
-    },
-    remove: function(key) {
-      key = d3_map_prefix + key;
-      return key in this && delete this[key];
-    },
-    keys: function() {
-      var keys = [];
-      this.forEach(function(key) {
-        keys.push(key);
-      });
-      return keys;
+      return this._[d3_map_escape(key)] = value;
     },
+    remove: d3_map_remove,
+    keys: d3_map_keys,
     values: function() {
       var values = [];
-      this.forEach(function(key, value) {
-        values.push(value);
-      });
+      for (var key in this._) values.push(this._[key]);
       return values;
     },
     entries: function() {
       var entries = [];
-      this.forEach(function(key, value) {
-        entries.push({
-          key: key,
-          value: value
-        });
+      for (var key in this._) entries.push({
+        key: d3_map_unescape(key),
+        value: this._[key]
       });
       return entries;
     },
+    size: d3_map_size,
+    empty: d3_map_empty,
     forEach: function(f) {
-      for (var key in this) {
-        if (key.charCodeAt(0) === d3_map_prefixCode) {
-          f.call(this, key.substring(1), this[key]);
-        }
-      }
+      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
     }
   });
-  var d3_map_prefix = "\0", d3_map_prefixCode = d3_map_prefix.charCodeAt(0);
+  function d3_map_escape(key) {
+    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
+  }
+  function d3_map_unescape(key) {
+    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
+  }
+  function d3_map_has(key) {
+    return d3_map_escape(key) in this._;
+  }
+  function d3_map_remove(key) {
+    return (key = d3_map_escape(key)) in this._ && delete this._[key];
+  }
+  function d3_map_keys() {
+    var keys = [];
+    for (var key in this._) keys.push(d3_map_unescape(key));
+    return keys;
+  }
+  function d3_map_size() {
+    var size = 0;
+    for (var key in this._) ++size;
+    return size;
+  }
+  function d3_map_empty() {
+    for (var key in this._) return false;
+    return true;
+  }
   d3.nest = function() {
     var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
     function map(mapType, array, depth) {
@@ -314,38 +432,30 @@ d3 = function() {
   };
   d3.set = function(array) {
     var set = new d3_Set();
-    if (array) for (var i = 0; i < array.length; i++) set.add(array[i]);
+    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
     return set;
   };
-  function d3_Set() {}
+  function d3_Set() {
+    this._ = Object.create(null);
+  }
   d3_class(d3_Set, {
-    has: function(value) {
-      return d3_map_prefix + value in this;
-    },
-    add: function(value) {
-      this[d3_map_prefix + value] = true;
-      return value;
-    },
-    remove: function(value) {
-      value = d3_map_prefix + value;
-      return value in this && delete this[value];
-    },
-    values: function() {
-      var values = [];
-      this.forEach(function(value) {
-        values.push(value);
-      });
-      return values;
+    has: d3_map_has,
+    add: function(key) {
+      this._[d3_map_escape(key += "")] = true;
+      return key;
     },
+    remove: d3_map_remove,
+    values: d3_map_keys,
+    size: d3_map_size,
+    empty: d3_map_empty,
     forEach: function(f) {
-      for (var value in this) {
-        if (value.charCodeAt(0) === d3_map_prefixCode) {
-          f.call(this, value.substring(1));
-        }
-      }
+      for (var key in this._) f.call(this, d3_map_unescape(key));
     }
   });
   d3.behavior = {};
+  function d3_identity(d) {
+    return d;
+  }
   d3.rebind = function(target, source) {
     var i = 1, n = arguments.length, method;
     while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
@@ -357,6 +467,16 @@ d3 = function() {
       return value === source ? target : value;
     };
   }
+  function d3_vendorSymbol(object, name) {
+    if (name in object) return name;
+    name = name.charAt(0).toUpperCase() + name.slice(1);
+    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
+      var prefixName = d3_vendorPrefixes[i] + name;
+      if (prefixName in object) return prefixName;
+    }
+  }
+  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
+  function d3_noop() {}
   d3.dispatch = function() {
     var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
     while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
@@ -366,8 +486,8 @@ d3 = function() {
   d3_dispatch.prototype.on = function(type, listener) {
     var i = type.indexOf("."), name = "";
     if (i >= 0) {
-      name = type.substring(i + 1);
-      type = type.substring(0, i);
+      name = type.slice(i + 1);
+      type = type.slice(0, i);
     }
     if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
     if (arguments.length === 2) {
@@ -400,8 +520,7 @@ d3 = function() {
     return event;
   }
   d3.event = null;
-  function d3_eventCancel() {
-    d3.event.stopPropagation();
+  function d3_eventPreventDefault() {
     d3.event.preventDefault();
   }
   function d3_eventSource() {
@@ -409,16 +528,6 @@ d3 = function() {
     while (s = e.sourceEvent) e = s;
     return e;
   }
-  function d3_eventSuppress(target, type) {
-    function off() {
-      target.on(type, null);
-    }
-    target.on(type, function() {
-      d3_eventCancel();
-      off();
-    }, true);
-    setTimeout(off, 0);
-  }
   function d3_eventDispatch(target) {
     var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
     while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
@@ -436,149 +545,50 @@ d3 = function() {
     };
     return dispatch;
   }
-  d3.mouse = function(container) {
-    return d3_mousePoint(container, d3_eventSource());
-  };
-  var d3_mouse_bug44083 = /WebKit/.test(d3_window.navigator.userAgent) ? -1 : 0;
-  function d3_mousePoint(container, e) {
-    var svg = container.ownerSVGElement || container;
-    if (svg.createSVGPoint) {
-      var point = svg.createSVGPoint();
-      if (d3_mouse_bug44083 < 0 && (d3_window.scrollX || d3_window.scrollY)) {
-        svg = d3.select(d3_document.body).append("svg").style("position", "absolute").style("top", 0).style("left", 0);
-        var ctm = svg[0][0].getScreenCTM();
-        d3_mouse_bug44083 = !(ctm.f || ctm.e);
-        svg.remove();
-      }
-      if (d3_mouse_bug44083) {
-        point.x = e.pageX;
-        point.y = e.pageY;
-      } else {
-        point.x = e.clientX;
-        point.y = e.clientY;
-      }
-      point = point.matrixTransform(container.getScreenCTM().inverse());
-      return [ point.x, point.y ];
-    }
-    var rect = container.getBoundingClientRect();
-    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
-  }
-  var d3_array = d3_arraySlice;
-  function d3_arrayCopy(pseudoarray) {
-    var i = -1, n = pseudoarray.length, array = [];
-    while (++i < n) array.push(pseudoarray[i]);
-    return array;
-  }
-  function d3_arraySlice(pseudoarray) {
-    return Array.prototype.slice.call(pseudoarray);
-  }
-  try {
-    d3_array(d3_document.documentElement.childNodes)[0].nodeType;
-  } catch (e) {
-    d3_array = d3_arrayCopy;
-  }
-  var d3_arraySubclass = [].__proto__ ? function(array, prototype) {
-    array.__proto__ = prototype;
-  } : function(array, prototype) {
-    for (var property in prototype) array[property] = prototype[property];
-  };
-  d3.touches = function(container, touches) {
-    if (arguments.length < 2) touches = d3_eventSource().touches;
-    return touches ? d3_array(touches).map(function(touch) {
-      var point = d3_mousePoint(container, touch);
-      point.identifier = touch.identifier;
-      return point;
-    }) : [];
+  d3.requote = function(s) {
+    return s.replace(d3_requote_re, "\\$&");
   };
-  d3.behavior.drag = function() {
-    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null;
-    function drag() {
-      this.on("mousedown.drag", mousedown).on("touchstart.drag", mousedown);
-    }
-    function mousedown() {
-      var target = this, event_ = event.of(target, arguments), eventTarget = d3.event.target, touchId = d3.event.touches ? d3.event.changedTouches[0].identifier : null, offset, origin_ = point(), moved = 0;
-      var w = d3.select(d3_window).on(touchId != null ? "touchmove.drag-" + touchId : "mousemove.drag", dragmove).on(touchId != null ? "touchend.drag-" + touchId : "mouseup.drag", dragend, true);
-      if (origin) {
-        offset = origin.apply(target, arguments);
-        offset = [ offset.x - origin_[0], offset.y - origin_[1] ];
-      } else {
-        offset = [ 0, 0 ];
-      }
-      if (touchId == null) d3_eventCancel();
-      event_({
-        type: "dragstart"
-      });
-      function point() {
-        var p = target.parentNode;
-        return touchId != null ? d3.touches(p).filter(function(p) {
-          return p.identifier === touchId;
-        })[0] : d3.mouse(p);
-      }
-      function dragmove() {
-        if (!target.parentNode) return dragend();
-        var p = point(), dx = p[0] - origin_[0], dy = p[1] - origin_[1];
-        moved |= dx | dy;
-        origin_ = p;
-        d3_eventCancel();
-        event_({
-          type: "drag",
-          x: p[0] + offset[0],
-          y: p[1] + offset[1],
-          dx: dx,
-          dy: dy
-        });
-      }
-      function dragend() {
-        event_({
-          type: "dragend"
-        });
-        if (moved) {
-          d3_eventCancel();
-          if (d3.event.target === eventTarget) d3_eventSuppress(w, "click");
-        }
-        w.on(touchId != null ? "touchmove.drag-" + touchId : "mousemove.drag", null).on(touchId != null ? "touchend.drag-" + touchId : "mouseup.drag", null);
-      }
-    }
-    drag.origin = function(x) {
-      if (!arguments.length) return origin;
-      origin = x;
-      return drag;
-    };
-    return d3.rebind(drag, event, "on");
+  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
+  var d3_subclass = {}.__proto__ ? function(object, prototype) {
+    object.__proto__ = prototype;
+  } : function(object, prototype) {
+    for (var property in prototype) object[property] = prototype[property];
   };
   function d3_selection(groups) {
-    d3_arraySubclass(groups, d3_selectionPrototype);
+    d3_subclass(groups, d3_selectionPrototype);
     return groups;
   }
   var d3_select = function(s, n) {
     return n.querySelector(s);
   }, d3_selectAll = function(s, n) {
     return n.querySelectorAll(s);
-  }, d3_selectRoot = d3_document.documentElement, d3_selectMatcher = d3_selectRoot.matchesSelector || d3_selectRoot.webkitMatchesSelector || d3_selectRoot.mozMatchesSelector || d3_selectRoot.msMatchesSelector || d3_selectRoot.oMatchesSelector, d3_selectMatches = function(n, s) {
-    return d3_selectMatcher.call(n, s);
+  }, d3_selectMatches = function(n, s) {
+    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
+    d3_selectMatches = function(n, s) {
+      return d3_selectMatcher.call(n, s);
+    };
+    return d3_selectMatches(n, s);
   };
   if (typeof Sizzle === "function") {
     d3_select = function(s, n) {
       return Sizzle(s, n)[0] || null;
     };
-    d3_selectAll = function(s, n) {
-      return Sizzle.uniqueSort(Sizzle(s, n));
-    };
+    d3_selectAll = Sizzle;
     d3_selectMatches = Sizzle.matchesSelector;
   }
   d3.selection = function() {
-    return d3_selectionRoot;
+    return d3.select(d3_document.documentElement);
   };
   var d3_selectionPrototype = d3.selection.prototype = [];
   d3_selectionPrototype.select = function(selector) {
     var subgroups = [], subgroup, subnode, group, node;
-    if (typeof selector !== "function") selector = d3_selection_selector(selector);
+    selector = d3_selection_selector(selector);
     for (var j = -1, m = this.length; ++j < m; ) {
       subgroups.push(subgroup = []);
       subgroup.parentNode = (group = this[j]).parentNode;
       for (var i = -1, n = group.length; ++i < n; ) {
         if (node = group[i]) {
-          subgroup.push(subnode = selector.call(node, node.__data__, i));
+          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
           if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
         } else {
           subgroup.push(null);
@@ -588,17 +598,17 @@ d3 = function() {
     return d3_selection(subgroups);
   };
   function d3_selection_selector(selector) {
-    return function() {
+    return typeof selector === "function" ? selector : function() {
       return d3_select(selector, this);
     };
   }
   d3_selectionPrototype.selectAll = function(selector) {
     var subgroups = [], subgroup, node;
-    if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
+    selector = d3_selection_selectorAll(selector);
     for (var j = -1, m = this.length; ++j < m; ) {
       for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
         if (node = group[i]) {
-          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i)));
+          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
           subgroup.parentNode = node;
         }
       }
@@ -606,13 +616,14 @@ d3 = function() {
     return d3_selection(subgroups);
   };
   function d3_selection_selectorAll(selector) {
-    return function() {
+    return typeof selector === "function" ? selector : function() {
       return d3_selectAll(selector, this);
     };
   }
+  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
   var d3_nsPrefix = {
     svg: "http://www.w3.org/2000/svg",
-    xhtml: "http://www.w3.org/1999/xhtml",
+    xhtml: d3_nsXhtml,
     xlink: "http://www.w3.org/1999/xlink",
     xml: "http://www.w3.org/XML/1998/namespace",
     xmlns: "http://www.w3.org/2000/xmlns/"
@@ -621,10 +632,7 @@ d3 = function() {
     prefix: d3_nsPrefix,
     qualify: function(name) {
       var i = name.indexOf(":"), prefix = name;
-      if (i >= 0) {
-        prefix = name.substring(0, i);
-        name = name.substring(i + 1);
-      }
+      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
       return d3_nsPrefix.hasOwnProperty(prefix) ? {
         space: d3_nsPrefix[prefix],
         local: name
@@ -670,14 +678,10 @@ d3 = function() {
   function d3_collapse(s) {
     return s.trim().replace(/\s+/g, " ");
   }
-  d3.requote = function(s) {
-    return s.replace(d3_requote_re, "\\$&");
-  };
-  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
   d3_selectionPrototype.classed = function(name, value) {
     if (arguments.length < 2) {
       if (typeof name === "string") {
-        var node = this.node(), n = (name = name.trim().split(/^|\s+/g)).length, i = -1;
+        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
         if (value = node.classList) {
           while (++i < n) if (!value.contains(name[i])) return false;
         } else {
@@ -694,8 +698,11 @@ d3 = function() {
   function d3_selection_classedRe(name) {
     return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
   }
+  function d3_selection_classes(name) {
+    return (name + "").trim().split(/^|\s+/);
+  }
   function d3_selection_classed(name, value) {
-    name = name.trim().split(/\s+/).map(d3_selection_classedName);
+    name = d3_selection_classes(name).map(d3_selection_classedName);
     var n = name.length;
     function classedConstant() {
       var i = -1;
@@ -728,7 +735,10 @@ d3 = function() {
         for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
         return this;
       }
-      if (n < 2) return d3_window.getComputedStyle(this.node(), null).getPropertyValue(name);
+      if (n < 2) {
+        var node = this.node();
+        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
+      }
       priority = "";
     }
     return this.each(d3_selection_style(name, value, priority));
@@ -788,32 +798,35 @@ d3 = function() {
     }) : this.node().innerHTML;
   };
   d3_selectionPrototype.append = function(name) {
-    name = d3.ns.qualify(name);
-    function append() {
-      return this.appendChild(d3_document.createElementNS(this.namespaceURI, name));
-    }
-    function appendNS() {
-      return this.appendChild(d3_document.createElementNS(name.space, name.local));
-    }
-    return this.select(name.local ? appendNS : append);
+    name = d3_selection_creator(name);
+    return this.select(function() {
+      return this.appendChild(name.apply(this, arguments));
+    });
   };
-  d3_selectionPrototype.insert = function(name, before) {
-    name = d3.ns.qualify(name);
-    if (typeof before !== "function") before = d3_selection_selector(before);
-    function insert(d, i) {
-      return this.insertBefore(d3_document.createElementNS(this.namespaceURI, name), before.call(this, d, i));
+  function d3_selection_creator(name) {
+    function create() {
+      var document = this.ownerDocument, namespace = this.namespaceURI;
+      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
     }
-    function insertNS(d, i) {
-      return this.insertBefore(d3_document.createElementNS(name.space, name.local), before.call(this, d, i));
+    function createNS() {
+      return this.ownerDocument.createElementNS(name.space, name.local);
     }
-    return this.select(name.local ? insertNS : insert);
+    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
+  }
+  d3_selectionPrototype.insert = function(name, before) {
+    name = d3_selection_creator(name);
+    before = d3_selection_selector(before);
+    return this.select(function() {
+      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
+    });
   };
   d3_selectionPrototype.remove = function() {
-    return this.each(function() {
-      var parent = this.parentNode;
-      if (parent) parent.removeChild(this);
-    });
+    return this.each(d3_selectionRemove);
   };
+  function d3_selectionRemove() {
+    var parent = this.parentNode;
+    if (parent) parent.removeChild(this);
+  }
   d3_selectionPrototype.data = function(value, key) {
     var i = -1, n = this.length, group, node;
     if (!arguments.length) {
@@ -828,29 +841,28 @@ d3 = function() {
     function bind(group, groupData) {
       var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
       if (key) {
-        var nodeByKeyValue = new d3_Map(), dataByKeyValue = new d3_Map(), keyValues = [], keyValue;
+        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
         for (i = -1; ++i < n; ) {
-          keyValue = key.call(node = group[i], node.__data__, i);
-          if (nodeByKeyValue.has(keyValue)) {
-            exitNodes[i] = node;
-          } else {
-            nodeByKeyValue.set(keyValue, node);
+          if (node = group[i]) {
+            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
+              exitNodes[i] = node;
+            } else {
+              nodeByKeyValue.set(keyValue, node);
+            }
+            keyValues[i] = keyValue;
           }
-          keyValues.push(keyValue);
         }
         for (i = -1; ++i < m; ) {
-          keyValue = key.call(groupData, nodeData = groupData[i], i);
-          if (node = nodeByKeyValue.get(keyValue)) {
+          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
+            enterNodes[i] = d3_selection_dataNode(nodeData);
+          } else if (node !== true) {
             updateNodes[i] = node;
             node.__data__ = nodeData;
-          } else if (!dataByKeyValue.has(keyValue)) {
-            enterNodes[i] = d3_selection_dataNode(nodeData);
           }
-          dataByKeyValue.set(keyValue, nodeData);
-          nodeByKeyValue.remove(keyValue);
+          nodeByKeyValue.set(keyValue, true);
         }
         for (i = -1; ++i < n; ) {
-          if (nodeByKeyValue.has(keyValues[i])) {
+          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
             exitNodes[i] = group[i];
           }
         }
@@ -911,7 +923,7 @@ d3 = function() {
       subgroups.push(subgroup = []);
       subgroup.parentNode = (group = this[j]).parentNode;
       for (var i = 0, n = group.length; i < n; i++) {
-        if ((node = group[i]) && filter.call(node, node.__data__, i)) {
+        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
           subgroup.push(node);
         }
       }
@@ -940,12 +952,113 @@ d3 = function() {
     return this.order();
   };
   function d3_selection_sortComparator(comparator) {
-    if (!arguments.length) comparator = d3.ascending;
+    if (!arguments.length) comparator = d3_ascending;
     return function(a, b) {
-      return !a - !b || comparator(a.__data__, b.__data__);
+      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
     };
   }
-  function d3_noop() {}
+  d3_selectionPrototype.each = function(callback) {
+    return d3_selection_each(this, function(node, i, j) {
+      callback.call(node, node.__data__, i, j);
+    });
+  };
+  function d3_selection_each(groups, callback) {
+    for (var j = 0, m = groups.length; j < m; j++) {
+      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
+        if (node = group[i]) callback(node, i, j);
+      }
+    }
+    return groups;
+  }
+  d3_selectionPrototype.call = function(callback) {
+    var args = d3_array(arguments);
+    callback.apply(args[0] = this, args);
+    return this;
+  };
+  d3_selectionPrototype.empty = function() {
+    return !this.node();
+  };
+  d3_selectionPrototype.node = function() {
+    for (var j = 0, m = this.length; j < m; j++) {
+      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
+        var node = group[i];
+        if (node) return node;
+      }
+    }
+    return null;
+  };
+  d3_selectionPrototype.size = function() {
+    var n = 0;
+    d3_selection_each(this, function() {
+      ++n;
+    });
+    return n;
+  };
+  function d3_selection_enter(selection) {
+    d3_subclass(selection, d3_selection_enterPrototype);
+    return selection;
+  }
+  var d3_selection_enterPrototype = [];
+  d3.selection.enter = d3_selection_enter;
+  d3.selection.enter.prototype = d3_selection_enterPrototype;
+  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
+  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
+  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
+  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
+  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
+  d3_selection_enterPrototype.select = function(selector) {
+    var subgroups = [], subgroup, subnode, upgroup, group, node;
+    for (var j = -1, m = this.length; ++j < m; ) {
+      upgroup = (group = this[j]).update;
+      subgroups.push(subgroup = []);
+      subgroup.parentNode = group.parentNode;
+      for (var i = -1, n = group.length; ++i < n; ) {
+        if (node = group[i]) {
+          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
+          subnode.__data__ = node.__data__;
+        } else {
+          subgroup.push(null);
+        }
+      }
+    }
+    return d3_selection(subgroups);
+  };
+  d3_selection_enterPrototype.insert = function(name, before) {
+    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
+    return d3_selectionPrototype.insert.call(this, name, before);
+  };
+  function d3_selection_enterInsertBefore(enter) {
+    var i0, j0;
+    return function(d, i, j) {
+      var group = enter[j].update, n = group.length, node;
+      if (j != j0) j0 = j, i0 = 0;
+      if (i >= i0) i0 = i + 1;
+      while (!(node = group[i0]) && ++i0 < n) ;
+      return node;
+    };
+  }
+  d3.select = function(node) {
+    var group;
+    if (typeof node === "string") {
+      group = [ d3_select(node, d3_document) ];
+      group.parentNode = d3_document.documentElement;
+    } else {
+      group = [ node ];
+      group.parentNode = d3_documentElement(node);
+    }
+    return d3_selection([ group ]);
+  };
+  d3.selectAll = function(nodes) {
+    var group;
+    if (typeof nodes === "string") {
+      group = d3_array(d3_selectAll(nodes, d3_document));
+      group.parentNode = d3_document.documentElement;
+    } else {
+      group = d3_array(nodes);
+      group.parentNode = null;
+    }
+    return d3_selection([ group ]);
+  };
   d3_selectionPrototype.on = function(type, listener, capture) {
     var n = arguments.length;
     if (n < 3) {
@@ -961,7 +1074,7 @@ d3 = function() {
   };
   function d3_selection_on(type, listener, capture) {
     var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
-    if (i > 0) type = type.substring(0, i);
+    if (i > 0) type = type.slice(0, i);
     var filter = d3_selection_onFilters.get(type);
     if (filter) type = filter, wrap = d3_selection_onFilter;
     function onRemove() {
@@ -993,9 +1106,11 @@ d3 = function() {
     mouseenter: "mouseover",
     mouseleave: "mouseout"
   });
-  d3_selection_onFilters.forEach(function(k) {
-    if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
-  });
+  if (d3_document) {
+    d3_selection_onFilters.forEach(function(k) {
+      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
+    });
+  }
   function d3_selection_onListener(listener, argumentz) {
     return function(e) {
       var o = d3.event;
@@ -1017,249 +1132,466 @@ d3 = function() {
       }
     };
   }
-  d3_selectionPrototype.each = function(callback) {
-    return d3_selection_each(this, function(node, i, j) {
-      callback.call(node, node.__data__, i, j);
-    });
-  };
-  function d3_selection_each(groups, callback) {
-    for (var j = 0, m = groups.length; j < m; j++) {
-      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
-        if (node = group[i]) callback(node, i, j);
-      }
+  var d3_event_dragSelect, d3_event_dragId = 0;
+  function d3_event_dragSuppress(node) {
+    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
+    if (d3_event_dragSelect == null) {
+      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
     }
-    return groups;
+    if (d3_event_dragSelect) {
+      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
+      style[d3_event_dragSelect] = "none";
+    }
+    return function(suppressClick) {
+      w.on(name, null);
+      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
+      if (suppressClick) {
+        var off = function() {
+          w.on(click, null);
+        };
+        w.on(click, function() {
+          d3_eventPreventDefault();
+          off();
+        }, true);
+        setTimeout(off, 0);
+      }
+    };
   }
-  d3_selectionPrototype.call = function(callback) {
-    var args = d3_array(arguments);
-    callback.apply(args[0] = this, args);
-    return this;
-  };
-  d3_selectionPrototype.empty = function() {
-    return !this.node();
+  d3.mouse = function(container) {
+    return d3_mousePoint(container, d3_eventSource());
   };
-  d3_selectionPrototype.node = function() {
-    for (var j = 0, m = this.length; j < m; j++) {
-      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
-        var node = group[i];
-        if (node) return node;
-      }
+  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
+  function d3_mousePoint(container, e) {
+    if (e.changedTouches) e = e.changedTouches[0];
+    var svg = container.ownerSVGElement || container;
+    if (svg.createSVGPoint) {
+      var point = svg.createSVGPoint();
+      if (d3_mouse_bug44083 < 0) {
+        var window = d3_window(container);
+        if (window.scrollX || window.scrollY) {
+          svg = d3.select("body").append("svg").style({
+            position: "absolute",
+            top: 0,
+            left: 0,
+            margin: 0,
+            padding: 0,
+            border: "none"
+          }, "important");
+          var ctm = svg[0][0].getScreenCTM();
+          d3_mouse_bug44083 = !(ctm.f || ctm.e);
+          svg.remove();
+        }
+      }
+      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
+      point.y = e.clientY;
+      point = point.matrixTransform(container.getScreenCTM().inverse());
+      return [ point.x, point.y ];
     }
-    return null;
-  };
-  function d3_selection_enter(selection) {
-    d3_arraySubclass(selection, d3_selection_enterPrototype);
-    return selection;
+    var rect = container.getBoundingClientRect();
+    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
   }
-  var d3_selection_enterPrototype = [];
-  d3.selection.enter = d3_selection_enter;
-  d3.selection.enter.prototype = d3_selection_enterPrototype;
-  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
-  d3_selection_enterPrototype.insert = d3_selectionPrototype.insert;
-  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
-  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
-  d3_selection_enterPrototype.select = function(selector) {
-    var subgroups = [], subgroup, subnode, upgroup, group, node;
-    for (var j = -1, m = this.length; ++j < m; ) {
-      upgroup = (group = this[j]).update;
-      subgroups.push(subgroup = []);
-      subgroup.parentNode = group.parentNode;
-      for (var i = -1, n = group.length; ++i < n; ) {
-        if (node = group[i]) {
-          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i));
-          subnode.__data__ = node.__data__;
-        } else {
-          subgroup.push(null);
-        }
+  d3.touch = function(container, touches, identifier) {
+    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
+    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
+      if ((touch = touches[i]).identifier === identifier) {
+        return d3_mousePoint(container, touch);
       }
     }
-    return d3_selection(subgroups);
   };
-  d3_selectionPrototype.transition = function() {
-    var id = d3_transitionInheritId || ++d3_transitionId, subgroups = [], subgroup, node, transition = Object.create(d3_transitionInherit);
-    transition.time = Date.now();
-    for (var j = -1, m = this.length; ++j < m; ) {
-      subgroups.push(subgroup = []);
-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
-        if (node = group[i]) d3_transitionNode(node, i, id, transition);
-        subgroup.push(node);
-      }
+  d3.behavior.drag = function() {
+    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
+    function drag() {
+      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
     }
-    return d3_transition(subgroups, id);
+    function dragstart(id, position, subject, move, end) {
+      return function() {
+        var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
+        if (origin) {
+          dragOffset = origin.apply(that, arguments);
+          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
+        } else {
+          dragOffset = [ 0, 0 ];
+        }
+        dispatch({
+          type: "dragstart"
+        });
+        function moved() {
+          var position1 = position(parent, dragId), dx, dy;
+          if (!position1) return;
+          dx = position1[0] - position0[0];
+          dy = position1[1] - position0[1];
+          dragged |= dx | dy;
+          position0 = position1;
+          dispatch({
+            type: "drag",
+            x: position1[0] + dragOffset[0],
+            y: position1[1] + dragOffset[1],
+            dx: dx,
+            dy: dy
+          });
+        }
+        function ended() {
+          if (!position(parent, dragId)) return;
+          dragSubject.on(move + dragName, null).on(end + dragName, null);
+          dragRestore(dragged);
+          dispatch({
+            type: "dragend"
+          });
+        }
+      };
+    }
+    drag.origin = function(x) {
+      if (!arguments.length) return origin;
+      origin = x;
+      return drag;
+    };
+    return d3.rebind(drag, event, "on");
   };
-  d3.select = function(node) {
-    var group = [ typeof node === "string" ? d3_select(node, d3_document) : node ];
-    group.parentNode = d3_selectRoot;
-    return d3_selection([ group ]);
+  function d3_behavior_dragTouchId() {
+    return d3.event.changedTouches[0].identifier;
+  }
+  d3.touches = function(container, touches) {
+    if (arguments.length < 2) touches = d3_eventSource().touches;
+    return touches ? d3_array(touches).map(function(touch) {
+      var point = d3_mousePoint(container, touch);
+      point.identifier = touch.identifier;
+      return point;
+    }) : [];
   };
-  d3.selectAll = function(nodes) {
-    var group = d3_array(typeof nodes === "string" ? d3_selectAll(nodes, d3_document) : nodes);
-    group.parentNode = d3_selectRoot;
-    return d3_selection([ group ]);
+  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
+  function d3_sgn(x) {
+    return x > 0 ? 1 : x < 0 ? -1 : 0;
+  }
+  function d3_cross2d(a, b, c) {
+    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
+  }
+  function d3_acos(x) {
+    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
+  }
+  function d3_asin(x) {
+    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
+  }
+  function d3_sinh(x) {
+    return ((x = Math.exp(x)) - 1 / x) / 2;
+  }
+  function d3_cosh(x) {
+    return ((x = Math.exp(x)) + 1 / x) / 2;
+  }
+  function d3_tanh(x) {
+    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
+  }
+  function d3_haversin(x) {
+    return (x = Math.sin(x / 2)) * x;
+  }
+  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
+  d3.interpolateZoom = function(p0, p1) {
+    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
+    if (d2 < ε2) {
+      S = Math.log(w1 / w0) / ρ;
+      i = function(t) {
+        return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
+      };
+    } else {
+      var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
+      S = (r1 - r0) / ρ;
+      i = function(t) {
+        var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
+        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
+      };
+    }
+    i.duration = S * 1e3;
+    return i;
   };
-  var d3_selectionRoot = d3.select(d3_selectRoot);
   d3.behavior.zoom = function() {
-    var translate = [ 0, 0 ], translate0, scale = 1, scale0, scaleExtent = d3_behavior_zoomInfinity, event = d3_eventDispatch(zoom, "zoom"), x0, x1, y0, y1, touchtime;
-    function zoom() {
-      this.on("mousedown.zoom", mousedown).on("mousemove.zoom", mousemove).on(d3_behavior_zoomWheel + ".zoom", mousewheel).on("dblclick.zoom", dblclick).on("touchstart.zoom", touchstart).on("touchmove.zoom", touchmove).on("touchend.zoom", touchstart);
-    }
-    zoom.translate = function(x) {
-      if (!arguments.length) return translate;
-      translate = x.map(Number);
+    var view = {
+      x: 0,
+      y: 0,
+      k: 1
+    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
+    if (!d3_behavior_zoomWheel) {
+      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
+        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
+      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
+        return d3.event.wheelDelta;
+      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
+        return -d3.event.detail;
+      }, "MozMousePixelScroll");
+    }
+    function zoom(g) {
+      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
+    }
+    zoom.event = function(g) {
+      g.each(function() {
+        var dispatch = event.of(this, arguments), view1 = view;
+        if (d3_transitionInheritId) {
+          d3.select(this).transition().each("start.zoom", function() {
+            view = this.__chart__ || {
+              x: 0,
+              y: 0,
+              k: 1
+            };
+            zoomstarted(dispatch);
+          }).tween("zoom:zoom", function() {
+            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
+            return function(t) {
+              var l = i(t), k = dx / l[2];
+              this.__chart__ = view = {
+                x: cx - l[0] * k,
+                y: cy - l[1] * k,
+                k: k
+              };
+              zoomed(dispatch);
+            };
+          }).each("interrupt.zoom", function() {
+            zoomended(dispatch);
+          }).each("end.zoom", function() {
+            zoomended(dispatch);
+          });
+        } else {
+          this.__chart__ = view;
+          zoomstarted(dispatch);
+          zoomed(dispatch);
+          zoomended(dispatch);
+        }
+      });
+    };
+    zoom.translate = function(_) {
+      if (!arguments.length) return [ view.x, view.y ];
+      view = {
+        x: +_[0],
+        y: +_[1],
+        k: view.k
+      };
       rescale();
       return zoom;
     };
-    zoom.scale = function(x) {
-      if (!arguments.length) return scale;
-      scale = +x;
+    zoom.scale = function(_) {
+      if (!arguments.length) return view.k;
+      view = {
+        x: view.x,
+        y: view.y,
+        k: null
+      };
+      scaleTo(+_);
       rescale();
       return zoom;
     };
-    zoom.scaleExtent = function(x) {
+    zoom.scaleExtent = function(_) {
       if (!arguments.length) return scaleExtent;
-      scaleExtent = x == null ? d3_behavior_zoomInfinity : x.map(Number);
+      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
+      return zoom;
+    };
+    zoom.center = function(_) {
+      if (!arguments.length) return center;
+      center = _ && [ +_[0], +_[1] ];
+      return zoom;
+    };
+    zoom.size = function(_) {
+      if (!arguments.length) return size;
+      size = _ && [ +_[0], +_[1] ];
+      return zoom;
+    };
+    zoom.duration = function(_) {
+      if (!arguments.length) return duration;
+      duration = +_;
       return zoom;
     };
     zoom.x = function(z) {
       if (!arguments.length) return x1;
       x1 = z;
       x0 = z.copy();
-      translate = [ 0, 0 ];
-      scale = 1;
+      view = {
+        x: 0,
+        y: 0,
+        k: 1
+      };
       return zoom;
     };
     zoom.y = function(z) {
       if (!arguments.length) return y1;
       y1 = z;
       y0 = z.copy();
-      translate = [ 0, 0 ];
-      scale = 1;
+      view = {
+        x: 0,
+        y: 0,
+        k: 1
+      };
       return zoom;
     };
     function location(p) {
-      return [ (p[0] - translate[0]) / scale, (p[1] - translate[1]) / scale ];
+      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
     }
     function point(l) {
-      return [ l[0] * scale + translate[0], l[1] * scale + translate[1] ];
+      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
     }
     function scaleTo(s) {
-      scale = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
+      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
     }
     function translateTo(p, l) {
       l = point(l);
-      translate[0] += p[0] - l[0];
-      translate[1] += p[1] - l[1];
+      view.x += p[0] - l[0];
+      view.y += p[1] - l[1];
+    }
+    function zoomTo(that, p, l, k) {
+      that.__chart__ = {
+        x: view.x,
+        y: view.y,
+        k: view.k
+      };
+      scaleTo(Math.pow(2, k));
+      translateTo(center0 = p, l);
+      that = d3.select(that);
+      if (duration > 0) that = that.transition().duration(duration);
+      that.call(zoom.event);
     }
     function rescale() {
       if (x1) x1.domain(x0.range().map(function(x) {
-        return (x - translate[0]) / scale;
+        return (x - view.x) / view.k;
       }).map(x0.invert));
       if (y1) y1.domain(y0.range().map(function(y) {
-        return (y - translate[1]) / scale;
+        return (y - view.y) / view.k;
       }).map(y0.invert));
     }
-    function dispatch(event) {
+    function zoomstarted(dispatch) {
+      if (!zooming++) dispatch({
+        type: "zoomstart"
+      });
+    }
+    function zoomed(dispatch) {
       rescale();
-      d3.event.preventDefault();
-      event({
+      dispatch({
         type: "zoom",
-        scale: scale,
-        translate: translate
+        scale: view.k,
+        translate: [ view.x, view.y ]
       });
     }
-    function mousedown() {
-      var target = this, event_ = event.of(target, arguments), eventTarget = d3.event.target, moved = 0, w = d3.select(d3_window).on("mousemove.zoom", mousemove).on("mouseup.zoom", mouseup), l = location(d3.mouse(target));
-      d3_window.focus();
-      d3_eventCancel();
-      function mousemove() {
-        moved = 1;
-        translateTo(d3.mouse(target), l);
-        dispatch(event_);
-      }
-      function mouseup() {
-        if (moved) d3_eventCancel();
-        w.on("mousemove.zoom", null).on("mouseup.zoom", null);
-        if (moved && d3.event.target === eventTarget) d3_eventSuppress(w, "click.zoom");
-      }
-    }
-    function mousewheel() {
-      if (!translate0) translate0 = location(d3.mouse(this));
-      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * scale);
-      translateTo(d3.mouse(this), translate0);
-      dispatch(event.of(this, arguments));
-    }
-    function mousemove() {
-      translate0 = null;
-    }
-    function dblclick() {
-      var p = d3.mouse(this), l = location(p), k = Math.log(scale) / Math.LN2;
-      scaleTo(Math.pow(2, d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1));
-      translateTo(p, l);
-      dispatch(event.of(this, arguments));
-    }
-    function touchstart() {
-      var touches = d3.touches(this), now = Date.now();
-      scale0 = scale;
-      translate0 = {};
-      touches.forEach(function(t) {
-        translate0[t.identifier] = location(t);
-      });
-      d3_eventCancel();
-      if (touches.length === 1) {
-        if (now - touchtime < 500) {
-          var p = touches[0], l = location(touches[0]);
-          scaleTo(scale * 2);
-          translateTo(p, l);
-          dispatch(event.of(this, arguments));
+    function zoomended(dispatch) {
+      if (!--zooming) dispatch({
+        type: "zoomend"
+      }), center0 = null;
+    }
+    function mousedowned() {
+      var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
+      d3_selection_interrupt.call(that);
+      zoomstarted(dispatch);
+      function moved() {
+        dragged = 1;
+        translateTo(d3.mouse(that), location0);
+        zoomed(dispatch);
+      }
+      function ended() {
+        subject.on(mousemove, null).on(mouseup, null);
+        dragRestore(dragged);
+        zoomended(dispatch);
+      }
+    }
+    function touchstarted() {
+      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
+      started();
+      zoomstarted(dispatch);
+      subject.on(mousedown, null).on(touchstart, started);
+      function relocate() {
+        var touches = d3.touches(that);
+        scale0 = view.k;
+        touches.forEach(function(t) {
+          if (t.identifier in locations0) locations0[t.identifier] = location(t);
+        });
+        return touches;
+      }
+      function started() {
+        var target = d3.event.target;
+        d3.select(target).on(touchmove, moved).on(touchend, ended);
+        targets.push(target);
+        var changed = d3.event.changedTouches;
+        for (var i = 0, n = changed.length; i < n; ++i) {
+          locations0[changed[i].identifier] = null;
+        }
+        var touches = relocate(), now = Date.now();
+        if (touches.length === 1) {
+          if (now - touchtime < 500) {
+            var p = touches[0];
+            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
+            d3_eventPreventDefault();
+          }
+          touchtime = now;
+        } else if (touches.length > 1) {
+          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
+          distance0 = dx * dx + dy * dy;
+        }
+      }
+      function moved() {
+        var touches = d3.touches(that), p0, l0, p1, l1;
+        d3_selection_interrupt.call(that);
+        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
+          p1 = touches[i];
+          if (l1 = locations0[p1.identifier]) {
+            if (l0) break;
+            p0 = p1, l0 = l1;
+          }
         }
-        touchtime = now;
-      }
-    }
-    function touchmove() {
-      var touches = d3.touches(this), p0 = touches[0], l0 = translate0[p0.identifier];
-      if (p1 = touches[1]) {
-        var p1, l1 = translate0[p1.identifier];
-        p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
-        l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
-        scaleTo(d3.event.scale * scale0);
-      }
-      translateTo(p0, l0);
-      touchtime = null;
-      dispatch(event.of(this, arguments));
+        if (l1) {
+          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
+          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
+          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
+          scaleTo(scale1 * scale0);
+        }
+        touchtime = null;
+        translateTo(p0, l0);
+        zoomed(dispatch);
+      }
+      function ended() {
+        if (d3.event.touches.length) {
+          var changed = d3.event.changedTouches;
+          for (var i = 0, n = changed.length; i < n; ++i) {
+            delete locations0[changed[i].identifier];
+          }
+          for (var identifier in locations0) {
+            return void relocate();
+          }
+        }
+        d3.selectAll(targets).on(zoomName, null);
+        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
+        dragRestore();
+        zoomended(dispatch);
+      }
+    }
+    function mousewheeled() {
+      var dispatch = event.of(this, arguments);
+      if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this), 
+      translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
+      mousewheelTimer = setTimeout(function() {
+        mousewheelTimer = null;
+        zoomended(dispatch);
+      }, 50);
+      d3_eventPreventDefault();
+      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
+      translateTo(center0, translate0);
+      zoomed(dispatch);
+    }
+    function dblclicked() {
+      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
+      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
     }
     return d3.rebind(zoom, event, "on");
   };
-  var d3_behavior_zoomInfinity = [ 0, Infinity ];
-  var d3_behavior_zoomDelta, d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
-    return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
-  }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
-    return d3.event.wheelDelta;
-  }, "mousewheel") : (d3_behavior_zoomDelta = function() {
-    return -d3.event.detail;
-  }, "MozMousePixelScroll");
-  function d3_Color() {}
-  d3_Color.prototype.toString = function() {
+  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
+  d3.color = d3_color;
+  function d3_color() {}
+  d3_color.prototype.toString = function() {
     return this.rgb() + "";
   };
-  d3.hsl = function(h, s, l) {
-    return arguments.length === 1 ? h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : d3_hsl(+h, +s, +l);
-  };
+  d3.hsl = d3_hsl;
   function d3_hsl(h, s, l) {
-    return new d3_Hsl(h, s, l);
-  }
-  function d3_Hsl(h, s, l) {
-    this.h = h;
-    this.s = s;
-    this.l = l;
+    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
   }
-  var d3_hslPrototype = d3_Hsl.prototype = new d3_Color();
+  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
   d3_hslPrototype.brighter = function(k) {
     k = Math.pow(.7, arguments.length ? k : 1);
-    return d3_hsl(this.h, this.s, this.l / k);
+    return new d3_hsl(this.h, this.s, this.l / k);
   };
   d3_hslPrototype.darker = function(k) {
     k = Math.pow(.7, arguments.length ? k : 1);
-    return d3_hsl(this.h, this.s, k * this.l);
+    return new d3_hsl(this.h, this.s, k * this.l);
   };
   d3_hslPrototype.rgb = function() {
     return d3_hsl_rgb(this.h, this.s, this.l);
@@ -1281,44 +1613,18 @@ d3 = function() {
     function vv(h) {
       return Math.round(v(h) * 255);
     }
-    return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
+    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
   }
-  var π = Math.PI, ε = 1e-6, d3_radians = π / 180, d3_degrees = 180 / π;
-  function d3_sgn(x) {
-    return x > 0 ? 1 : x < 0 ? -1 : 0;
-  }
-  function d3_acos(x) {
-    return Math.acos(Math.max(-1, Math.min(1, x)));
-  }
-  function d3_asin(x) {
-    return x > 1 ? π / 2 : x < -1 ? -π / 2 : Math.asin(x);
-  }
-  function d3_sinh(x) {
-    return (Math.exp(x) - Math.exp(-x)) / 2;
-  }
-  function d3_cosh(x) {
-    return (Math.exp(x) + Math.exp(-x)) / 2;
-  }
-  function d3_haversin(x) {
-    return (x = Math.sin(x / 2)) * x;
-  }
-  d3.hcl = function(h, c, l) {
-    return arguments.length === 1 ? h instanceof d3_Hcl ? d3_hcl(h.h, h.c, h.l) : h instanceof d3_Lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : d3_hcl(+h, +c, +l);
-  };
+  d3.hcl = d3_hcl;
   function d3_hcl(h, c, l) {
-    return new d3_Hcl(h, c, l);
+    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
   }
-  function d3_Hcl(h, c, l) {
-    this.h = h;
-    this.c = c;
-    this.l = l;
-  }
-  var d3_hclPrototype = d3_Hcl.prototype = new d3_Color();
+  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
   d3_hclPrototype.brighter = function(k) {
-    return d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
+    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
   };
   d3_hclPrototype.darker = function(k) {
-    return d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
+    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
   };
   d3_hclPrototype.rgb = function() {
     return d3_hcl_lab(this.h, this.c, this.l).rgb();
@@ -1326,27 +1632,20 @@ d3 = function() {
   function d3_hcl_lab(h, c, l) {
     if (isNaN(h)) h = 0;
     if (isNaN(c)) c = 0;
-    return d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
+    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
   }
-  d3.lab = function(l, a, b) {
-    return arguments.length === 1 ? l instanceof d3_Lab ? d3_lab(l.l, l.a, l.b) : l instanceof d3_Hcl ? d3_hcl_lab(l.l, l.c, l.h) : d3_rgb_lab((l = d3.rgb(l)).r, l.g, l.b) : d3_lab(+l, +a, +b);
-  };
+  d3.lab = d3_lab;
   function d3_lab(l, a, b) {
-    return new d3_Lab(l, a, b);
-  }
-  function d3_Lab(l, a, b) {
-    this.l = l;
-    this.a = a;
-    this.b = b;
+    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
   }
   var d3_lab_K = 18;
   var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
-  var d3_labPrototype = d3_Lab.prototype = new d3_Color();
+  var d3_labPrototype = d3_lab.prototype = new d3_color();
   d3_labPrototype.brighter = function(k) {
-    return d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
+    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
   };
   d3_labPrototype.darker = function(k) {
-    return d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
+    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
   };
   d3_labPrototype.rgb = function() {
     return d3_lab_rgb(this.l, this.a, this.b);
@@ -1356,10 +1655,10 @@ d3 = function() {
     x = d3_lab_xyz(x) * d3_lab_X;
     y = d3_lab_xyz(y) * d3_lab_Y;
     z = d3_lab_xyz(z) * d3_lab_Z;
-    return d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
+    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
   }
   function d3_lab_hcl(l, a, b) {
-    return l > 0 ? d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : d3_hcl(NaN, NaN, l);
+    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
   }
   function d3_lab_xyz(x) {
     return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
@@ -1370,30 +1669,29 @@ d3 = function() {
   function d3_xyz_rgb(r) {
     return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
   }
-  d3.rgb = function(r, g, b) {
-    return arguments.length === 1 ? r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : d3_rgb(~~r, ~~g, ~~b);
-  };
+  d3.rgb = d3_rgb;
   function d3_rgb(r, g, b) {
-    return new d3_Rgb(r, g, b);
+    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
+  }
+  function d3_rgbNumber(value) {
+    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
   }
-  function d3_Rgb(r, g, b) {
-    this.r = r;
-    this.g = g;
-    this.b = b;
+  function d3_rgbString(value) {
+    return d3_rgbNumber(value) + "";
   }
-  var d3_rgbPrototype = d3_Rgb.prototype = new d3_Color();
+  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
   d3_rgbPrototype.brighter = function(k) {
     k = Math.pow(.7, arguments.length ? k : 1);
     var r = this.r, g = this.g, b = this.b, i = 30;
-    if (!r && !g && !b) return d3_rgb(i, i, i);
+    if (!r && !g && !b) return new d3_rgb(i, i, i);
     if (r && r < i) r = i;
     if (g && g < i) g = i;
     if (b && b < i) b = i;
-    return d3_rgb(Math.min(255, Math.floor(r / k)), Math.min(255, Math.floor(g / k)), Math.min(255, Math.floor(b / k)));
+    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
   };
   d3_rgbPrototype.darker = function(k) {
     k = Math.pow(.7, arguments.length ? k : 1);
-    return d3_rgb(Math.floor(k * this.r), Math.floor(k * this.g), Math.floor(k * this.b));
+    return new d3_rgb(k * this.r, k * this.g, k * this.b);
   };
   d3_rgbPrototype.hsl = function() {
     return d3_rgb_hsl(this.r, this.g, this.b);
@@ -1405,8 +1703,8 @@ d3 = function() {
     return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
   }
   function d3_rgb_parse(format, rgb, hsl) {
-    var r = 0, g = 0, b = 0, m1, m2, name;
-    m1 = /([a-z]+)\((.*)\)/i.exec(format);
+    var r = 0, g = 0, b = 0, m1, m2, color;
+    m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
     if (m1) {
       m2 = m1[2].split(",");
       switch (m1[1]) {
@@ -1421,23 +1719,22 @@ d3 = function() {
         }
       }
     }
-    if (name = d3_rgb_names.get(format)) return rgb(name.r, name.g, name.b);
-    if (format != null && format.charAt(0) === "#") {
+    if (color = d3_rgb_names.get(format)) {
+      return rgb(color.r, color.g, color.b);
+    }
+    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
       if (format.length === 4) {
-        r = format.charAt(1);
-        r += r;
-        g = format.charAt(2);
-        g += g;
-        b = format.charAt(3);
-        b += b;
+        r = (color & 3840) >> 4;
+        r = r >> 4 | r;
+        g = color & 240;
+        g = g >> 4 | g;
+        b = color & 15;
+        b = b << 4 | b;
       } else if (format.length === 7) {
-        r = format.substring(1, 3);
-        g = format.substring(3, 5);
-        b = format.substring(5, 7);
+        r = (color & 16711680) >> 16;
+        g = (color & 65280) >> 8;
+        b = color & 255;
       }
-      r = parseInt(r, 16);
-      g = parseInt(g, 16);
-      b = parseInt(b, 16);
     }
     return rgb(r, g, b);
   }
@@ -1451,7 +1748,7 @@ d3 = function() {
       h = NaN;
       s = l > 0 && l < 1 ? 0 : h;
     }
-    return d3_hsl(h, s, l);
+    return new d3_hsl(h, s, l);
   }
   function d3_rgb_lab(r, g, b) {
     r = d3_rgb_xyz(r);
@@ -1468,156 +1765,157 @@ d3 = function() {
     return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
   }
   var d3_rgb_names = d3.map({
-    aliceblue: "#f0f8ff",
-    antiquewhite: "#faebd7",
-    aqua: "#00ffff",
-    aquamarine: "#7fffd4",
-    azure: "#f0ffff",
-    beige: "#f5f5dc",
-    bisque: "#ffe4c4",
-    black: "#000000",
-    blanchedalmond: "#ffebcd",
-    blue: "#0000ff",
-    blueviolet: "#8a2be2",
-    brown: "#a52a2a",
-    burlywood: "#deb887",
-    cadetblue: "#5f9ea0",
-    chartreuse: "#7fff00",
-    chocolate: "#d2691e",
-    coral: "#ff7f50",
-    cornflowerblue: "#6495ed",
-    cornsilk: "#fff8dc",
-    crimson: "#dc143c",
-    cyan: "#00ffff",
-    darkblue: "#00008b",
-    darkcyan: "#008b8b",
-    darkgoldenrod: "#b8860b",
-    darkgray: "#a9a9a9",
-    darkgreen: "#006400",
-    darkgrey: "#a9a9a9",
-    darkkhaki: "#bdb76b",
-    darkmagenta: "#8b008b",
-    darkolivegreen: "#556b2f",
-    darkorange: "#ff8c00",
-    darkorchid: "#9932cc",
-    darkred: "#8b0000",
-    darksalmon: "#e9967a",
-    darkseagreen: "#8fbc8f",
-    darkslateblue: "#483d8b",
-    darkslategray: "#2f4f4f",
-    darkslategrey: "#2f4f4f",
-    darkturquoise: "#00ced1",
-    darkviolet: "#9400d3",
-    deeppink: "#ff1493",
-    deepskyblue: "#00bfff",
-    dimgray: "#696969",
-    dimgrey: "#696969",
-    dodgerblue: "#1e90ff",
-    firebrick: "#b22222",
-    floralwhite: "#fffaf0",
-    forestgreen: "#228b22",
-    fuchsia: "#ff00ff",
-    gainsboro: "#dcdcdc",
-    ghostwhite: "#f8f8ff",
-    gold: "#ffd700",
-    goldenrod: "#daa520",
-    gray: "#808080",
-    green: "#008000",
-    greenyellow: "#adff2f",
-    grey: "#808080",
-    honeydew: "#f0fff0",
-    hotpink: "#ff69b4",
-    indianred: "#cd5c5c",
-    indigo: "#4b0082",
-    ivory: "#fffff0",
-    khaki: "#f0e68c",
-    lavender: "#e6e6fa",
-    lavenderblush: "#fff0f5",
-    lawngreen: "#7cfc00",
-    lemonchiffon: "#fffacd",
-    lightblue: "#add8e6",
-    lightcoral: "#f08080",
-    lightcyan: "#e0ffff",
-    lightgoldenrodyellow: "#fafad2",
-    lightgray: "#d3d3d3",
-    lightgreen: "#90ee90",
-    lightgrey: "#d3d3d3",
-    lightpink: "#ffb6c1",
-    lightsalmon: "#ffa07a",
-    lightseagreen: "#20b2aa",
-    lightskyblue: "#87cefa",
-    lightslategray: "#778899",
-    lightslategrey: "#778899",
-    lightsteelblue: "#b0c4de",
-    lightyellow: "#ffffe0",
-    lime: "#00ff00",
-    limegreen: "#32cd32",
-    linen: "#faf0e6",
-    magenta: "#ff00ff",
-    maroon: "#800000",
-    mediumaquamarine: "#66cdaa",
-    mediumblue: "#0000cd",
-    mediumorchid: "#ba55d3",
-    mediumpurple: "#9370db",
-    mediumseagreen: "#3cb371",
-    mediumslateblue: "#7b68ee",
-    mediumspringgreen: "#00fa9a",
-    mediumturquoise: "#48d1cc",
-    mediumvioletred: "#c71585",
-    midnightblue: "#191970",
-    mintcream: "#f5fffa",
-    mistyrose: "#ffe4e1",
-    moccasin: "#ffe4b5",
-    navajowhite: "#ffdead",
-    navy: "#000080",
-    oldlace: "#fdf5e6",
-    olive: "#808000",
-    olivedrab: "#6b8e23",
-    orange: "#ffa500",
-    orangered: "#ff4500",
-    orchid: "#da70d6",
-    palegoldenrod: "#eee8aa",
-    palegreen: "#98fb98",
-    paleturquoise: "#afeeee",
-    palevioletred: "#db7093",
-    papayawhip: "#ffefd5",
-    peachpuff: "#ffdab9",
-    peru: "#cd853f",
-    pink: "#ffc0cb",
-    plum: "#dda0dd",
-    powderblue: "#b0e0e6",
-    purple: "#800080",
-    red: "#ff0000",
-    rosybrown: "#bc8f8f",
-    royalblue: "#4169e1",
-    saddlebrown: "#8b4513",
-    salmon: "#fa8072",
-    sandybrown: "#f4a460",
-    seagreen: "#2e8b57",
-    seashell: "#fff5ee",
-    sienna: "#a0522d",
-    silver: "#c0c0c0",
-    skyblue: "#87ceeb",
-    slateblue: "#6a5acd",
-    slategray: "#708090",
-    slategrey: "#708090",
-    snow: "#fffafa",
-    springgreen: "#00ff7f",
-    steelblue: "#4682b4",
-    tan: "#d2b48c",
-    teal: "#008080",
-    thistle: "#d8bfd8",
-    tomato: "#ff6347",
-    turquoise: "#40e0d0",
-    violet: "#ee82ee",
-    wheat: "#f5deb3",
-    white: "#ffffff",
-    whitesmoke: "#f5f5f5",
-    yellow: "#ffff00",
-    yellowgreen: "#9acd32"
+    aliceblue: 15792383,
+    antiquewhite: 16444375,
+    aqua: 65535,
+    aquamarine: 8388564,
+    azure: 15794175,
+    beige: 16119260,
+    bisque: 16770244,
+    black: 0,
+    blanchedalmond: 16772045,
+    blue: 255,
+    blueviolet: 9055202,
+    brown: 10824234,
+    burlywood: 14596231,
+    cadetblue: 6266528,
+    chartreuse: 8388352,
+    chocolate: 13789470,
+    coral: 16744272,
+    cornflowerblue: 6591981,
+    cornsilk: 16775388,
+    crimson: 14423100,
+    cyan: 65535,
+    darkblue: 139,
+    darkcyan: 35723,
+    darkgoldenrod: 12092939,
+    darkgray: 11119017,
+    darkgreen: 25600,
+    darkgrey: 11119017,
+    darkkhaki: 12433259,
+    darkmagenta: 9109643,
+    darkolivegreen: 5597999,
+    darkorange: 16747520,
+    darkorchid: 10040012,
+    darkred: 9109504,
+    darksalmon: 15308410,
+    darkseagreen: 9419919,
+    darkslateblue: 4734347,
+    darkslategray: 3100495,
+    darkslategrey: 3100495,
+    darkturquoise: 52945,
+    darkviolet: 9699539,
+    deeppink: 16716947,
+    deepskyblue: 49151,
+    dimgray: 6908265,
+    dimgrey: 6908265,
+    dodgerblue: 2003199,
+    firebrick: 11674146,
+    floralwhite: 16775920,
+    forestgreen: 2263842,
+    fuchsia: 16711935,
+    gainsboro: 14474460,
+    ghostwhite: 16316671,
+    gold: 16766720,
+    goldenrod: 14329120,
+    gray: 8421504,
+    green: 32768,
+    greenyellow: 11403055,
+    grey: 8421504,
+    honeydew: 15794160,
+    hotpink: 16738740,
+    indianred: 13458524,
+    indigo: 4915330,
+    ivory: 16777200,
+    khaki: 15787660,
+    lavender: 15132410,
+    lavenderblush: 16773365,
+    lawngreen: 8190976,
+    lemonchiffon: 16775885,
+    lightblue: 11393254,
+    lightcoral: 15761536,
+    lightcyan: 14745599,
+    lightgoldenrodyellow: 16448210,
+    lightgray: 13882323,
+    lightgreen: 9498256,
+    lightgrey: 13882323,
+    lightpink: 16758465,
+    lightsalmon: 16752762,
+    lightseagreen: 2142890,
+    lightskyblue: 8900346,
+    lightslategray: 7833753,
+    lightslategrey: 7833753,
+    lightsteelblue: 11584734,
+    lightyellow: 16777184,
+    lime: 65280,
+    limegreen: 3329330,
+    linen: 16445670,
+    magenta: 16711935,
+    maroon: 8388608,
+    mediumaquamarine: 6737322,
+    mediumblue: 205,
+    mediumorchid: 12211667,
+    mediumpurple: 9662683,
+    mediumseagreen: 3978097,
+    mediumslateblue: 8087790,
+    mediumspringgreen: 64154,
+    mediumturquoise: 4772300,
+    mediumvioletred: 13047173,
+    midnightblue: 1644912,
+    mintcream: 16121850,
+    mistyrose: 16770273,
+    moccasin: 16770229,
+    navajowhite: 16768685,
+    navy: 128,
+    oldlace: 16643558,
+    olive: 8421376,
+    olivedrab: 7048739,
+    orange: 16753920,
+    orangered: 16729344,
+    orchid: 14315734,
+    palegoldenrod: 15657130,
+    palegreen: 10025880,
+    paleturquoise: 11529966,
+    palevioletred: 14381203,
+    papayawhip: 16773077,
+    peachpuff: 16767673,
+    peru: 13468991,
+    pink: 16761035,
+    plum: 14524637,
+    powderblue: 11591910,
+    purple: 8388736,
+    rebeccapurple: 6697881,
+    red: 16711680,
+    rosybrown: 12357519,
+    royalblue: 4286945,
+    saddlebrown: 9127187,
+    salmon: 16416882,
+    sandybrown: 16032864,
+    seagreen: 3050327,
+    seashell: 16774638,
+    sienna: 10506797,
+    silver: 12632256,
+    skyblue: 8900331,
+    slateblue: 6970061,
+    slategray: 7372944,
+    slategrey: 7372944,
+    snow: 16775930,
+    springgreen: 65407,
+    steelblue: 4620980,
+    tan: 13808780,
+    teal: 32896,
+    thistle: 14204888,
+    tomato: 16737095,
+    turquoise: 4251856,
+    violet: 15631086,
+    wheat: 16113331,
+    white: 16777215,
+    whitesmoke: 16119285,
+    yellow: 16776960,
+    yellowgreen: 10145074
   });
   d3_rgb_names.forEach(function(key, value) {
-    d3_rgb_names.set(key, d3_rgb_parse(value, d3_rgb, d3_hsl_rgb));
+    d3_rgb_names.set(key, d3_rgbNumber(value));
   });
   function d3_functor(v) {
     return typeof v === "function" ? v : function() {
@@ -1625,17 +1923,33 @@ d3 = function() {
     };
   }
   d3.functor = d3_functor;
-  function d3_identity(d) {
-    return d;
+  d3.xhr = d3_xhrType(d3_identity);
+  function d3_xhrType(response) {
+    return function(url, mimeType, callback) {
+      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
+      mimeType = null;
+      return d3_xhr(url, mimeType, response, callback);
+    };
   }
-  d3.xhr = function(url, mimeType, callback) {
-    var xhr = {}, dispatch = d3.dispatch("progress", "load", "error"), headers = {}, response = d3_identity, request = new (d3_window.XDomainRequest && /^(http(s)?:)?\/\//.test(url) ? XDomainRequest : XMLHttpRequest)();
+  function d3_xhr(url, mimeType, response, callback) {
+    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
+    if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
     "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
       request.readyState > 3 && respond();
     };
     function respond() {
-      var s = request.status;
-      !s && request.responseText || s >= 200 && s < 300 || s === 304 ? dispatch.load.call(xhr, response.call(xhr, request)) : dispatch.error.call(xhr, request);
+      var status = request.status, result;
+      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
+        try {
+          result = response.call(xhr, request);
+        } catch (e) {
+          dispatch.error.call(xhr, e);
+          return;
+        }
+        dispatch.load.call(xhr, result);
+      } else {
+        dispatch.error.call(xhr, request);
+      }
     }
     request.onprogress = function(event) {
       var o = d3.event;
@@ -1657,6 +1971,11 @@ d3 = function() {
       mimeType = value == null ? null : value + "";
       return xhr;
     };
+    xhr.responseType = function(value) {
+      if (!arguments.length) return responseType;
+      responseType = value;
+      return xhr;
+    };
     xhr.response = function(value) {
       response = value;
       return xhr;
@@ -1672,9 +1991,11 @@ d3 = function() {
       if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
       if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
       if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
+      if (responseType != null) request.responseType = responseType;
       if (callback != null) xhr.on("error", callback).on("load", function(request) {
         callback(null, request);
       });
+      dispatch.beforesend.call(xhr, request);
       request.send(data == null ? null : data);
       return xhr;
     };
@@ -1683,24 +2004,26 @@ d3 = function() {
       return xhr;
     };
     d3.rebind(xhr, dispatch, "on");
-    if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
-    mimeType = null;
     return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
-  };
+  }
   function d3_xhr_fixCallback(callback) {
     return callback.length === 1 ? function(error, request) {
       callback(error == null ? request : null);
     } : callback;
   }
-  function d3_dsv(delimiter, mimeType) {
+  function d3_xhrHasResponse(request) {
+    var type = request.responseType;
+    return type && type !== "text" ? request.response : request.responseText;
+  }
+  d3.dsv = function(delimiter, mimeType) {
     var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
     function dsv(url, row, callback) {
       if (arguments.length < 3) callback = row, row = null;
-      var xhr = d3.xhr(url, mimeType, callback);
+      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
       xhr.row = function(_) {
         return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
       };
-      return xhr.row(row);
+      return xhr;
     }
     function response(request) {
       return dsv.parse(request.responseText);
@@ -1744,7 +2067,7 @@ d3 = function() {
           } else if (c === 10) {
             eol = true;
           }
-          return text.substring(j + 1, i).replace(/""/g, '"');
+          return text.slice(j + 1, i).replace(/""/g, '"');
         }
         while (I < N) {
           var c = text.charCodeAt(I++), k = 1;
@@ -1752,9 +2075,9 @@ d3 = function() {
             eol = true;
             if (text.charCodeAt(I) === 10) ++I, ++k;
           } else if (c !== delimiterCode) continue;
-          return text.substring(j, I - k);
+          return text.slice(j, I - k);
         }
-        return text.substring(j);
+        return text.slice(j);
       }
       while ((t = token()) !== EOF) {
         var a = [];
@@ -1762,7 +2085,7 @@ d3 = function() {
           a.push(t);
           t = token();
         }
-        if (f && !(a = f(a, n++))) continue;
+        if (f && (a = f(a, n++)) == null) continue;
         rows.push(a);
       }
       return rows;
@@ -1793,39 +2116,35 @@ d3 = function() {
       return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
     }
     return dsv;
-  }
-  d3.csv = d3_dsv(",", "text/csv");
-  d3.tsv = d3_dsv("	", "text/tab-separated-values");
-  var d3_timer_id = 0, d3_timer_byId = {}, d3_timer_queue = null, d3_timer_interval, d3_timer_timeout;
-  d3.timer = function(callback, delay, then) {
-    if (arguments.length < 3) {
-      if (arguments.length < 2) delay = 0; else if (!isFinite(delay)) return;
-      then = Date.now();
-    }
-    var timer = d3_timer_byId[callback.id];
-    if (timer && timer.callback === callback) {
-      timer.then = then;
-      timer.delay = delay;
-    } else d3_timer_byId[callback.id = ++d3_timer_id] = d3_timer_queue = {
-      callback: callback,
-      then: then,
-      delay: delay,
-      next: d3_timer_queue
-    };
+  };
+  d3.csv = d3.dsv(",", "text/csv");
+  d3.tsv = d3.dsv("	", "text/tab-separated-values");
+  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
+    setTimeout(callback, 17);
+  };
+  d3.timer = function() {
+    d3_timer.apply(this, arguments);
+  };
+  function d3_timer(callback, delay, then) {
+    var n = arguments.length;
+    if (n < 2) delay = 0;
+    if (n < 3) then = Date.now();
+    var time = then + delay, timer = {
+      c: callback,
+      t: time,
+      n: null
+    };
+    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
+    d3_timer_queueTail = timer;
     if (!d3_timer_interval) {
       d3_timer_timeout = clearTimeout(d3_timer_timeout);
       d3_timer_interval = 1;
       d3_timer_frame(d3_timer_step);
     }
-  };
+    return timer;
+  }
   function d3_timer_step() {
-    var elapsed, now = Date.now(), t1 = d3_timer_queue;
-    while (t1) {
-      elapsed = now - t1.then;
-      if (elapsed >= t1.delay) t1.flush = t1.callback(elapsed);
-      t1 = t1.next;
-    }
-    var delay = d3_timer_flush() - now;
+    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
     if (delay > 24) {
       if (isFinite(delay)) {
         clearTimeout(d3_timer_timeout);
@@ -1838,44 +2157,49 @@ d3 = function() {
     }
   }
   d3.timer.flush = function() {
-    var elapsed, now = Date.now(), t1 = d3_timer_queue;
-    while (t1) {
-      elapsed = now - t1.then;
-      if (!t1.delay) t1.flush = t1.callback(elapsed);
-      t1 = t1.next;
-    }
-    d3_timer_flush();
+    d3_timer_mark();
+    d3_timer_sweep();
   };
-  function d3_timer_flush() {
-    var t0 = null, t1 = d3_timer_queue, then = Infinity;
+  function d3_timer_mark() {
+    var now = Date.now(), timer = d3_timer_queueHead;
+    while (timer) {
+      if (now >= timer.t && timer.c(now - timer.t)) timer.c = null;
+      timer = timer.n;
+    }
+    return now;
+  }
+  function d3_timer_sweep() {
+    var t0, t1 = d3_timer_queueHead, time = Infinity;
     while (t1) {
-      if (t1.flush) {
-        delete d3_timer_byId[t1.callback.id];
-        t1 = t0 ? t0.next = t1.next : d3_timer_queue = t1.next;
+      if (t1.c) {
+        if (t1.t < time) time = t1.t;
+        t1 = (t0 = t1).n;
       } else {
-        then = Math.min(then, t1.then + t1.delay);
-        t1 = (t0 = t1).next;
+        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
       }
     }
-    return then;
+    d3_timer_queueTail = t0;
+    return time;
   }
-  var d3_timer_frame = d3_window.requestAnimationFrame || d3_window.webkitRequestAnimationFrame || d3_window.mozRequestAnimationFrame || d3_window.oRequestAnimationFrame || d3_window.msRequestAnimationFrame || function(callback) {
-    setTimeout(callback, 17);
+  function d3_format_precision(x, p) {
+    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
+  }
+  d3.round = function(x, n) {
+    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
   };
-  var d3_format_decimalPoint = ".", d3_format_thousandsSeparator = ",", d3_format_grouping = [ 3, 3 ];
   var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
   d3.formatPrefix = function(value, precision) {
     var i = 0;
-    if (value) {
+    if (value = +value) {
       if (value < 0) value *= -1;
       if (precision) value = d3.round(value, d3_format_precision(value, precision));
       i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
-      i = Math.max(-24, Math.min(24, Math.floor((i <= 0 ? i + 1 : i - 1) / 3) * 3));
+      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
     }
     return d3_formatPrefixes[8 + i / 3];
   };
   function d3_formatPrefix(d, i) {
-    var k = Math.pow(10, Math.abs(8 - i) * 3);
+    var k = Math.pow(10, abs(8 - i) * 3);
     return {
       scale: i > 8 ? function(d) {
         return d / k;
@@ -1885,79 +2209,98 @@ d3 = function() {
       symbol: d
     };
   }
-  d3.round = function(x, n) {
-    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
-  };
-  d3.format = function(specifier) {
-    var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "", basePrefix = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, suffix = "", integer = false;
-    if (precision) precision = +precision.substring(1);
-    if (zfill || fill === "0" && align === "=") {
-      zfill = fill = "0";
-      align = "=";
-      if (comma) width -= Math.floor((width - 1) / 4);
-    }
-    switch (type) {
-     case "n":
-      comma = true;
-      type = "g";
-      break;
+  function d3_locale_numberFormat(locale) {
+    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
+      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
+      while (i > 0 && g > 0) {
+        if (length + g + 1 > width) g = Math.max(1, width - length);
+        t.push(value.substring(i -= g, i + g));
+        if ((length += g + 1) > width) break;
+        g = locale_grouping[j = (j + 1) % locale_grouping.length];
+      }
+      return t.reverse().join(locale_thousands);
+    } : d3_identity;
+    return function(specifier) {
+      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
+      if (precision) precision = +precision.substring(1);
+      if (zfill || fill === "0" && align === "=") {
+        zfill = fill = "0";
+        align = "=";
+      }
+      switch (type) {
+       case "n":
+        comma = true;
+        type = "g";
+        break;
 
-     case "%":
-      scale = 100;
-      suffix = "%";
-      type = "f";
-      break;
+       case "%":
+        scale = 100;
+        suffix = "%";
+        type = "f";
+        break;
 
-     case "p":
-      scale = 100;
-      suffix = "%";
-      type = "r";
-      break;
+       case "p":
+        scale = 100;
+        suffix = "%";
+        type = "r";
+        break;
 
-     case "b":
-     case "o":
-     case "x":
-     case "X":
-      if (basePrefix) basePrefix = "0" + type.toLowerCase();
+       case "b":
+       case "o":
+       case "x":
+       case "X":
+        if (symbol === "#") prefix = "0" + type.toLowerCase();
 
-     case "c":
-     case "d":
-      integer = true;
-      precision = 0;
-      break;
+       case "c":
+        exponent = false;
 
-     case "s":
-      scale = -1;
-      type = "r";
-      break;
-    }
-    if (basePrefix === "#") basePrefix = "";
-    if (type == "r" && !precision) type = "g";
-    if (precision != null) {
-      if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
-    }
-    type = d3_format_types.get(type) || d3_format_typeDefault;
-    var zcomma = zfill && comma;
-    return function(value) {
-      if (integer && value % 1) return "";
-      var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign;
-      if (scale < 0) {
-        var prefix = d3.formatPrefix(value, precision);
-        value = prefix.scale(value);
-        suffix = prefix.symbol;
-      } else {
-        value *= scale;
+       case "d":
+        integer = true;
+        precision = 0;
+        break;
+
+       case "s":
+        scale = -1;
+        type = "r";
+        break;
       }
-      value = type(value, precision);
-      if (!zfill && comma) value = d3_format_group(value);
-      var length = basePrefix.length + value.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
-      if (zcomma) value = d3_format_group(padding + value);
-      if (d3_format_decimalPoint) value.replace(".", d3_format_decimalPoint);
-      negative += basePrefix;
-      return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + suffix;
+      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
+      if (type == "r" && !precision) type = "g";
+      if (precision != null) {
+        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
+      }
+      type = d3_format_types.get(type) || d3_format_typeDefault;
+      var zcomma = zfill && comma;
+      return function(value) {
+        var fullSuffix = suffix;
+        if (integer && value % 1) return "";
+        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
+        if (scale < 0) {
+          var unit = d3.formatPrefix(value, precision);
+          value = unit.scale(value);
+          fullSuffix = unit.symbol + suffix;
+        } else {
+          value *= scale;
+        }
+        value = type(value, precision);
+        var i = value.lastIndexOf("."), before, after;
+        if (i < 0) {
+          var j = exponent ? value.lastIndexOf("e") : -1;
+          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
+        } else {
+          before = value.substring(0, i);
+          after = locale_decimal + value.substring(i + 1);
+        }
+        if (!zfill && comma) before = formatGroup(before, Infinity);
+        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
+        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
+        negative += prefix;
+        value = before + after;
+        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
+      };
     };
-  };
-  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
+  }
+  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
   var d3_format_types = d3.map({
     b: function(x) {
       return x.toString(2);
@@ -1987,26 +2330,545 @@ d3 = function() {
       return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
     }
   });
-  function d3_format_precision(x, p) {
-    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
-  }
   function d3_format_typeDefault(x) {
     return x + "";
   }
-  var d3_format_group = d3_identity;
-  if (d3_format_grouping) {
-    var d3_format_groupingLength = d3_format_grouping.length;
-    d3_format_group = function(value) {
-      var i = value.lastIndexOf("."), f = i >= 0 ? "." + value.substring(i + 1) : (i = value.length, 
-      ""), t = [], j = 0, g = d3_format_grouping[0];
-      while (i > 0 && g > 0) {
-        t.push(value.substring(i -= g, i + g));
-        g = d3_format_grouping[j = (j + 1) % d3_format_groupingLength];
+  var d3_time = d3.time = {}, d3_date = Date;
+  function d3_date_utc() {
+    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
+  }
+  d3_date_utc.prototype = {
+    getDate: function() {
+      return this._.getUTCDate();
+    },
+    getDay: function() {
+      return this._.getUTCDay();
+    },
+    getFullYear: function() {
+      return this._.getUTCFullYear();
+    },
+    getHours: function() {
+      return this._.getUTCHours();
+    },
+    getMilliseconds: function() {
+      return this._.getUTCMilliseconds();
+    },
+    getMinutes: function() {
+      return this._.getUTCMinutes();
+    },
+    getMonth: function() {
+      return this._.getUTCMonth();
+    },
+    getSeconds: function() {
+      return this._.getUTCSeconds();
+    },
+    getTime: function() {
+      return this._.getTime();
+    },
+    getTimezoneOffset: function() {
+      return 0;
+    },
+    valueOf: function() {
+      return this._.valueOf();
+    },
+    setDate: function() {
+      d3_time_prototype.setUTCDate.apply(this._, arguments);
+    },
+    setDay: function() {
+      d3_time_prototype.setUTCDay.apply(this._, arguments);
+    },
+    setFullYear: function() {
+      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
+    },
+    setHours: function() {
+      d3_time_prototype.setUTCHours.apply(this._, arguments);
+    },
+    setMilliseconds: function() {
+      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
+    },
+    setMinutes: function() {
+      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
+    },
+    setMonth: function() {
+      d3_time_prototype.setUTCMonth.apply(this._, arguments);
+    },
+    setSeconds: function() {
+      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
+    },
+    setTime: function() {
+      d3_time_prototype.setTime.apply(this._, arguments);
+    }
+  };
+  var d3_time_prototype = Date.prototype;
+  function d3_time_interval(local, step, number) {
+    function round(date) {
+      var d0 = local(date), d1 = offset(d0, 1);
+      return date - d0 < d1 - date ? d0 : d1;
+    }
+    function ceil(date) {
+      step(date = local(new d3_date(date - 1)), 1);
+      return date;
+    }
+    function offset(date, k) {
+      step(date = new d3_date(+date), k);
+      return date;
+    }
+    function range(t0, t1, dt) {
+      var time = ceil(t0), times = [];
+      if (dt > 1) {
+        while (time < t1) {
+          if (!(number(time) % dt)) times.push(new Date(+time));
+          step(time, 1);
+        }
+      } else {
+        while (time < t1) times.push(new Date(+time)), step(time, 1);
+      }
+      return times;
+    }
+    function range_utc(t0, t1, dt) {
+      try {
+        d3_date = d3_date_utc;
+        var utc = new d3_date_utc();
+        utc._ = t0;
+        return range(utc, t1, dt);
+      } finally {
+        d3_date = Date;
+      }
+    }
+    local.floor = local;
+    local.round = round;
+    local.ceil = ceil;
+    local.offset = offset;
+    local.range = range;
+    var utc = local.utc = d3_time_interval_utc(local);
+    utc.floor = utc;
+    utc.round = d3_time_interval_utc(round);
+    utc.ceil = d3_time_interval_utc(ceil);
+    utc.offset = d3_time_interval_utc(offset);
+    utc.range = range_utc;
+    return local;
+  }
+  function d3_time_interval_utc(method) {
+    return function(date, k) {
+      try {
+        d3_date = d3_date_utc;
+        var utc = new d3_date_utc();
+        utc._ = date;
+        return method(utc, k)._;
+      } finally {
+        d3_date = Date;
       }
-      return t.reverse().join(d3_format_thousandsSeparator || "") + f;
     };
   }
+  d3_time.year = d3_time_interval(function(date) {
+    date = d3_time.day(date);
+    date.setMonth(0, 1);
+    return date;
+  }, function(date, offset) {
+    date.setFullYear(date.getFullYear() + offset);
+  }, function(date) {
+    return date.getFullYear();
+  });
+  d3_time.years = d3_time.year.range;
+  d3_time.years.utc = d3_time.year.utc.range;
+  d3_time.day = d3_time_interval(function(date) {
+    var day = new d3_date(2e3, 0);
+    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
+    return day;
+  }, function(date, offset) {
+    date.setDate(date.getDate() + offset);
+  }, function(date) {
+    return date.getDate() - 1;
+  });
+  d3_time.days = d3_time.day.range;
+  d3_time.days.utc = d3_time.day.utc.range;
+  d3_time.dayOfYear = function(date) {
+    var year = d3_time.year(date);
+    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
+  };
+  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
+    i = 7 - i;
+    var interval = d3_time[day] = d3_time_interval(function(date) {
+      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
+      return date;
+    }, function(date, offset) {
+      date.setDate(date.getDate() + Math.floor(offset) * 7);
+    }, function(date) {
+      var day = d3_time.year(date).getDay();
+      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
+    });
+    d3_time[day + "s"] = interval.range;
+    d3_time[day + "s"].utc = interval.utc.range;
+    d3_time[day + "OfYear"] = function(date) {
+      var day = d3_time.year(date).getDay();
+      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
+    };
+  });
+  d3_time.week = d3_time.sunday;
+  d3_time.weeks = d3_time.sunday.range;
+  d3_time.weeks.utc = d3_time.sunday.utc.range;
+  d3_time.weekOfYear = d3_time.sundayOfYear;
+  function d3_locale_timeFormat(locale) {
+    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
+    function d3_time_format(template) {
+      var n = template.length;
+      function format(date) {
+        var string = [], i = -1, j = 0, c, p, f;
+        while (++i < n) {
+          if (template.charCodeAt(i) === 37) {
+            string.push(template.slice(j, i));
+            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
+            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
+            string.push(c);
+            j = i + 1;
+          }
+        }
+        string.push(template.slice(j, i));
+        return string.join("");
+      }
+      format.parse = function(string) {
+        var d = {
+          y: 1900,
+          m: 0,
+          d: 1,
+          H: 0,
+          M: 0,
+          S: 0,
+          L: 0,
+          Z: null
+        }, i = d3_time_parse(d, template, string, 0);
+        if (i != string.length) return null;
+        if ("p" in d) d.H = d.H % 12 + d.p * 12;
+        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
+        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("W" in d || "U" in d) {
+          if (!("w" in d)) d.w = "W" in d ? 1 : 0;
+          date.setFullYear(d.y, 0, 1);
+          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
+        } else date.setFullYear(d.y, d.m, d.d);
+        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
+        return localZ ? date._ : date;
+      };
+      format.toString = function() {
+        return template;
+      };
+      return format;
+    }
+    function d3_time_parse(date, template, string, j) {
+      var c, p, t, i = 0, n = template.length, m = string.length;
+      while (i < n) {
+        if (j >= m) return -1;
+        c = template.charCodeAt(i++);
+        if (c === 37) {
+          t = template.charAt(i++);
+          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
+          if (!p || (j = p(date, string, j)) < 0) return -1;
+        } else if (c != string.charCodeAt(j++)) {
+          return -1;
+        }
+      }
+      return j;
+    }
+    d3_time_format.utc = function(template) {
+      var local = d3_time_format(template);
+      function format(date) {
+        try {
+          d3_date = d3_date_utc;
+          var utc = new d3_date();
+          utc._ = date;
+          return local(utc);
+        } finally {
+          d3_date = Date;
+        }
+      }
+      format.parse = function(string) {
+        try {
+          d3_date = d3_date_utc;
+          var date = local.parse(string);
+          return date && date._;
+        } finally {
+          d3_date = Date;
+        }
+      };
+      format.toString = local.toString;
+      return format;
+    };
+    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
+    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
+    locale_periods.forEach(function(p, i) {
+      d3_time_periodLookup.set(p.toLowerCase(), i);
+    });
+    var d3_time_formats = {
+      a: function(d) {
+        return locale_shortDays[d.getDay()];
+      },
+      A: function(d) {
+        return locale_days[d.getDay()];
+      },
+      b: function(d) {
+        return locale_shortMonths[d.getMonth()];
+      },
+      B: function(d) {
+        return locale_months[d.getMonth()];
+      },
+      c: d3_time_format(locale_dateTime),
+      d: function(d, p) {
+        return d3_time_formatPad(d.getDate(), p, 2);
+      },
+      e: function(d, p) {
+        return d3_time_formatPad(d.getDate(), p, 2);
+      },
+      H: function(d, p) {
+        return d3_time_formatPad(d.getHours(), p, 2);
+      },
+      I: function(d, p) {
+        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
+      },
+      j: function(d, p) {
+        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
+      },
+      L: function(d, p) {
+        return d3_time_formatPad(d.getMilliseconds(), p, 3);
+      },
+      m: function(d, p) {
+        return d3_time_formatPad(d.getMonth() + 1, p, 2);
+      },
+      M: function(d, p) {
+        return d3_time_formatPad(d.getMinutes(), p, 2);
+      },
+      p: function(d) {
+        return locale_periods[+(d.getHours() >= 12)];
+      },
+      S: function(d, p) {
+        return d3_time_formatPad(d.getSeconds(), p, 2);
+      },
+      U: function(d, p) {
+        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
+      },
+      w: function(d) {
+        return d.getDay();
+      },
+      W: function(d, p) {
+        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
+      },
+      x: d3_time_format(locale_date),
+      X: d3_time_format(locale_time),
+      y: function(d, p) {
+        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
+      },
+      Y: function(d, p) {
+        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
+      },
+      Z: d3_time_zone,
+      "%": function() {
+        return "%";
+      }
+    };
+    var d3_time_parsers = {
+      a: d3_time_parseWeekdayAbbrev,
+      A: d3_time_parseWeekday,
+      b: d3_time_parseMonthAbbrev,
+      B: d3_time_parseMonth,
+      c: d3_time_parseLocaleFull,
+      d: d3_time_parseDay,
+      e: d3_time_parseDay,
+      H: d3_time_parseHour24,
+      I: d3_time_parseHour24,
+      j: d3_time_parseDayOfYear,
+      L: d3_time_parseMilliseconds,
+      m: d3_time_parseMonthNumber,
+      M: d3_time_parseMinutes,
+      p: d3_time_parseAmPm,
+      S: d3_time_parseSeconds,
+      U: d3_time_parseWeekNumberSunday,
+      w: d3_time_parseWeekdayNumber,
+      W: d3_time_parseWeekNumberMonday,
+      x: d3_time_parseLocaleDate,
+      X: d3_time_parseLocaleTime,
+      y: d3_time_parseYear,
+      Y: d3_time_parseFullYear,
+      Z: d3_time_parseZone,
+      "%": d3_time_parseLiteralPercent
+    };
+    function d3_time_parseWeekdayAbbrev(date, string, i) {
+      d3_time_dayAbbrevRe.lastIndex = 0;
+      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
+      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+    }
+    function d3_time_parseWeekday(date, string, i) {
+      d3_time_dayRe.lastIndex = 0;
+      var n = d3_time_dayRe.exec(string.slice(i));
+      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+    }
+    function d3_time_parseMonthAbbrev(date, string, i) {
+      d3_time_monthAbbrevRe.lastIndex = 0;
+      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
+      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+    }
+    function d3_time_parseMonth(date, string, i) {
+      d3_time_monthRe.lastIndex = 0;
+      var n = d3_time_monthRe.exec(string.slice(i));
+      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+    }
+    function d3_time_parseLocaleFull(date, string, i) {
+      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
+    }
+    function d3_time_parseLocaleDate(date, string, i) {
+      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
+    }
+    function d3_time_parseLocaleTime(date, string, i) {
+      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
+    }
+    function d3_time_parseAmPm(date, string, i) {
+      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
+      return n == null ? -1 : (date.p = n, i);
+    }
+    return d3_time_format;
+  }
+  var d3_time_formatPads = {
+    "-": "",
+    _: " ",
+    "0": "0"
+  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
+  function d3_time_formatPad(value, fill, width) {
+    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
+    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
+  }
+  function d3_time_formatRe(names) {
+    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
+  }
+  function d3_time_formatLookup(names) {
+    var map = new d3_Map(), i = -1, n = names.length;
+    while (++i < n) map.set(names[i].toLowerCase(), i);
+    return map;
+  }
+  function d3_time_parseWeekdayNumber(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
+    return n ? (date.w = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_parseWeekNumberSunday(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i));
+    return n ? (date.U = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_parseWeekNumberMonday(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i));
+    return n ? (date.W = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_parseFullYear(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
+    return n ? (date.y = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_parseYear(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
+  }
+  function d3_time_parseZone(date, string, i) {
+    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string, 
+    i + 5) : -1;
+  }
+  function d3_time_expandYear(d) {
+    return d + (d > 68 ? 1900 : 2e3);
+  }
+  function d3_time_parseMonthNumber(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
+  }
+  function d3_time_parseDay(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+    return n ? (date.d = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_parseDayOfYear(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
+    return n ? (date.j = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_parseHour24(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+    return n ? (date.H = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_parseMinutes(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+    return n ? (date.M = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_parseSeconds(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+    return n ? (date.S = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_parseMilliseconds(date, string, i) {
+    d3_time_numberRe.lastIndex = 0;
+    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
+    return n ? (date.L = +n[0], i + n[0].length) : -1;
+  }
+  function d3_time_zone(d) {
+    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
+    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
+  }
+  function d3_time_parseLiteralPercent(date, string, i) {
+    d3_time_percentRe.lastIndex = 0;
+    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
+    return n ? i + n[0].length : -1;
+  }
+  function d3_time_formatMulti(formats) {
+    var n = formats.length, i = -1;
+    while (++i < n) formats[i][0] = this(formats[i][0]);
+    return function(date) {
+      var i = 0, f = formats[i];
+      while (!f[1](date)) f = formats[++i];
+      return f[0](date);
+    };
+  }
+  d3.locale = function(locale) {
+    return {
+      numberFormat: d3_locale_numberFormat(locale),
+      timeFormat: d3_locale_timeFormat(locale)
+    };
+  };
+  var d3_locale_enUS = d3.locale({
+    decimal: ".",
+    thousands: ",",
+    grouping: [ 3 ],
+    currency: [ "$", "" ],
+    dateTime: "%a %b %e %X %Y",
+    date: "%m/%d/%Y",
+    time: "%H:%M:%S",
+    periods: [ "AM", "PM" ],
+    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
+    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
+    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
+    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
+  });
+  d3.format = d3_locale_enUS.numberFormat;
   d3.geo = {};
+  function d3_adder() {}
+  d3_adder.prototype = {
+    s: 0,
+    t: 0,
+    add: function(y) {
+      d3_adderSum(y, this.t, d3_adderTemp);
+      d3_adderSum(d3_adderTemp.s, this.s, this);
+      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
+    },
+    reset: function() {
+      this.s = this.t = 0;
+    },
+    valueOf: function() {
+      return this.s;
+    }
+  };
+  var d3_adderTemp = new d3_adder();
+  function d3_adderSum(a, b, o) {
+    var x = o.s = a + b, bv = x - a, av = x - bv;
+    o.t = a - av + (b - bv);
+  }
   d3.geo.stream = function(object, listener) {
     if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
       d3_geo_streamObjectType[object.type](object, listener);
@@ -2033,12 +2895,12 @@ d3 = function() {
       listener.sphere();
     },
     Point: function(object, listener) {
-      var coordinate = object.coordinates;
-      listener.point(coordinate[0], coordinate[1]);
+      object = object.coordinates;
+      listener.point(object[0], object[1], object[2]);
     },
     MultiPoint: function(object, listener) {
-      var coordinates = object.coordinates, i = -1, n = coordinates.length, coordinate;
-      while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1]);
+      var coordinates = object.coordinates, i = -1, n = coordinates.length;
+      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
     },
     LineString: function(object, listener) {
       d3_geo_streamLine(object.coordinates, listener, 0);
@@ -2062,7 +2924,7 @@ d3 = function() {
   function d3_geo_streamLine(coordinates, listener, closed) {
     var i = -1, n = coordinates.length - closed, coordinate;
     listener.lineStart();
-    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1]);
+    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
     listener.lineEnd();
   }
   function d3_geo_streamPolygon(coordinates, listener) {
@@ -2076,7 +2938,7 @@ d3 = function() {
     d3.geo.stream(object, d3_geo_area);
     return d3_geo_areaSum;
   };
-  var d3_geo_areaSum, d3_geo_areaRingU, d3_geo_areaRingV;
+  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
   var d3_geo_area = {
     sphere: function() {
       d3_geo_areaSum += 4 * π;
@@ -2085,11 +2947,11 @@ d3 = function() {
     lineStart: d3_noop,
     lineEnd: d3_noop,
     polygonStart: function() {
-      d3_geo_areaRingU = 1, d3_geo_areaRingV = 0;
+      d3_geo_areaRingSum.reset();
       d3_geo_area.lineStart = d3_geo_areaRingStart;
     },
     polygonEnd: function() {
-      var area = 2 * Math.atan2(d3_geo_areaRingV, d3_geo_areaRingU);
+      var area = 2 * d3_geo_areaRingSum;
       d3_geo_areaSum += area < 0 ? 4 * π + area : area;
       d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
     }
@@ -2104,68 +2966,191 @@ d3 = function() {
     function nextPoint(λ, φ) {
       λ *= d3_radians;
       φ = φ * d3_radians / 2 + π / 4;
-      var dλ = λ - λ0, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u0 = d3_geo_areaRingU, v0 = d3_geo_areaRingV, u = cosφ0 * cosφ + k * Math.cos(dλ), v = k * Math.sin(dλ);
-      d3_geo_areaRingU = u0 * u - v0 * v;
-      d3_geo_areaRingV = v0 * u + u0 * v;
+      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
+      d3_geo_areaRingSum.add(Math.atan2(v, u));
       λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
     }
     d3_geo_area.lineEnd = function() {
       nextPoint(λ00, φ00);
     };
   }
-  d3.geo.bounds = d3_geo_bounds(d3_identity);
-  function d3_geo_bounds(projectStream) {
-    var x0, y0, x1, y1;
+  function d3_geo_cartesian(spherical) {
+    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
+    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
+  }
+  function d3_geo_cartesianDot(a, b) {
+    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+  }
+  function d3_geo_cartesianCross(a, b) {
+    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
+  }
+  function d3_geo_cartesianAdd(a, b) {
+    a[0] += b[0];
+    a[1] += b[1];
+    a[2] += b[2];
+  }
+  function d3_geo_cartesianScale(vector, k) {
+    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
+  }
+  function d3_geo_cartesianNormalize(d) {
+    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
+    d[0] /= l;
+    d[1] /= l;
+    d[2] /= l;
+  }
+  function d3_geo_spherical(cartesian) {
+    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
+  }
+  function d3_geo_sphericalEqual(a, b) {
+    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
+  }
+  d3.geo.bounds = function() {
+    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
     var bound = {
-      point: boundPoint,
-      lineStart: d3_noop,
-      lineEnd: d3_noop,
+      point: point,
+      lineStart: lineStart,
+      lineEnd: lineEnd,
       polygonStart: function() {
-        bound.lineEnd = boundPolygonLineEnd;
+        bound.point = ringPoint;
+        bound.lineStart = ringStart;
+        bound.lineEnd = ringEnd;
+        dλSum = 0;
+        d3_geo_area.polygonStart();
       },
       polygonEnd: function() {
-        bound.point = boundPoint;
+        d3_geo_area.polygonEnd();
+        bound.point = point;
+        bound.lineStart = lineStart;
+        bound.lineEnd = lineEnd;
+        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
+        range[0] = λ0, range[1] = λ1;
+      }
+    };
+    function point(λ, φ) {
+      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
+      if (φ < φ0) φ0 = φ;
+      if (φ > φ1) φ1 = φ;
+    }
+    function linePoint(λ, φ) {
+      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
+      if (p0) {
+        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
+        d3_geo_cartesianNormalize(inflection);
+        inflection = d3_geo_spherical(inflection);
+        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
+        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
+          var φi = inflection[1] * d3_degrees;
+          if (φi > φ1) φ1 = φi;
+        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
+          var φi = -inflection[1] * d3_degrees;
+          if (φi < φ0) φ0 = φi;
+        } else {
+          if (φ < φ0) φ0 = φ;
+          if (φ > φ1) φ1 = φ;
+        }
+        if (antimeridian) {
+          if (λ < λ_) {
+            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
+          } else {
+            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
+          }
+        } else {
+          if (λ1 >= λ0) {
+            if (λ < λ0) λ0 = λ;
+            if (λ > λ1) λ1 = λ;
+          } else {
+            if (λ > λ_) {
+              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
+            } else {
+              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
+            }
+          }
+        }
+      } else {
+        point(λ, φ);
       }
-    };
-    function boundPoint(x, y) {
-      if (x < x0) x0 = x;
-      if (x > x1) x1 = x;
-      if (y < y0) y0 = y;
-      if (y > y1) y1 = y;
+      p0 = p, λ_ = λ;
+    }
+    function lineStart() {
+      bound.point = linePoint;
+    }
+    function lineEnd() {
+      range[0] = λ0, range[1] = λ1;
+      bound.point = point;
+      p0 = null;
+    }
+    function ringPoint(λ, φ) {
+      if (p0) {
+        var dλ = λ - λ_;
+        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
+      } else λ__ = λ, φ__ = φ;
+      d3_geo_area.point(λ, φ);
+      linePoint(λ, φ);
+    }
+    function ringStart() {
+      d3_geo_area.lineStart();
     }
-    function boundPolygonLineEnd() {
-      bound.point = bound.lineEnd = d3_noop;
+    function ringEnd() {
+      ringPoint(λ__, φ__);
+      d3_geo_area.lineEnd();
+      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
+      range[0] = λ0, range[1] = λ1;
+      p0 = null;
+    }
+    function angle(λ0, λ1) {
+      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
+    }
+    function compareRanges(a, b) {
+      return a[0] - b[0];
+    }
+    function withinRange(x, range) {
+      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
     }
     return function(feature) {
-      y1 = x1 = -(x0 = y0 = Infinity);
-      d3.geo.stream(feature, projectStream(bound));
-      return [ [ x0, y0 ], [ x1, y1 ] ];
+      φ1 = λ1 = -(λ0 = φ0 = Infinity);
+      ranges = [];
+      d3.geo.stream(feature, bound);
+      var n = ranges.length;
+      if (n) {
+        ranges.sort(compareRanges);
+        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
+          b = ranges[i];
+          if (withinRange(b[0], a) || withinRange(b[1], a)) {
+            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
+            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
+          } else {
+            merged.push(a = b);
+          }
+        }
+        var best = -Infinity, dλ;
+        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
+          b = merged[i];
+          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
+        }
+      }
+      ranges = range = null;
+      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
     };
-  }
+  }();
   d3.geo.centroid = function(object) {
-    d3_geo_centroidDimension = d3_geo_centroidW = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
+    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
     d3.geo.stream(object, d3_geo_centroid);
-    var m;
-    if (d3_geo_centroidW && Math.abs(m = Math.sqrt(d3_geo_centroidX * d3_geo_centroidX + d3_geo_centroidY * d3_geo_centroidY + d3_geo_centroidZ * d3_geo_centroidZ)) > ε) {
-      return [ Math.atan2(d3_geo_centroidY, d3_geo_centroidX) * d3_degrees, Math.asin(Math.max(-1, Math.min(1, d3_geo_centroidZ / m))) * d3_degrees ];
+    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
+    if (m < ε2) {
+      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
+      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
+      m = x * x + y * y + z * z;
+      if (m < ε2) return [ NaN, NaN ];
     }
+    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
   };
-  var d3_geo_centroidDimension, d3_geo_centroidW, d3_geo_centroidX, d3_geo_centroidY, d3_geo_centroidZ;
+  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
   var d3_geo_centroid = {
-    sphere: function() {
-      if (d3_geo_centroidDimension < 2) {
-        d3_geo_centroidDimension = 2;
-        d3_geo_centroidW = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
-      }
-    },
+    sphere: d3_noop,
     point: d3_geo_centroidPoint,
     lineStart: d3_geo_centroidLineStart,
     lineEnd: d3_geo_centroidLineEnd,
     polygonStart: function() {
-      if (d3_geo_centroidDimension < 2) {
-        d3_geo_centroidDimension = 2;
-        d3_geo_centroidW = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
-      }
       d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
     },
     polygonEnd: function() {
@@ -2173,36 +3158,18 @@ d3 = function() {
     }
   };
   function d3_geo_centroidPoint(λ, φ) {
-    if (d3_geo_centroidDimension) return;
-    ++d3_geo_centroidW;
     λ *= d3_radians;
     var cosφ = Math.cos(φ *= d3_radians);
-    d3_geo_centroidX += (cosφ * Math.cos(λ) - d3_geo_centroidX) / d3_geo_centroidW;
-    d3_geo_centroidY += (cosφ * Math.sin(λ) - d3_geo_centroidY) / d3_geo_centroidW;
-    d3_geo_centroidZ += (Math.sin(φ) - d3_geo_centroidZ) / d3_geo_centroidW;
+    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
   }
-  function d3_geo_centroidRingStart() {
-    var λ00, φ00;
-    d3_geo_centroidDimension = 1;
-    d3_geo_centroidLineStart();
-    d3_geo_centroidDimension = 2;
-    var linePoint = d3_geo_centroid.point;
-    d3_geo_centroid.point = function(λ, φ) {
-      linePoint(λ00 = λ, φ00 = φ);
-    };
-    d3_geo_centroid.lineEnd = function() {
-      d3_geo_centroid.point(λ00, φ00);
-      d3_geo_centroidLineEnd();
-      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
-    };
+  function d3_geo_centroidPointXYZ(x, y, z) {
+    ++d3_geo_centroidW0;
+    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
+    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
+    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
   }
   function d3_geo_centroidLineStart() {
     var x0, y0, z0;
-    if (d3_geo_centroidDimension > 1) return;
-    if (d3_geo_centroidDimension < 1) {
-      d3_geo_centroidDimension = 1;
-      d3_geo_centroidW = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
-    }
     d3_geo_centroid.point = function(λ, φ) {
       λ *= d3_radians;
       var cosφ = Math.cos(φ *= d3_radians);
@@ -2210,53 +3177,64 @@ d3 = function() {
       y0 = cosφ * Math.sin(λ);
       z0 = Math.sin(φ);
       d3_geo_centroid.point = nextPoint;
+      d3_geo_centroidPointXYZ(x0, y0, z0);
     };
     function nextPoint(λ, φ) {
       λ *= d3_radians;
       var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
-      d3_geo_centroidW += w;
-      d3_geo_centroidX += w * (x0 + (x0 = x));
-      d3_geo_centroidY += w * (y0 + (y0 = y));
-      d3_geo_centroidZ += w * (z0 + (z0 = z));
+      d3_geo_centroidW1 += w;
+      d3_geo_centroidX1 += w * (x0 + (x0 = x));
+      d3_geo_centroidY1 += w * (y0 + (y0 = y));
+      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
+      d3_geo_centroidPointXYZ(x0, y0, z0);
     }
   }
   function d3_geo_centroidLineEnd() {
     d3_geo_centroid.point = d3_geo_centroidPoint;
   }
-  function d3_geo_cartesian(spherical) {
-    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
-    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
-  }
-  function d3_geo_cartesianDot(a, b) {
-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
-  }
-  function d3_geo_cartesianCross(a, b) {
-    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
-  }
-  function d3_geo_cartesianAdd(a, b) {
-    a[0] += b[0];
-    a[1] += b[1];
-    a[2] += b[2];
-  }
-  function d3_geo_cartesianScale(vector, k) {
-    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
+  function d3_geo_centroidRingStart() {
+    var λ00, φ00, x0, y0, z0;
+    d3_geo_centroid.point = function(λ, φ) {
+      λ00 = λ, φ00 = φ;
+      d3_geo_centroid.point = nextPoint;
+      λ *= d3_radians;
+      var cosφ = Math.cos(φ *= d3_radians);
+      x0 = cosφ * Math.cos(λ);
+      y0 = cosφ * Math.sin(λ);
+      z0 = Math.sin(φ);
+      d3_geo_centroidPointXYZ(x0, y0, z0);
+    };
+    d3_geo_centroid.lineEnd = function() {
+      nextPoint(λ00, φ00);
+      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
+      d3_geo_centroid.point = d3_geo_centroidPoint;
+    };
+    function nextPoint(λ, φ) {
+      λ *= d3_radians;
+      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
+      d3_geo_centroidX2 += v * cx;
+      d3_geo_centroidY2 += v * cy;
+      d3_geo_centroidZ2 += v * cz;
+      d3_geo_centroidW1 += w;
+      d3_geo_centroidX1 += w * (x0 + (x0 = x));
+      d3_geo_centroidY1 += w * (y0 + (y0 = y));
+      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
+      d3_geo_centroidPointXYZ(x0, y0, z0);
+    }
   }
-  function d3_geo_cartesianNormalize(d) {
-    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
-    d[0] /= l;
-    d[1] /= l;
-    d[2] /= l;
+  function d3_geo_compose(a, b) {
+    function compose(x, y) {
+      return x = a(x, y), b(x[0], x[1]);
+    }
+    if (a.invert && b.invert) compose.invert = function(x, y) {
+      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
+    };
+    return compose;
   }
   function d3_true() {
     return true;
   }
-  function d3_geo_spherical(cartesian) {
-    return [ Math.atan2(cartesian[1], cartesian[0]), Math.asin(Math.max(-1, Math.min(1, cartesian[2]))) ];
-  }
-  function d3_geo_sphericalEqual(a, b) {
-    return Math.abs(a[0] - b[0]) < ε && Math.abs(a[1] - b[1]) < ε;
-  }
-  function d3_geo_clipPolygon(segments, compare, inside, interpolate, listener) {
+  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
     var subject = [], clip = [];
     segments.forEach(function(segment) {
       if ((n = segment.length - 1) <= 0) return;
@@ -2267,41 +3245,13 @@ d3 = function() {
         listener.lineEnd();
         return;
       }
-      var a = {
-        point: p0,
-        points: segment,
-        other: null,
-        visited: false,
-        entry: true,
-        subject: true
-      }, b = {
-        point: p0,
-        points: [ p0 ],
-        other: a,
-        visited: false,
-        entry: false,
-        subject: false
-      };
-      a.other = b;
+      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
+      a.o = b;
       subject.push(a);
       clip.push(b);
-      a = {
-        point: p1,
-        points: [ p1 ],
-        other: null,
-        visited: false,
-        entry: false,
-        subject: true
-      };
-      b = {
-        point: p1,
-        points: [ p1 ],
-        other: a,
-        visited: false,
-        entry: true,
-        subject: false
-      };
-      a.other = b;
+      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
+      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
+      a.o = b;
       subject.push(a);
       clip.push(b);
     });
@@ -2309,36 +3259,37 @@ d3 = function() {
     d3_geo_clipPolygonLinkCircular(subject);
     d3_geo_clipPolygonLinkCircular(clip);
     if (!subject.length) return;
-    if (inside) for (var i = 1, e = !inside(clip[0].point), n = clip.length; i < n; ++i) {
-      clip[i].entry = e = !e;
+    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
+      clip[i].e = entry = !entry;
     }
-    var start = subject[0], current, points, point;
+    var start = subject[0], points, point;
     while (1) {
-      current = start;
-      while (current.visited) if ((current = current.next) === start) return;
-      points = current.points;
+      var current = start, isSubject = true;
+      while (current.v) if ((current = current.n) === start) return;
+      points = current.z;
       listener.lineStart();
       do {
-        current.visited = current.other.visited = true;
-        if (current.entry) {
-          if (current.subject) {
-            for (var i = 0; i < points.length; i++) listener.point((point = points[i])[0], point[1]);
+        current.v = current.o.v = true;
+        if (current.e) {
+          if (isSubject) {
+            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
           } else {
-            interpolate(current.point, current.next.point, 1, listener);
+            interpolate(current.x, current.n.x, 1, listener);
           }
-          current = current.next;
+          current = current.n;
         } else {
-          if (current.subject) {
-            points = current.prev.points;
-            for (var i = points.length; --i >= 0; ) listener.point((point = points[i])[0], point[1]);
+          if (isSubject) {
+            points = current.p.z;
+            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
           } else {
-            interpolate(current.point, current.prev.point, -1, listener);
+            interpolate(current.x, current.p.x, -1, listener);
           }
-          current = current.prev;
+          current = current.p;
         }
-        current = current.other;
-        points = current.points;
-      } while (!current.visited);
+        current = current.o;
+        points = current.z;
+        isSubject = !isSubject;
+      } while (!current.v);
       listener.lineEnd();
     }
   }
@@ -2346,16 +3297,24 @@ d3 = function() {
     if (!(n = array.length)) return;
     var n, i = 0, a = array[0], b;
     while (++i < n) {
-      a.next = b = array[i];
-      b.prev = a;
+      a.n = b = array[i];
+      b.p = a;
       a = b;
     }
-    a.next = b = array[0];
-    b.prev = a;
+    a.n = b = array[0];
+    b.p = a;
   }
-  function d3_geo_clip(pointVisible, clipLine, interpolate) {
-    return function(listener) {
-      var line = clipLine(listener);
+  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
+    this.x = point;
+    this.z = points;
+    this.o = other;
+    this.e = entry;
+    this.v = false;
+    this.n = this.p = null;
+  }
+  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
+    return function(rotate, listener) {
+      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
       var clip = {
         point: point,
         lineStart: lineStart,
@@ -2364,25 +3323,26 @@ d3 = function() {
           clip.point = pointRing;
           clip.lineStart = ringStart;
           clip.lineEnd = ringEnd;
-          invisible = false;
-          invisibleArea = visibleArea = 0;
           segments = [];
-          listener.polygonStart();
+          polygon = [];
         },
         polygonEnd: function() {
           clip.point = point;
           clip.lineStart = lineStart;
           clip.lineEnd = lineEnd;
           segments = d3.merge(segments);
+          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
           if (segments.length) {
-            d3_geo_clipPolygon(segments, d3_geo_clipSort, null, interpolate, listener);
-          } else if (visibleArea < -ε || invisible && invisibleArea < -ε) {
+            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
+            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
+          } else if (clipStartInside) {
+            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
             listener.lineStart();
             interpolate(null, null, 1, listener);
             listener.lineEnd();
           }
-          listener.polygonEnd();
-          segments = null;
+          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
+          segments = polygon = null;
         },
         sphere: function() {
           listener.polygonStart();
@@ -2393,10 +3353,12 @@ d3 = function() {
         }
       };
       function point(λ, φ) {
-        if (pointVisible(λ, φ)) listener.point(λ, φ);
+        var point = rotate(λ, φ);
+        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
       }
       function pointLine(λ, φ) {
-        line.point(λ, φ);
+        var point = rotate(λ, φ);
+        line.point(point[0], point[1]);
       }
       function lineStart() {
         clip.point = pointLine;
@@ -2406,11 +3368,12 @@ d3 = function() {
         clip.point = point;
         line.lineEnd();
       }
-      var segments, visibleArea, invisibleArea, invisible;
-      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), ring;
+      var segments;
+      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
       function pointRing(λ, φ) {
-        ringListener.point(λ, φ);
         ring.push([ λ, φ ]);
+        var point = rotate(λ, φ);
+        ringListener.point(point[0], point[1]);
       }
       function ringStart() {
         ringListener.lineStart();
@@ -2420,20 +3383,19 @@ d3 = function() {
         pointRing(ring[0][0], ring[0][1]);
         ringListener.lineEnd();
         var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
-        if (!n) {
-          invisible = true;
-          invisibleArea += d3_geo_clipAreaRing(ring, -1);
-          ring = null;
-          return;
-        }
+        ring.pop();
+        polygon.push(ring);
         ring = null;
+        if (!n) return;
         if (clean & 1) {
           segment = ringSegments[0];
-          visibleArea += d3_geo_clipAreaRing(segment, 1);
           var n = segment.length - 1, i = -1, point;
-          listener.lineStart();
-          while (++i < n) listener.point((point = segment[i])[0], point[1]);
-          listener.lineEnd();
+          if (n > 0) {
+            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
+            listener.lineStart();
+            while (++i < n) listener.point((point = segment[i])[0], point[1]);
+            listener.lineEnd();
+          }
           return;
         }
         if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
@@ -2466,26 +3428,10 @@ d3 = function() {
       }
     };
   }
-  function d3_geo_clipAreaRing(ring, invisible) {
-    if (!(n = ring.length)) return 0;
-    var n, i = 0, area = 0, p = ring[0], λ = p[0], φ = p[1], cosφ = Math.cos(φ), x0 = Math.atan2(invisible * Math.sin(λ) * cosφ, Math.sin(φ)), y0 = 1 - invisible * Math.cos(λ) * cosφ, x1 = x0, x, y;
-    while (++i < n) {
-      p = ring[i];
-      cosφ = Math.cos(φ = p[1]);
-      x = Math.atan2(invisible * Math.sin(λ = p[0]) * cosφ, Math.sin(φ));
-      y = 1 - invisible * Math.cos(λ) * cosφ;
-      if (Math.abs(y0 - 2) < ε && Math.abs(y - 2) < ε) continue;
-      if (Math.abs(y) < ε || Math.abs(y0) < ε) {} else if (Math.abs(Math.abs(x - x0) - π) < ε) {
-        if (y + y0 > 2) area += 4 * (x - x0);
-      } else if (Math.abs(y0 - 2) < ε) area += 4 * (x - x1); else area += ((3 * π + x - x0) % (2 * π) - π) * (y0 + y);
-      x1 = x0, x0 = x, y0 = y;
-    }
-    return area;
-  }
   function d3_geo_clipSort(a, b) {
-    return ((a = a.point)[0] < 0 ? a[1] - π / 2 - ε : π / 2 - a[1]) - ((b = b.point)[0] < 0 ? b[1] - π / 2 - ε : π / 2 - b[1]);
+    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
   }
-  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate);
+  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
   function d3_geo_clipAntimeridianLine(listener) {
     var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
     return {
@@ -2494,9 +3440,9 @@ d3 = function() {
         clean = 1;
       },
       point: function(λ1, φ1) {
-        var sλ1 = λ1 > 0 ? π : -π, dλ = Math.abs(λ1 - λ0);
-        if (Math.abs(dλ - π) < ε) {
-          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? π / 2 : -π / 2);
+        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
+        if (abs(dλ - π) < ε) {
+          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
           listener.point(sλ0, φ0);
           listener.lineEnd();
           listener.lineStart();
@@ -2504,8 +3450,8 @@ d3 = function() {
           listener.point(λ1, φ0);
           clean = 0;
         } else if (sλ0 !== sλ1 && dλ >= π) {
-          if (Math.abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
-          if (Math.abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
+          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
+          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
           φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
           listener.point(sλ0, φ0);
           listener.lineEnd();
@@ -2527,12 +3473,12 @@ d3 = function() {
   }
   function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
     var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
-    return Math.abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
+    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
   }
   function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
     var φ;
     if (from == null) {
-      φ = direction * π / 2;
+      φ = direction * halfπ;
       listener.point(-π, φ);
       listener.point(0, φ);
       listener.point(π, φ);
@@ -2542,8 +3488,8 @@ d3 = function() {
       listener.point(-π, -φ);
       listener.point(-π, 0);
       listener.point(-π, φ);
-    } else if (Math.abs(from[0] - to[0]) > ε) {
-      var s = (from[0] < to[0] ? 1 : -1) * π;
+    } else if (abs(from[0] - to[0]) > ε) {
+      var s = from[0] < to[0] ? π : -π;
       φ = direction * s / 2;
       listener.point(-s, φ);
       listener.point(0, φ);
@@ -2552,9 +3498,38 @@ d3 = function() {
       listener.point(to[0], to[1]);
     }
   }
+  function d3_geo_pointInPolygon(point, polygon) {
+    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
+    d3_geo_areaRingSum.reset();
+    for (var i = 0, n = polygon.length; i < n; ++i) {
+      var ring = polygon[i], m = ring.length;
+      if (!m) continue;
+      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
+      while (true) {
+        if (j === m) j = 0;
+        point = ring[j];
+        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
+        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
+        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
+        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
+          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
+          d3_geo_cartesianNormalize(arc);
+          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
+          d3_geo_cartesianNormalize(intersection);
+          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
+          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
+            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
+          }
+        }
+        if (!j++) break;
+        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
+      }
+    }
+    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
+  }
   function d3_geo_clipCircle(radius) {
-    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = Math.abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
-    return d3_geo_clip(visible, clipLine, interpolate);
+    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
+    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
     function visible(λ, φ) {
       return Math.cos(λ) * Math.cos(φ) > cr;
     }
@@ -2633,9 +3608,9 @@ d3 = function() {
       if (!two) return q;
       var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
       if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
-      var δλ = λ1 - λ0, polar = Math.abs(δλ - π) < ε, meridian = polar || δλ < ε;
+      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
       if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
-      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (Math.abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
+      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
         var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
         d3_geo_cartesianAdd(q1, A);
         return [ q, d3_geo_spherical(q1) ];
@@ -2648,10 +3623,81 @@ d3 = function() {
       return code;
     }
   }
-  var d3_geo_clipViewMAX = 1e9;
-  function d3_geo_clipView(x0, y0, x1, y1) {
+  function d3_geom_clipLine(x0, y0, x1, y1) {
+    return function(line) {
+      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
+      r = x0 - ax;
+      if (!dx && r > 0) return;
+      r /= dx;
+      if (dx < 0) {
+        if (r < t0) return;
+        if (r < t1) t1 = r;
+      } else if (dx > 0) {
+        if (r > t1) return;
+        if (r > t0) t0 = r;
+      }
+      r = x1 - ax;
+      if (!dx && r < 0) return;
+      r /= dx;
+      if (dx < 0) {
+        if (r > t1) return;
+        if (r > t0) t0 = r;
+      } else if (dx > 0) {
+        if (r < t0) return;
+        if (r < t1) t1 = r;
+      }
+      r = y0 - ay;
+      if (!dy && r > 0) return;
+      r /= dy;
+      if (dy < 0) {
+        if (r < t0) return;
+        if (r < t1) t1 = r;
+      } else if (dy > 0) {
+        if (r > t1) return;
+        if (r > t0) t0 = r;
+      }
+      r = y1 - ay;
+      if (!dy && r < 0) return;
+      r /= dy;
+      if (dy < 0) {
+        if (r > t1) return;
+        if (r > t0) t0 = r;
+      } else if (dy > 0) {
+        if (r < t0) return;
+        if (r < t1) t1 = r;
+      }
+      if (t0 > 0) line.a = {
+        x: ax + t0 * dx,
+        y: ay + t0 * dy
+      };
+      if (t1 < 1) line.b = {
+        x: ax + t1 * dx,
+        y: ay + t1 * dy
+      };
+      return line;
+    };
+  }
+  var d3_geo_clipExtentMAX = 1e9;
+  d3.geo.clipExtent = function() {
+    var x0, y0, x1, y1, stream, clip, clipExtent = {
+      stream: function(output) {
+        if (stream) stream.valid = false;
+        stream = clip(output);
+        stream.valid = true;
+        return stream;
+      },
+      extent: function(_) {
+        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
+        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
+        if (stream) stream.valid = false, stream = null;
+        return clipExtent;
+      }
+    };
+    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
+  };
+  function d3_geo_clipExtent(x0, y0, x1, y1) {
     return function(listener) {
-      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), segments, polygon, ring;
+      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
       var clip = {
         point: point,
         lineStart: lineStart,
@@ -2660,43 +3706,42 @@ d3 = function() {
           listener = bufferListener;
           segments = [];
           polygon = [];
+          clean = true;
         },
         polygonEnd: function() {
           listener = listener_;
-          if ((segments = d3.merge(segments)).length) {
+          segments = d3.merge(segments);
+          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
+          if (inside || visible) {
             listener.polygonStart();
-            d3_geo_clipPolygon(segments, compare, inside, interpolate, listener);
+            if (inside) {
+              listener.lineStart();
+              interpolate(null, null, 1, listener);
+              listener.lineEnd();
+            }
+            if (visible) {
+              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
+            }
             listener.polygonEnd();
-          } else if (insidePolygon([ x0, y0 ])) {
-            listener.polygonStart(), listener.lineStart();
-            interpolate(null, null, 1, listener);
-            listener.lineEnd(), listener.polygonEnd();
           }
           segments = polygon = ring = null;
         }
       };
-      function inside(point) {
-        var a = corner(point, -1), i = insidePolygon([ a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0 ]);
-        return i;
-      }
       function insidePolygon(p) {
         var wn = 0, n = polygon.length, y = p[1];
         for (var i = 0; i < n; ++i) {
-          for (var j = 1, v = polygon[i], m = v.length, a = v[0]; j < m; ++j) {
+          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
             b = v[j];
             if (a[1] <= y) {
-              if (b[1] > y && isLeft(a, b, p) > 0) ++wn;
+              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
             } else {
-              if (b[1] <= y && isLeft(a, b, p) < 0) --wn;
+              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
             }
             a = b;
           }
         }
         return wn !== 0;
       }
-      function isLeft(a, b, c) {
-        return (b[0] - a[0]) * (c[1] - a[1]) - (c[0] - a[0]) * (b[1] - a[1]);
-      }
       function interpolate(from, to, direction, listener) {
         var a = 0, a1 = 0;
         if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
@@ -2707,13 +3752,13 @@ d3 = function() {
           listener.point(to[0], to[1]);
         }
       }
-      function visible(x, y) {
+      function pointVisible(x, y) {
         return x0 <= x && x <= x1 && y0 <= y && y <= y1;
       }
       function point(x, y) {
-        if (visible(x, y)) listener.point(x, y);
+        if (pointVisible(x, y)) listener.point(x, y);
       }
-      var x__, y__, v__, x_, y_, v_, first;
+      var x__, y__, v__, x_, y_, v_, first, clean;
       function lineStart() {
         clip.point = linePoint;
         if (polygon) polygon.push(ring = []);
@@ -2731,9 +3776,9 @@ d3 = function() {
         if (v_) listener.lineEnd();
       }
       function linePoint(x, y) {
-        x = Math.max(-d3_geo_clipViewMAX, Math.min(d3_geo_clipViewMAX, x));
-        y = Math.max(-d3_geo_clipViewMAX, Math.min(d3_geo_clipViewMAX, y));
-        var v = visible(x, y);
+        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
+        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
+        var v = pointVisible(x, y);
         if (polygon) ring.push([ x, y ]);
         if (first) {
           x__ = x, y__ = y, v__ = v;
@@ -2744,17 +3789,28 @@ d3 = function() {
           }
         } else {
           if (v && v_) listener.point(x, y); else {
-            var a = [ x_, y_ ], b = [ x, y ];
-            if (clipLine(a, b)) {
+            var l = {
+              a: {
+                x: x_,
+                y: y_
+              },
+              b: {
+                x: x,
+                y: y
+              }
+            };
+            if (clipLine(l)) {
               if (!v_) {
                 listener.lineStart();
-                listener.point(a[0], a[1]);
+                listener.point(l.a.x, l.a.y);
               }
-              listener.point(b[0], b[1]);
+              listener.point(l.b.x, l.b.y);
               if (!v) listener.lineEnd();
-            } else {
+              clean = false;
+            } else if (v) {
               listener.lineStart();
               listener.point(x, y);
+              clean = false;
             }
           }
         }
@@ -2763,64 +3819,325 @@ d3 = function() {
       return clip;
     };
     function corner(p, direction) {
-      return Math.abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : Math.abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : Math.abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
+      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
     }
     function compare(a, b) {
-      return comparePoints(a.point, b.point);
+      return comparePoints(a.x, b.x);
     }
     function comparePoints(a, b) {
       var ca = corner(a, 1), cb = corner(b, 1);
       return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
     }
-    function clipLine(a, b) {
-      var dx = b[0] - a[0], dy = b[1] - a[1], t = [ 0, 1 ];
-      if (Math.abs(dx) < ε && Math.abs(dy) < ε) return x0 <= a[0] && a[0] <= x1 && y0 <= a[1] && a[1] <= y1;
-      if (d3_geo_clipViewT(x0 - a[0], dx, t) && d3_geo_clipViewT(a[0] - x1, -dx, t) && d3_geo_clipViewT(y0 - a[1], dy, t) && d3_geo_clipViewT(a[1] - y1, -dy, t)) {
-        if (t[1] < 1) {
-          b[0] = a[0] + t[1] * dx;
-          b[1] = a[1] + t[1] * dy;
+  }
+  function d3_geo_conic(projectAt) {
+    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
+    p.parallels = function(_) {
+      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
+      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
+    };
+    return p;
+  }
+  function d3_geo_conicEqualArea(φ0, φ1) {
+    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
+    function forward(λ, φ) {
+      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
+      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
+    }
+    forward.invert = function(x, y) {
+      var ρ0_y = ρ0 - y;
+      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
+    };
+    return forward;
+  }
+  (d3.geo.conicEqualArea = function() {
+    return d3_geo_conic(d3_geo_conicEqualArea);
+  }).raw = d3_geo_conicEqualArea;
+  d3.geo.albers = function() {
+    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
+  };
+  d3.geo.albersUsa = function() {
+    var lower48 = d3.geo.albers();
+    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
+    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
+    var point, pointStream = {
+      point: function(x, y) {
+        point = [ x, y ];
+      }
+    }, lower48Point, alaskaPoint, hawaiiPoint;
+    function albersUsa(coordinates) {
+      var x = coordinates[0], y = coordinates[1];
+      point = null;
+      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
+      return point;
+    }
+    albersUsa.invert = function(coordinates) {
+      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
+      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
+    };
+    albersUsa.stream = function(stream) {
+      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
+      return {
+        point: function(x, y) {
+          lower48Stream.point(x, y);
+          alaskaStream.point(x, y);
+          hawaiiStream.point(x, y);
+        },
+        sphere: function() {
+          lower48Stream.sphere();
+          alaskaStream.sphere();
+          hawaiiStream.sphere();
+        },
+        lineStart: function() {
+          lower48Stream.lineStart();
+          alaskaStream.lineStart();
+          hawaiiStream.lineStart();
+        },
+        lineEnd: function() {
+          lower48Stream.lineEnd();
+          alaskaStream.lineEnd();
+          hawaiiStream.lineEnd();
+        },
+        polygonStart: function() {
+          lower48Stream.polygonStart();
+          alaskaStream.polygonStart();
+          hawaiiStream.polygonStart();
+        },
+        polygonEnd: function() {
+          lower48Stream.polygonEnd();
+          alaskaStream.polygonEnd();
+          hawaiiStream.polygonEnd();
         }
-        if (t[0] > 0) {
-          a[0] += t[0] * dx;
-          a[1] += t[0] * dy;
+      };
+    };
+    albersUsa.precision = function(_) {
+      if (!arguments.length) return lower48.precision();
+      lower48.precision(_);
+      alaska.precision(_);
+      hawaii.precision(_);
+      return albersUsa;
+    };
+    albersUsa.scale = function(_) {
+      if (!arguments.length) return lower48.scale();
+      lower48.scale(_);
+      alaska.scale(_ * .35);
+      hawaii.scale(_);
+      return albersUsa.translate(lower48.translate());
+    };
+    albersUsa.translate = function(_) {
+      if (!arguments.length) return lower48.translate();
+      var k = lower48.scale(), x = +_[0], y = +_[1];
+      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
+      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
+      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
+      return albersUsa;
+    };
+    return albersUsa.scale(1070);
+  };
+  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
+    point: d3_noop,
+    lineStart: d3_noop,
+    lineEnd: d3_noop,
+    polygonStart: function() {
+      d3_geo_pathAreaPolygon = 0;
+      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
+    },
+    polygonEnd: function() {
+      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
+      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
+    }
+  };
+  function d3_geo_pathAreaRingStart() {
+    var x00, y00, x0, y0;
+    d3_geo_pathArea.point = function(x, y) {
+      d3_geo_pathArea.point = nextPoint;
+      x00 = x0 = x, y00 = y0 = y;
+    };
+    function nextPoint(x, y) {
+      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
+      x0 = x, y0 = y;
+    }
+    d3_geo_pathArea.lineEnd = function() {
+      nextPoint(x00, y00);
+    };
+  }
+  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
+  var d3_geo_pathBounds = {
+    point: d3_geo_pathBoundsPoint,
+    lineStart: d3_noop,
+    lineEnd: d3_noop,
+    polygonStart: d3_noop,
+    polygonEnd: d3_noop
+  };
+  function d3_geo_pathBoundsPoint(x, y) {
+    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
+    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
+    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
+    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
+  }
+  function d3_geo_pathBuffer() {
+    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
+    var stream = {
+      point: point,
+      lineStart: function() {
+        stream.point = pointLineStart;
+      },
+      lineEnd: lineEnd,
+      polygonStart: function() {
+        stream.lineEnd = lineEndPolygon;
+      },
+      polygonEnd: function() {
+        stream.lineEnd = lineEnd;
+        stream.point = point;
+      },
+      pointRadius: function(_) {
+        pointCircle = d3_geo_pathBufferCircle(_);
+        return stream;
+      },
+      result: function() {
+        if (buffer.length) {
+          var result = buffer.join("");
+          buffer = [];
+          return result;
         }
-        return true;
       }
-      return false;
+    };
+    function point(x, y) {
+      buffer.push("M", x, ",", y, pointCircle);
+    }
+    function pointLineStart(x, y) {
+      buffer.push("M", x, ",", y);
+      stream.point = pointLine;
+    }
+    function pointLine(x, y) {
+      buffer.push("L", x, ",", y);
     }
+    function lineEnd() {
+      stream.point = point;
+    }
+    function lineEndPolygon() {
+      buffer.push("Z");
+    }
+    return stream;
   }
-  function d3_geo_clipViewT(num, denominator, t) {
-    if (Math.abs(denominator) < ε) return num <= 0;
-    var u = num / denominator;
-    if (denominator > 0) {
-      if (u > t[1]) return false;
-      if (u > t[0]) t[0] = u;
-    } else {
-      if (u < t[0]) return false;
-      if (u < t[1]) t[1] = u;
+  function d3_geo_pathBufferCircle(radius) {
+    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
+  }
+  var d3_geo_pathCentroid = {
+    point: d3_geo_pathCentroidPoint,
+    lineStart: d3_geo_pathCentroidLineStart,
+    lineEnd: d3_geo_pathCentroidLineEnd,
+    polygonStart: function() {
+      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
+    },
+    polygonEnd: function() {
+      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
+      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
+      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
     }
-    return true;
+  };
+  function d3_geo_pathCentroidPoint(x, y) {
+    d3_geo_centroidX0 += x;
+    d3_geo_centroidY0 += y;
+    ++d3_geo_centroidZ0;
   }
-  function d3_geo_compose(a, b) {
-    function compose(x, y) {
-      return x = a(x, y), b(x[0], x[1]);
+  function d3_geo_pathCentroidLineStart() {
+    var x0, y0;
+    d3_geo_pathCentroid.point = function(x, y) {
+      d3_geo_pathCentroid.point = nextPoint;
+      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
+    };
+    function nextPoint(x, y) {
+      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
+      d3_geo_centroidX1 += z * (x0 + x) / 2;
+      d3_geo_centroidY1 += z * (y0 + y) / 2;
+      d3_geo_centroidZ1 += z;
+      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
     }
-    if (a.invert && b.invert) compose.invert = function(x, y) {
-      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
+  }
+  function d3_geo_pathCentroidLineEnd() {
+    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
+  }
+  function d3_geo_pathCentroidRingStart() {
+    var x00, y00, x0, y0;
+    d3_geo_pathCentroid.point = function(x, y) {
+      d3_geo_pathCentroid.point = nextPoint;
+      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
+    };
+    function nextPoint(x, y) {
+      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
+      d3_geo_centroidX1 += z * (x0 + x) / 2;
+      d3_geo_centroidY1 += z * (y0 + y) / 2;
+      d3_geo_centroidZ1 += z;
+      z = y0 * x - x0 * y;
+      d3_geo_centroidX2 += z * (x0 + x);
+      d3_geo_centroidY2 += z * (y0 + y);
+      d3_geo_centroidZ2 += z * 3;
+      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
+    }
+    d3_geo_pathCentroid.lineEnd = function() {
+      nextPoint(x00, y00);
     };
-    return compose;
+  }
+  function d3_geo_pathContext(context) {
+    var pointRadius = 4.5;
+    var stream = {
+      point: point,
+      lineStart: function() {
+        stream.point = pointLineStart;
+      },
+      lineEnd: lineEnd,
+      polygonStart: function() {
+        stream.lineEnd = lineEndPolygon;
+      },
+      polygonEnd: function() {
+        stream.lineEnd = lineEnd;
+        stream.point = point;
+      },
+      pointRadius: function(_) {
+        pointRadius = _;
+        return stream;
+      },
+      result: d3_noop
+    };
+    function point(x, y) {
+      context.moveTo(x + pointRadius, y);
+      context.arc(x, y, pointRadius, 0, τ);
+    }
+    function pointLineStart(x, y) {
+      context.moveTo(x, y);
+      stream.point = pointLine;
+    }
+    function pointLine(x, y) {
+      context.lineTo(x, y);
+    }
+    function lineEnd() {
+      stream.point = point;
+    }
+    function lineEndPolygon() {
+      context.closePath();
+    }
+    return stream;
   }
   function d3_geo_resample(project) {
-    var δ2 = .5, maxDepth = 16;
+    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
     function resample(stream) {
-      var λ0, x0, y0, a0, b0, c0;
+      return (maxDepth ? resampleRecursive : resampleNone)(stream);
+    }
+    function resampleNone(stream) {
+      return d3_geo_transformPoint(stream, function(x, y) {
+        x = project(x, y);
+        stream.point(x[0], x[1]);
+      });
+    }
+    function resampleRecursive(stream) {
+      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
       var resample = {
         point: point,
         lineStart: lineStart,
         lineEnd: lineEnd,
         polygonStart: function() {
           stream.polygonStart();
-          resample.lineStart = polygonLineStart;
+          resample.lineStart = ringStart;
         },
         polygonEnd: function() {
           stream.polygonEnd();
@@ -2845,26 +4162,27 @@ d3 = function() {
         resample.point = point;
         stream.lineEnd();
       }
-      function polygonLineStart() {
-        var λ00, φ00, x00, y00, a00, b00, c00;
+      function ringStart() {
         lineStart();
-        resample.point = function(λ, φ) {
-          linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
-          resample.point = linePoint;
-        };
-        resample.lineEnd = function() {
-          resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
-          resample.lineEnd = lineEnd;
-          lineEnd();
-        };
+        resample.point = ringPoint;
+        resample.lineEnd = ringEnd;
+      }
+      function ringPoint(λ, φ) {
+        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
+        resample.point = linePoint;
+      }
+      function ringEnd() {
+        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
+        resample.lineEnd = lineEnd;
+        lineEnd();
       }
       return resample;
     }
     function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
       var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
       if (d2 > 4 * δ2 && depth--) {
-        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = Math.abs(Math.abs(c) - 1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
-        if (dz * dz / d2 > δ2 || Math.abs((dx * dx2 + dy * dy2) / d2 - .5) > .3) {
+        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
+        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
           resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
           stream.point(x2, y2);
           resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
@@ -2878,6 +4196,113 @@ d3 = function() {
     };
     return resample;
   }
+  d3.geo.path = function() {
+    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
+    function path(object) {
+      if (object) {
+        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
+        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
+        d3.geo.stream(object, cacheStream);
+      }
+      return contextStream.result();
+    }
+    path.area = function(object) {
+      d3_geo_pathAreaSum = 0;
+      d3.geo.stream(object, projectStream(d3_geo_pathArea));
+      return d3_geo_pathAreaSum;
+    };
+    path.centroid = function(object) {
+      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
+      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
+      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
+    };
+    path.bounds = function(object) {
+      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
+      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
+      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
+    };
+    path.projection = function(_) {
+      if (!arguments.length) return projection;
+      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
+      return reset();
+    };
+    path.context = function(_) {
+      if (!arguments.length) return context;
+      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
+      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
+      return reset();
+    };
+    path.pointRadius = function(_) {
+      if (!arguments.length) return pointRadius;
+      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
+      return path;
+    };
+    function reset() {
+      cacheStream = null;
+      return path;
+    }
+    return path.projection(d3.geo.albersUsa()).context(null);
+  };
+  function d3_geo_pathProjectStream(project) {
+    var resample = d3_geo_resample(function(x, y) {
+      return project([ x * d3_degrees, y * d3_degrees ]);
+    });
+    return function(stream) {
+      return d3_geo_projectionRadians(resample(stream));
+    };
+  }
+  d3.geo.transform = function(methods) {
+    return {
+      stream: function(stream) {
+        var transform = new d3_geo_transform(stream);
+        for (var k in methods) transform[k] = methods[k];
+        return transform;
+      }
+    };
+  };
+  function d3_geo_transform(stream) {
+    this.stream = stream;
+  }
+  d3_geo_transform.prototype = {
+    point: function(x, y) {
+      this.stream.point(x, y);
+    },
+    sphere: function() {
+      this.stream.sphere();
+    },
+    lineStart: function() {
+      this.stream.lineStart();
+    },
+    lineEnd: function() {
+      this.stream.lineEnd();
+    },
+    polygonStart: function() {
+      this.stream.polygonStart();
+    },
+    polygonEnd: function() {
+      this.stream.polygonEnd();
+    }
+  };
+  function d3_geo_transformPoint(stream, point) {
+    return {
+      point: point,
+      sphere: function() {
+        stream.sphere();
+      },
+      lineStart: function() {
+        stream.lineStart();
+      },
+      lineEnd: function() {
+        stream.lineEnd();
+      },
+      polygonStart: function() {
+        stream.polygonStart();
+      },
+      polygonEnd: function() {
+        stream.polygonEnd();
+      }
+    };
+  }
   d3.geo.projection = d3_geo_projection;
   d3.geo.projectionMutator = d3_geo_projectionMutator;
   function d3_geo_projection(project) {
@@ -2889,7 +4314,7 @@ d3 = function() {
     var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
       x = project(x, y);
       return [ x[0] * k + δx, δy - x[1] * k ];
-    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null;
+    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
     function projection(point) {
       point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
       return [ point[0] * k + δx, δy - point[1] * k ];
@@ -2898,19 +4323,22 @@ d3 = function() {
       point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
       return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
     }
-    projection.stream = function(stream) {
-      return d3_geo_projectionRadiansRotate(rotate, preclip(projectResample(postclip(stream))));
+    projection.stream = function(output) {
+      if (stream) stream.valid = false;
+      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
+      stream.valid = true;
+      return stream;
     };
     projection.clipAngle = function(_) {
       if (!arguments.length) return clipAngle;
       preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
-      return projection;
+      return invalidate();
     };
     projection.clipExtent = function(_) {
       if (!arguments.length) return clipExtent;
       clipExtent = _;
-      postclip = _ == null ? d3_identity : d3_geo_clipView(_[0][0], _[0][1], _[1][0], _[1][1]);
-      return projection;
+      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
+      return invalidate();
     };
     projection.scale = function(_) {
       if (!arguments.length) return k;
@@ -2942,6 +4370,10 @@ d3 = function() {
       var center = project(λ, φ);
       δx = x - center[0] * k;
       δy = y + center[1] * k;
+      return invalidate();
+    }
+    function invalidate() {
+      if (stream) stream.valid = false, stream = null;
       return projection;
     }
     return function() {
@@ -2950,28 +4382,10 @@ d3 = function() {
       return reset();
     };
   }
-  function d3_geo_projectionRadiansRotate(rotate, stream) {
-    return {
-      point: function(x, y) {
-        y = rotate(x * d3_radians, y * d3_radians), x = y[0];
-        stream.point(x > π ? x - 2 * π : x < -π ? x + 2 * π : x, y[1]);
-      },
-      sphere: function() {
-        stream.sphere();
-      },
-      lineStart: function() {
-        stream.lineStart();
-      },
-      lineEnd: function() {
-        stream.lineEnd();
-      },
-      polygonStart: function() {
-        stream.polygonStart();
-      },
-      polygonEnd: function() {
-        stream.polygonEnd();
-      }
-    };
+  function d3_geo_projectionRadians(stream) {
+    return d3_geo_transformPoint(stream, function(x, y) {
+      stream.point(x * d3_radians, y * d3_radians);
+    });
   }
   function d3_geo_equirectangular(λ, φ) {
     return [ λ, φ ];
@@ -2991,12 +4405,16 @@ d3 = function() {
     };
     return forward;
   };
+  function d3_geo_identityRotation(λ, φ) {
+    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
+  }
+  d3_geo_identityRotation.invert = d3_geo_equirectangular;
   function d3_geo_rotation(δλ, δφ, δγ) {
-    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_equirectangular;
+    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
   }
   function d3_geo_forwardRotationλ(δλ) {
     return function(λ, φ) {
-      return λ += δλ, [ λ > π ? λ - 2 * π : λ < -π ? λ + 2 * π : λ, φ ];
+      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
     };
   }
   function d3_geo_rotationλ(δλ) {
@@ -3008,11 +4426,11 @@ d3 = function() {
     var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
     function rotation(λ, φ) {
       var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
-      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), Math.asin(Math.max(-1, Math.min(1, k * cosδγ + y * sinδγ))) ];
+      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
     }
     rotation.invert = function(λ, φ) {
       var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
-      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), Math.asin(Math.max(-1, Math.min(1, k * cosδφ - x * sinδφ))) ];
+      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
     };
     return rotation;
   }
@@ -3051,16 +4469,16 @@ d3 = function() {
   function d3_geo_circleInterpolate(radius, precision) {
     var cr = Math.cos(radius), sr = Math.sin(radius);
     return function(from, to, direction, listener) {
+      var step = direction * precision;
       if (from != null) {
         from = d3_geo_circleAngle(cr, from);
         to = d3_geo_circleAngle(cr, to);
-        if (direction > 0 ? from < to : from > to) from += direction * 2 * π;
+        if (direction > 0 ? from < to : from > to) from += direction * τ;
       } else {
-        from = radius + direction * 2 * π;
-        to = radius;
+        from = radius + direction * τ;
+        to = radius - .5 * step;
       }
-      var point;
-      for (var step = direction * precision, t = from; direction > 0 ? t > to : t < to; t -= step) {
+      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
         listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
       }
     };
@@ -3086,9 +4504,9 @@ d3 = function() {
     }
     function lines() {
       return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
-        return Math.abs(x % DX) > ε;
+        return abs(x % DX) > ε;
       }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
-        return Math.abs(y % DY) > ε;
+        return abs(y % DY) > ε;
       }).map(y));
     }
     graticule.lines = function() {
@@ -3236,329 +4654,11 @@ d3 = function() {
       d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
     };
     function nextPoint(λ, φ) {
-      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = Math.abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
+      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
       d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
       λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
     }
   }
-  function d3_geo_conic(projectAt) {
-    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
-    p.parallels = function(_) {
-      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
-      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
-    };
-    return p;
-  }
-  function d3_geo_conicEqualArea(φ0, φ1) {
-    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
-    function forward(λ, φ) {
-      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
-      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
-    }
-    forward.invert = function(x, y) {
-      var ρ0_y = ρ0 - y;
-      return [ Math.atan2(x, ρ0_y) / n, Math.asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
-    };
-    return forward;
-  }
-  (d3.geo.conicEqualArea = function() {
-    return d3_geo_conic(d3_geo_conicEqualArea);
-  }).raw = d3_geo_conicEqualArea;
-  d3.geo.albersUsa = function() {
-    var lower48 = d3.geo.conicEqualArea().rotate([ 98, 0 ]).center([ 0, 38 ]).parallels([ 29.5, 45.5 ]);
-    var alaska = d3.geo.conicEqualArea().rotate([ 160, 0 ]).center([ 0, 60 ]).parallels([ 55, 65 ]);
-    var hawaii = d3.geo.conicEqualArea().rotate([ 160, 0 ]).center([ 0, 20 ]).parallels([ 8, 18 ]);
-    var puertoRico = d3.geo.conicEqualArea().rotate([ 60, 0 ]).center([ 0, 10 ]).parallels([ 8, 18 ]);
-    var alaskaInvert, hawaiiInvert, puertoRicoInvert;
-    function albersUsa(coordinates) {
-      return projection(coordinates)(coordinates);
-    }
-    function projection(point) {
-      var lon = point[0], lat = point[1];
-      return lat > 50 ? alaska : lon < -140 ? hawaii : lat < 21 ? puertoRico : lower48;
-    }
-    albersUsa.invert = function(coordinates) {
-      return alaskaInvert(coordinates) || hawaiiInvert(coordinates) || puertoRicoInvert(coordinates) || lower48.invert(coordinates);
-    };
-    albersUsa.scale = function(x) {
-      if (!arguments.length) return lower48.scale();
-      lower48.scale(x);
-      alaska.scale(x * .6);
-      hawaii.scale(x);
-      puertoRico.scale(x * 1.5);
-      return albersUsa.translate(lower48.translate());
-    };
-    albersUsa.translate = function(x) {
-      if (!arguments.length) return lower48.translate();
-      var dz = lower48.scale(), dx = x[0], dy = x[1];
-      lower48.translate(x);
-      alaska.translate([ dx - .4 * dz, dy + .17 * dz ]);
-      hawaii.translate([ dx - .19 * dz, dy + .2 * dz ]);
-      puertoRico.translate([ dx + .58 * dz, dy + .43 * dz ]);
-      alaskaInvert = d3_geo_albersUsaInvert(alaska, [ [ -180, 50 ], [ -130, 72 ] ]);
-      hawaiiInvert = d3_geo_albersUsaInvert(hawaii, [ [ -164, 18 ], [ -154, 24 ] ]);
-      puertoRicoInvert = d3_geo_albersUsaInvert(puertoRico, [ [ -67.5, 17.5 ], [ -65, 19 ] ]);
-      return albersUsa;
-    };
-    return albersUsa.scale(1e3);
-  };
-  function d3_geo_albersUsaInvert(projection, extent) {
-    var a = projection(extent[0]), b = projection([ .5 * (extent[0][0] + extent[1][0]), extent[0][1] ]), c = projection([ extent[1][0], extent[0][1] ]), d = projection(extent[1]);
-    var dya = b[1] - a[1], dxa = b[0] - a[0], dyb = c[1] - b[1], dxb = c[0] - b[0];
-    var ma = dya / dxa, mb = dyb / dxb;
-    var cx = .5 * (ma * mb * (a[1] - c[1]) + mb * (a[0] + b[0]) - ma * (b[0] + c[0])) / (mb - ma), cy = (.5 * (a[0] + b[0]) - cx) / ma + .5 * (a[1] + b[1]);
-    var dx0 = d[0] - cx, dy0 = d[1] - cy, dx1 = a[0] - cx, dy1 = a[1] - cy, r0 = dx0 * dx0 + dy0 * dy0, r1 = dx1 * dx1 + dy1 * dy1;
-    var a0 = Math.atan2(dy0, dx0), a1 = Math.atan2(dy1, dx1);
-    return function(coordinates) {
-      var dx = coordinates[0] - cx, dy = coordinates[1] - cy, r = dx * dx + dy * dy, a = Math.atan2(dy, dx);
-      if (r0 < r && r < r1 && a0 < a && a < a1) return projection.invert(coordinates);
-    };
-  }
-  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
-    point: d3_noop,
-    lineStart: d3_noop,
-    lineEnd: d3_noop,
-    polygonStart: function() {
-      d3_geo_pathAreaPolygon = 0;
-      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
-    },
-    polygonEnd: function() {
-      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
-      d3_geo_pathAreaSum += Math.abs(d3_geo_pathAreaPolygon / 2);
-    }
-  };
-  function d3_geo_pathAreaRingStart() {
-    var x00, y00, x0, y0;
-    d3_geo_pathArea.point = function(x, y) {
-      d3_geo_pathArea.point = nextPoint;
-      x00 = x0 = x, y00 = y0 = y;
-    };
-    function nextPoint(x, y) {
-      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
-      x0 = x, y0 = y;
-    }
-    d3_geo_pathArea.lineEnd = function() {
-      nextPoint(x00, y00);
-    };
-  }
-  function d3_geo_pathBuffer() {
-    var pointCircle = d3_geo_pathCircle(4.5), buffer = [];
-    var stream = {
-      point: point,
-      lineStart: function() {
-        stream.point = pointLineStart;
-      },
-      lineEnd: lineEnd,
-      polygonStart: function() {
-        stream.lineEnd = lineEndPolygon;
-      },
-      polygonEnd: function() {
-        stream.lineEnd = lineEnd;
-        stream.point = point;
-      },
-      pointRadius: function(_) {
-        pointCircle = d3_geo_pathCircle(_);
-        return stream;
-      },
-      result: function() {
-        if (buffer.length) {
-          var result = buffer.join("");
-          buffer = [];
-          return result;
-        }
-      }
-    };
-    function point(x, y) {
-      buffer.push("M", x, ",", y, pointCircle);
-    }
-    function pointLineStart(x, y) {
-      buffer.push("M", x, ",", y);
-      stream.point = pointLine;
-    }
-    function pointLine(x, y) {
-      buffer.push("L", x, ",", y);
-    }
-    function lineEnd() {
-      stream.point = point;
-    }
-    function lineEndPolygon() {
-      buffer.push("Z");
-    }
-    return stream;
-  }
-  var d3_geo_pathCentroid = {
-    point: d3_geo_pathCentroidPoint,
-    lineStart: d3_geo_pathCentroidLineStart,
-    lineEnd: d3_geo_pathCentroidLineEnd,
-    polygonStart: function() {
-      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
-    },
-    polygonEnd: function() {
-      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
-      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
-      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
-    }
-  };
-  function d3_geo_pathCentroidPoint(x, y) {
-    if (d3_geo_centroidDimension) return;
-    d3_geo_centroidX += x;
-    d3_geo_centroidY += y;
-    ++d3_geo_centroidZ;
-  }
-  function d3_geo_pathCentroidLineStart() {
-    var x0, y0;
-    if (d3_geo_centroidDimension !== 1) {
-      if (d3_geo_centroidDimension < 1) {
-        d3_geo_centroidDimension = 1;
-        d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
-      } else return;
-    }
-    d3_geo_pathCentroid.point = function(x, y) {
-      d3_geo_pathCentroid.point = nextPoint;
-      x0 = x, y0 = y;
-    };
-    function nextPoint(x, y) {
-      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
-      d3_geo_centroidX += z * (x0 + x) / 2;
-      d3_geo_centroidY += z * (y0 + y) / 2;
-      d3_geo_centroidZ += z;
-      x0 = x, y0 = y;
-    }
-  }
-  function d3_geo_pathCentroidLineEnd() {
-    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
-  }
-  function d3_geo_pathCentroidRingStart() {
-    var x00, y00, x0, y0;
-    if (d3_geo_centroidDimension < 2) {
-      d3_geo_centroidDimension = 2;
-      d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
-    }
-    d3_geo_pathCentroid.point = function(x, y) {
-      d3_geo_pathCentroid.point = nextPoint;
-      x00 = x0 = x, y00 = y0 = y;
-    };
-    function nextPoint(x, y) {
-      var z = y0 * x - x0 * y;
-      d3_geo_centroidX += z * (x0 + x);
-      d3_geo_centroidY += z * (y0 + y);
-      d3_geo_centroidZ += z * 3;
-      x0 = x, y0 = y;
-    }
-    d3_geo_pathCentroid.lineEnd = function() {
-      nextPoint(x00, y00);
-    };
-  }
-  function d3_geo_pathContext(context) {
-    var pointRadius = 4.5;
-    var stream = {
-      point: point,
-      lineStart: function() {
-        stream.point = pointLineStart;
-      },
-      lineEnd: lineEnd,
-      polygonStart: function() {
-        stream.lineEnd = lineEndPolygon;
-      },
-      polygonEnd: function() {
-        stream.lineEnd = lineEnd;
-        stream.point = point;
-      },
-      pointRadius: function(_) {
-        pointRadius = _;
-        return stream;
-      },
-      result: d3_noop
-    };
-    function point(x, y) {
-      context.moveTo(x, y);
-      context.arc(x, y, pointRadius, 0, 2 * π);
-    }
-    function pointLineStart(x, y) {
-      context.moveTo(x, y);
-      stream.point = pointLine;
-    }
-    function pointLine(x, y) {
-      context.lineTo(x, y);
-    }
-    function lineEnd() {
-      stream.point = point;
-    }
-    function lineEndPolygon() {
-      context.closePath();
-    }
-    return stream;
-  }
-  d3.geo.path = function() {
-    var pointRadius = 4.5, projection, context, projectStream, contextStream;
-    function path(object) {
-      if (object) d3.geo.stream(object, projectStream(contextStream.pointRadius(typeof pointRadius === "function" ? +pointRadius.apply(this, arguments) : pointRadius)));
-      return contextStream.result();
-    }
-    path.area = function(object) {
-      d3_geo_pathAreaSum = 0;
-      d3.geo.stream(object, projectStream(d3_geo_pathArea));
-      return d3_geo_pathAreaSum;
-    };
-    path.centroid = function(object) {
-      d3_geo_centroidDimension = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
-      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
-      return d3_geo_centroidZ ? [ d3_geo_centroidX / d3_geo_centroidZ, d3_geo_centroidY / d3_geo_centroidZ ] : undefined;
-    };
-    path.bounds = function(object) {
-      return d3_geo_bounds(projectStream)(object);
-    };
-    path.projection = function(_) {
-      if (!arguments.length) return projection;
-      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
-      return path;
-    };
-    path.context = function(_) {
-      if (!arguments.length) return context;
-      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
-      return path;
-    };
-    path.pointRadius = function(_) {
-      if (!arguments.length) return pointRadius;
-      pointRadius = typeof _ === "function" ? _ : +_;
-      return path;
-    };
-    return path.projection(d3.geo.albersUsa()).context(null);
-  };
-  function d3_geo_pathCircle(radius) {
-    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + +2 * radius + "z";
-  }
-  function d3_geo_pathProjectStream(project) {
-    var resample = d3_geo_resample(function(λ, φ) {
-      return project([ λ * d3_degrees, φ * d3_degrees ]);
-    });
-    return function(stream) {
-      stream = resample(stream);
-      return {
-        point: function(λ, φ) {
-          stream.point(λ * d3_radians, φ * d3_radians);
-        },
-        sphere: function() {
-          stream.sphere();
-        },
-        lineStart: function() {
-          stream.lineStart();
-        },
-        lineEnd: function() {
-          stream.lineEnd();
-        },
-        polygonStart: function() {
-          stream.polygonStart();
-        },
-        polygonEnd: function() {
-          stream.polygonEnd();
-        }
-      };
-    };
-  }
-  d3.geo.albers = function() {
-    return d3.geo.conicEqualArea().parallels([ 29.5, 45.5 ]).rotate([ 98, 0 ]).center([ 0, 38 ]).scale(1e3);
-  };
   function d3_geo_azimuthal(scale, angle) {
     function azimuthal(λ, φ) {
       var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
@@ -3591,12 +4691,17 @@ d3 = function() {
     }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
     if (!n) return d3_geo_mercator;
     function forward(λ, φ) {
-      var ρ = Math.abs(Math.abs(φ) - π / 2) < ε ? 0 : F / Math.pow(t(φ), n);
+      if (F > 0) {
+        if (φ < -halfπ + ε) φ = -halfπ + ε;
+      } else {
+        if (φ > halfπ - ε) φ = halfπ - ε;
+      }
+      var ρ = F / Math.pow(t(φ), n);
       return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
     }
     forward.invert = function(x, y) {
       var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
-      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - π / 2 ];
+      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
     };
     return forward;
   }
@@ -3605,7 +4710,7 @@ d3 = function() {
   }).raw = d3_geo_conicConformal;
   function d3_geo_conicEquidistant(φ0, φ1) {
     var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
-    if (Math.abs(n) < ε) return d3_geo_equirectangular;
+    if (abs(n) < ε) return d3_geo_equirectangular;
     function forward(λ, φ) {
       var ρ = G - φ;
       return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
@@ -3629,7 +4734,7 @@ d3 = function() {
     return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
   }
   d3_geo_mercator.invert = function(x, y) {
-    return [ x, 2 * Math.atan(Math.exp(y)) - π / 2 ];
+    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
   };
   function d3_geo_mercatorProjection(project) {
     var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
@@ -3673,335 +4778,45 @@ d3 = function() {
     return d3_geo_projection(d3_geo_stereographic);
   }).raw = d3_geo_stereographic;
   function d3_geo_transverseMercator(λ, φ) {
-    var B = Math.cos(φ) * Math.sin(λ);
-    return [ Math.log((1 + B) / (1 - B)) / 2, Math.atan2(Math.tan(φ), Math.cos(λ)) ];
+    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
   }
   d3_geo_transverseMercator.invert = function(x, y) {
-    return [ Math.atan2(d3_sinh(x), Math.cos(y)), d3_asin(Math.sin(y) / d3_cosh(x)) ];
+    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
   };
   (d3.geo.transverseMercator = function() {
-    return d3_geo_mercatorProjection(d3_geo_transverseMercator);
-  }).raw = d3_geo_transverseMercator;
-  d3.geom = {};
-  d3.svg = {};
-  function d3_svg_line(projection) {
-    var x = d3_svg_lineX, y = d3_svg_lineY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
-    function line(data) {
-      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
-      function segment() {
-        segments.push("M", interpolate(projection(points), tension));
-      }
-      while (++i < n) {
-        if (defined.call(this, d = data[i], i)) {
-          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
-        } else if (points.length) {
-          segment();
-          points = [];
-        }
-      }
-      if (points.length) segment();
-      return segments.length ? segments.join("") : null;
-    }
-    line.x = function(_) {
-      if (!arguments.length) return x;
-      x = _;
-      return line;
-    };
-    line.y = function(_) {
-      if (!arguments.length) return y;
-      y = _;
-      return line;
-    };
-    line.defined = function(_) {
-      if (!arguments.length) return defined;
-      defined = _;
-      return line;
-    };
-    line.interpolate = function(_) {
-      if (!arguments.length) return interpolateKey;
-      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
-      return line;
+    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
+    projection.center = function(_) {
+      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
     };
-    line.tension = function(_) {
-      if (!arguments.length) return tension;
-      tension = _;
-      return line;
+    projection.rotate = function(_) {
+      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(), 
+      [ _[0], _[1], _[2] - 90 ]);
     };
-    return line;
-  }
-  d3.svg.line = function() {
-    return d3_svg_line(d3_identity);
-  };
-  function d3_svg_lineX(d) {
+    return rotate([ 0, 0, 90 ]);
+  }).raw = d3_geo_transverseMercator;
+  d3.geom = {};
+  function d3_geom_pointX(d) {
     return d[0];
   }
-  function d3_svg_lineY(d) {
+  function d3_geom_pointY(d) {
     return d[1];
   }
-  var d3_svg_lineInterpolators = d3.map({
-    linear: d3_svg_lineLinear,
-    "linear-closed": d3_svg_lineLinearClosed,
-    "step-before": d3_svg_lineStepBefore,
-    "step-after": d3_svg_lineStepAfter,
-    basis: d3_svg_lineBasis,
-    "basis-open": d3_svg_lineBasisOpen,
-    "basis-closed": d3_svg_lineBasisClosed,
-    bundle: d3_svg_lineBundle,
-    cardinal: d3_svg_lineCardinal,
-    "cardinal-open": d3_svg_lineCardinalOpen,
-    "cardinal-closed": d3_svg_lineCardinalClosed,
-    monotone: d3_svg_lineMonotone
-  });
-  d3_svg_lineInterpolators.forEach(function(key, value) {
-    value.key = key;
-    value.closed = /-closed$/.test(key);
-  });
-  function d3_svg_lineLinear(points) {
-    return points.join("L");
-  }
-  function d3_svg_lineLinearClosed(points) {
-    return d3_svg_lineLinear(points) + "Z";
-  }
-  function d3_svg_lineStepBefore(points) {
-    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
-    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
-    return path.join("");
-  }
-  function d3_svg_lineStepAfter(points) {
-    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
-    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
-    return path.join("");
-  }
-  function d3_svg_lineCardinalOpen(points, tension) {
-    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, points.length - 1), d3_svg_lineCardinalTangents(points, tension));
-  }
-  function d3_svg_lineCardinalClosed(points, tension) {
-    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
-    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
-  }
-  function d3_svg_lineCardinal(points, tension) {
-    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
-  }
-  function d3_svg_lineHermite(points, tangents) {
-    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
-      return d3_svg_lineLinear(points);
-    }
-    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
-    if (quad) {
-      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
-      p0 = points[1];
-      pi = 2;
-    }
-    if (tangents.length > 1) {
-      t = tangents[1];
-      p = points[pi];
-      pi++;
-      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
-      for (var i = 2; i < tangents.length; i++, pi++) {
-        p = points[pi];
-        t = tangents[i];
-        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
-      }
-    }
-    if (quad) {
-      var lp = points[pi];
-      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
-    }
-    return path;
-  }
-  function d3_svg_lineCardinalTangents(points, tension) {
-    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
-    while (++i < n) {
-      p0 = p1;
-      p1 = p2;
-      p2 = points[i];
-      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
-    }
-    return tangents;
-  }
-  function d3_svg_lineBasis(points) {
-    if (points.length < 3) return d3_svg_lineLinear(points);
-    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0 ];
-    d3_svg_lineBasisBezier(path, px, py);
-    while (++i < n) {
-      pi = points[i];
-      px.shift();
-      px.push(pi[0]);
-      py.shift();
-      py.push(pi[1]);
-      d3_svg_lineBasisBezier(path, px, py);
-    }
-    i = -1;
-    while (++i < 2) {
-      px.shift();
-      px.push(pi[0]);
-      py.shift();
-      py.push(pi[1]);
-      d3_svg_lineBasisBezier(path, px, py);
-    }
-    return path.join("");
-  }
-  function d3_svg_lineBasisOpen(points) {
-    if (points.length < 4) return d3_svg_lineLinear(points);
-    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
-    while (++i < 3) {
-      pi = points[i];
-      px.push(pi[0]);
-      py.push(pi[1]);
-    }
-    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
-    --i;
-    while (++i < n) {
-      pi = points[i];
-      px.shift();
-      px.push(pi[0]);
-      py.shift();
-      py.push(pi[1]);
-      d3_svg_lineBasisBezier(path, px, py);
-    }
-    return path.join("");
-  }
-  function d3_svg_lineBasisClosed(points) {
-    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
-    while (++i < 4) {
-      pi = points[i % n];
-      px.push(pi[0]);
-      py.push(pi[1]);
-    }
-    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
-    --i;
-    while (++i < m) {
-      pi = points[i % n];
-      px.shift();
-      px.push(pi[0]);
-      py.shift();
-      py.push(pi[1]);
-      d3_svg_lineBasisBezier(path, px, py);
-    }
-    return path.join("");
-  }
-  function d3_svg_lineBundle(points, tension) {
-    var n = points.length - 1;
-    if (n) {
-      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
-      while (++i <= n) {
-        p = points[i];
-        t = i / n;
-        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
-        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
-      }
-    }
-    return d3_svg_lineBasis(points);
-  }
-  function d3_svg_lineDot4(a, b) {
-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
-  }
-  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
-  function d3_svg_lineBasisBezier(path, x, y) {
-    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
-  }
-  function d3_svg_lineSlope(p0, p1) {
-    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
-  }
-  function d3_svg_lineFiniteDifferences(points) {
-    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
-    while (++i < j) {
-      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
-    }
-    m[i] = d;
-    return m;
-  }
-  function d3_svg_lineMonotoneTangents(points) {
-    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
-    while (++i < j) {
-      d = d3_svg_lineSlope(points[i], points[i + 1]);
-      if (Math.abs(d) < 1e-6) {
-        m[i] = m[i + 1] = 0;
-      } else {
-        a = m[i] / d;
-        b = m[i + 1] / d;
-        s = a * a + b * b;
-        if (s > 9) {
-          s = d * 3 / Math.sqrt(s);
-          m[i] = s * a;
-          m[i + 1] = s * b;
-        }
-      }
-    }
-    i = -1;
-    while (++i <= j) {
-      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
-      tangents.push([ s || 0, m[i] * s || 0 ]);
-    }
-    return tangents;
-  }
-  function d3_svg_lineMonotone(points) {
-    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
-  }
   d3.geom.hull = function(vertices) {
-    var x = d3_svg_lineX, y = d3_svg_lineY;
+    var x = d3_geom_pointX, y = d3_geom_pointY;
     if (arguments.length) return hull(vertices);
     function hull(data) {
       if (data.length < 3) return [];
-      var fx = d3_functor(x), fy = d3_functor(y), n = data.length, vertices, plen = n - 1, points = [], stack = [], d, i, j, h = 0, x1, y1, x2, y2, u, v, a, sp;
-      if (fx === d3_svg_lineX && y === d3_svg_lineY) vertices = data; else for (i = 0, 
-      vertices = []; i < n; ++i) {
-        vertices.push([ +fx.call(this, d = data[i], i), +fy.call(this, d, i) ]);
-      }
-      for (i = 1; i < n; ++i) {
-        if (vertices[i][1] < vertices[h][1] || vertices[i][1] == vertices[h][1] && vertices[i][0] < vertices[h][0]) h = i;
-      }
-      for (i = 0; i < n; ++i) {
-        if (i === h) continue;
-        y1 = vertices[i][1] - vertices[h][1];
-        x1 = vertices[i][0] - vertices[h][0];
-        points.push({
-          angle: Math.atan2(y1, x1),
-          index: i
-        });
-      }
-      points.sort(function(a, b) {
-        return a.angle - b.angle;
-      });
-      a = points[0].angle;
-      v = points[0].index;
-      u = 0;
-      for (i = 1; i < plen; ++i) {
-        j = points[i].index;
-        if (a == points[i].angle) {
-          x1 = vertices[v][0] - vertices[h][0];
-          y1 = vertices[v][1] - vertices[h][1];
-          x2 = vertices[j][0] - vertices[h][0];
-          y2 = vertices[j][1] - vertices[h][1];
-          if (x1 * x1 + y1 * y1 >= x2 * x2 + y2 * y2) {
-            points[i].index = -1;
-            continue;
-          } else {
-            points[u].index = -1;
-          }
-        }
-        a = points[i].angle;
-        u = i;
-        v = j;
-      }
-      stack.push(h);
-      for (i = 0, j = 0; i < 2; ++j) {
-        if (points[j].index > -1) {
-          stack.push(points[j].index);
-          i++;
-        }
-      }
-      sp = stack.length;
-      for (;j < plen; ++j) {
-        if (points[j].index < 0) continue;
-        while (!d3_geom_hullCCW(stack[sp - 2], stack[sp - 1], points[j].index, vertices)) {
-          --sp;
-        }
-        stack[sp++] = points[j].index;
-      }
-      var poly = [];
-      for (i = sp - 1; i >= 0; --i) poly.push(data[stack[i]]);
-      return poly;
+      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
+      for (i = 0; i < n; i++) {
+        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
+      }
+      points.sort(d3_geom_hullOrder);
+      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
+      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
+      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
+      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
+      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
+      return polygon;
     }
     hull.x = function(_) {
       return arguments.length ? (x = _, hull) : x;
@@ -4011,64 +4826,67 @@ d3 = function() {
     };
     return hull;
   };
-  function d3_geom_hullCCW(i1, i2, i3, v) {
-    var t, a, b, c, d, e, f;
-    t = v[i1];
-    a = t[0];
-    b = t[1];
-    t = v[i2];
-    c = t[0];
-    d = t[1];
-    t = v[i3];
-    e = t[0];
-    f = t[1];
-    return (f - b) * (c - a) - (d - b) * (e - a) > 0;
+  function d3_geom_hullUpper(points) {
+    var n = points.length, hull = [ 0, 1 ], hs = 2;
+    for (var i = 2; i < n; i++) {
+      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
+      hull[hs++] = i;
+    }
+    return hull.slice(0, hs);
+  }
+  function d3_geom_hullOrder(a, b) {
+    return a[0] - b[0] || a[1] - b[1];
   }
   d3.geom.polygon = function(coordinates) {
-    coordinates.area = function() {
-      var i = 0, n = coordinates.length, area = coordinates[n - 1][1] * coordinates[0][0] - coordinates[n - 1][0] * coordinates[0][1];
-      while (++i < n) {
-        area += coordinates[i - 1][1] * coordinates[i][0] - coordinates[i - 1][0] * coordinates[i][1];
-      }
-      return area * .5;
-    };
-    coordinates.centroid = function(k) {
-      var i = -1, n = coordinates.length, x = 0, y = 0, a, b = coordinates[n - 1], c;
-      if (!arguments.length) k = -1 / (6 * coordinates.area());
-      while (++i < n) {
-        a = b;
-        b = coordinates[i];
-        c = a[0] * b[1] - b[0] * a[1];
-        x += (a[0] + b[0]) * c;
-        y += (a[1] + b[1]) * c;
-      }
-      return [ x * k, y * k ];
-    };
-    coordinates.clip = function(subject) {
-      var input, i = -1, n = coordinates.length, j, m, a = coordinates[n - 1], b, c, d;
-      while (++i < n) {
-        input = subject.slice();
-        subject.length = 0;
-        b = coordinates[i];
-        c = input[(m = input.length) - 1];
-        j = -1;
-        while (++j < m) {
-          d = input[j];
-          if (d3_geom_polygonInside(d, a, b)) {
-            if (!d3_geom_polygonInside(c, a, b)) {
-              subject.push(d3_geom_polygonIntersect(c, d, a, b));
-            }
-            subject.push(d);
-          } else if (d3_geom_polygonInside(c, a, b)) {
+    d3_subclass(coordinates, d3_geom_polygonPrototype);
+    return coordinates;
+  };
+  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
+  d3_geom_polygonPrototype.area = function() {
+    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
+    while (++i < n) {
+      a = b;
+      b = this[i];
+      area += a[1] * b[0] - a[0] * b[1];
+    }
+    return area * .5;
+  };
+  d3_geom_polygonPrototype.centroid = function(k) {
+    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
+    if (!arguments.length) k = -1 / (6 * this.area());
+    while (++i < n) {
+      a = b;
+      b = this[i];
+      c = a[0] * b[1] - b[0] * a[1];
+      x += (a[0] + b[0]) * c;
+      y += (a[1] + b[1]) * c;
+    }
+    return [ x * k, y * k ];
+  };
+  d3_geom_polygonPrototype.clip = function(subject) {
+    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
+    while (++i < n) {
+      input = subject.slice();
+      subject.length = 0;
+      b = this[i];
+      c = input[(m = input.length - closed) - 1];
+      j = -1;
+      while (++j < m) {
+        d = input[j];
+        if (d3_geom_polygonInside(d, a, b)) {
+          if (!d3_geom_polygonInside(c, a, b)) {
             subject.push(d3_geom_polygonIntersect(c, d, a, b));
           }
-          c = d;
+          subject.push(d);
+        } else if (d3_geom_polygonInside(c, a, b)) {
+          subject.push(d3_geom_polygonIntersect(c, d, a, b));
         }
-        a = b;
+        c = d;
       }
-      return subject;
-    };
-    return coordinates;
+      if (closed) subject.push(subject[0]);
+      a = b;
+    }
+    return subject;
   };
   function d3_geom_polygonInside(p, a, b) {
     return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
@@ -4077,425 +4895,660 @@ d3 = function() {
     var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
     return [ x1 + ua * x21, y1 + ua * y21 ];
   }
-  d3.geom.delaunay = function(vertices) {
-    var edges = vertices.map(function() {
-      return [];
-    }), triangles = [];
-    d3_geom_voronoiTessellate(vertices, function(e) {
-      edges[e.region.l.index].push(vertices[e.region.r.index]);
-    });
-    edges.forEach(function(edge, i) {
-      var v = vertices[i], cx = v[0], cy = v[1];
-      edge.forEach(function(v) {
-        v.angle = Math.atan2(v[0] - cx, v[1] - cy);
-      });
-      edge.sort(function(a, b) {
-        return a.angle - b.angle;
-      });
-      for (var j = 0, m = edge.length - 1; j < m; j++) {
-        triangles.push([ v, edge[j], edge[j + 1] ]);
-      }
-    });
-    return triangles;
-  };
-  d3.geom.voronoi = function(points) {
-    var size = null, x = d3_svg_lineX, y = d3_svg_lineY, clip;
-    if (arguments.length) return voronoi(points);
-    function voronoi(data) {
-      var points, polygons = data.map(function() {
-        return [];
-      }), fx = d3_functor(x), fy = d3_functor(y), d, i, n = data.length, Z = 1e6;
-      if (fx === d3_svg_lineX && fy === d3_svg_lineY) points = data; else for (points = [], 
-      i = 0; i < n; ++i) {
-        points.push([ +fx.call(this, d = data[i], i), +fy.call(this, d, i) ]);
-      }
-      d3_geom_voronoiTessellate(points, function(e) {
-        var s1, s2, x1, x2, y1, y2;
-        if (e.a === 1 && e.b >= 0) {
-          s1 = e.ep.r;
-          s2 = e.ep.l;
-        } else {
-          s1 = e.ep.l;
-          s2 = e.ep.r;
-        }
-        if (e.a === 1) {
-          y1 = s1 ? s1.y : -Z;
-          x1 = e.c - e.b * y1;
-          y2 = s2 ? s2.y : Z;
-          x2 = e.c - e.b * y2;
-        } else {
-          x1 = s1 ? s1.x : -Z;
-          y1 = e.c - e.a * x1;
-          x2 = s2 ? s2.x : Z;
-          y2 = e.c - e.a * x2;
-        }
-        var v1 = [ x1, y1 ], v2 = [ x2, y2 ];
-        polygons[e.region.l.index].push(v1, v2);
-        polygons[e.region.r.index].push(v1, v2);
-      });
-      polygons = polygons.map(function(polygon, i) {
-        var cx = points[i][0], cy = points[i][1], angle = polygon.map(function(v) {
-          return Math.atan2(v[0] - cx, v[1] - cy);
-        }), order = d3.range(polygon.length).sort(function(a, b) {
-          return angle[a] - angle[b];
-        });
-        return order.filter(function(d, i) {
-          return !i || angle[d] - angle[order[i - 1]] > ε;
-        }).map(function(d) {
-          return polygon[d];
-        });
-      });
-      polygons.forEach(function(polygon, i) {
-        var n = polygon.length;
-        if (!n) return polygon.push([ -Z, -Z ], [ -Z, Z ], [ Z, Z ], [ Z, -Z ]);
-        if (n > 2) return;
-        var p0 = points[i], p1 = polygon[0], p2 = polygon[1], x0 = p0[0], y0 = p0[1], x1 = p1[0], y1 = p1[1], x2 = p2[0], y2 = p2[1], dx = Math.abs(x2 - x1), dy = y2 - y1;
-        if (Math.abs(dy) < ε) {
-          var y = y0 < y1 ? -Z : Z;
-          polygon.push([ -Z, y ], [ Z, y ]);
-        } else if (dx < ε) {
-          var x = x0 < x1 ? -Z : Z;
-          polygon.push([ x, -Z ], [ x, Z ]);
+  function d3_geom_polygonClosed(coordinates) {
+    var a = coordinates[0], b = coordinates[coordinates.length - 1];
+    return !(a[0] - b[0] || a[1] - b[1]);
+  }
+  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
+  function d3_geom_voronoiBeach() {
+    d3_geom_voronoiRedBlackNode(this);
+    this.edge = this.site = this.circle = null;
+  }
+  function d3_geom_voronoiCreateBeach(site) {
+    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
+    beach.site = site;
+    return beach;
+  }
+  function d3_geom_voronoiDetachBeach(beach) {
+    d3_geom_voronoiDetachCircle(beach);
+    d3_geom_voronoiBeaches.remove(beach);
+    d3_geom_voronoiBeachPool.push(beach);
+    d3_geom_voronoiRedBlackNode(beach);
+  }
+  function d3_geom_voronoiRemoveBeach(beach) {
+    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
+      x: x,
+      y: y
+    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
+    d3_geom_voronoiDetachBeach(beach);
+    var lArc = previous;
+    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
+      previous = lArc.P;
+      disappearing.unshift(lArc);
+      d3_geom_voronoiDetachBeach(lArc);
+      lArc = previous;
+    }
+    disappearing.unshift(lArc);
+    d3_geom_voronoiDetachCircle(lArc);
+    var rArc = next;
+    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
+      next = rArc.N;
+      disappearing.push(rArc);
+      d3_geom_voronoiDetachBeach(rArc);
+      rArc = next;
+    }
+    disappearing.push(rArc);
+    d3_geom_voronoiDetachCircle(rArc);
+    var nArcs = disappearing.length, iArc;
+    for (iArc = 1; iArc < nArcs; ++iArc) {
+      rArc = disappearing[iArc];
+      lArc = disappearing[iArc - 1];
+      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
+    }
+    lArc = disappearing[0];
+    rArc = disappearing[nArcs - 1];
+    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
+    d3_geom_voronoiAttachCircle(lArc);
+    d3_geom_voronoiAttachCircle(rArc);
+  }
+  function d3_geom_voronoiAddBeach(site) {
+    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
+    while (node) {
+      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
+      if (dxl > ε) node = node.L; else {
+        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
+        if (dxr > ε) {
+          if (!node.R) {
+            lArc = node;
+            break;
+          }
+          node = node.R;
         } else {
-          var y = (x2 - x1) * (y1 - y0) < (x1 - x0) * (y2 - y1) ? Z : -Z, z = Math.abs(dy) - dx;
-          if (Math.abs(z) < ε) {
-            polygon.push([ dy < 0 ? y : -y, y ]);
+          if (dxl > -ε) {
+            lArc = node.P;
+            rArc = node;
+          } else if (dxr > -ε) {
+            lArc = node;
+            rArc = node.N;
           } else {
-            if (z > 0) y *= -1;
-            polygon.push([ -Z, y ], [ Z, y ]);
+            lArc = rArc = node;
           }
+          break;
+        }
+      }
+    }
+    var newArc = d3_geom_voronoiCreateBeach(site);
+    d3_geom_voronoiBeaches.insert(lArc, newArc);
+    if (!lArc && !rArc) return;
+    if (lArc === rArc) {
+      d3_geom_voronoiDetachCircle(lArc);
+      rArc = d3_geom_voronoiCreateBeach(lArc.site);
+      d3_geom_voronoiBeaches.insert(newArc, rArc);
+      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
+      d3_geom_voronoiAttachCircle(lArc);
+      d3_geom_voronoiAttachCircle(rArc);
+      return;
+    }
+    if (!rArc) {
+      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
+      return;
+    }
+    d3_geom_voronoiDetachCircle(lArc);
+    d3_geom_voronoiDetachCircle(rArc);
+    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
+      x: (cy * hb - by * hc) / d + ax,
+      y: (bx * hc - cx * hb) / d + ay
+    };
+    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
+    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
+    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
+    d3_geom_voronoiAttachCircle(lArc);
+    d3_geom_voronoiAttachCircle(rArc);
+  }
+  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
+    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
+    if (!pby2) return rfocx;
+    var lArc = arc.P;
+    if (!lArc) return -Infinity;
+    site = lArc.site;
+    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
+    if (!plby2) return lfocx;
+    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
+    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
+    return (rfocx + lfocx) / 2;
+  }
+  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
+    var rArc = arc.N;
+    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
+    var site = arc.site;
+    return site.y === directrix ? site.x : Infinity;
+  }
+  function d3_geom_voronoiCell(site) {
+    this.site = site;
+    this.edges = [];
+  }
+  d3_geom_voronoiCell.prototype.prepare = function() {
+    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
+    while (iHalfEdge--) {
+      edge = halfEdges[iHalfEdge].edge;
+      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
+    }
+    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
+    return halfEdges.length;
+  };
+  function d3_geom_voronoiCloseCells(extent) {
+    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
+    while (iCell--) {
+      cell = cells[iCell];
+      if (!cell || !cell.prepare()) continue;
+      halfEdges = cell.edges;
+      nHalfEdges = halfEdges.length;
+      iHalfEdge = 0;
+      while (iHalfEdge < nHalfEdges) {
+        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
+        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
+        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
+          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
+            x: x0,
+            y: abs(x2 - x0) < ε ? y2 : y1
+          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
+            x: abs(y2 - y1) < ε ? x2 : x1,
+            y: y1
+          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
+            x: x1,
+            y: abs(x2 - x1) < ε ? y2 : y0
+          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
+            x: abs(y2 - y0) < ε ? x2 : x0,
+            y: y0
+          } : null), cell.site, null));
+          ++nHalfEdges;
+        }
+      }
+    }
+  }
+  function d3_geom_voronoiHalfEdgeOrder(a, b) {
+    return b.angle - a.angle;
+  }
+  function d3_geom_voronoiCircle() {
+    d3_geom_voronoiRedBlackNode(this);
+    this.x = this.y = this.arc = this.site = this.cy = null;
+  }
+  function d3_geom_voronoiAttachCircle(arc) {
+    var lArc = arc.P, rArc = arc.N;
+    if (!lArc || !rArc) return;
+    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
+    if (lSite === rSite) return;
+    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
+    var d = 2 * (ax * cy - ay * cx);
+    if (d >= -ε2) return;
+    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
+    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
+    circle.arc = arc;
+    circle.site = cSite;
+    circle.x = x + bx;
+    circle.y = cy + Math.sqrt(x * x + y * y);
+    circle.cy = cy;
+    arc.circle = circle;
+    var before = null, node = d3_geom_voronoiCircles._;
+    while (node) {
+      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
+        if (node.L) node = node.L; else {
+          before = node.P;
+          break;
         }
-      });
-      if (clip) for (i = 0; i < n; ++i) clip(polygons[i]);
-      for (i = 0; i < n; ++i) polygons[i].point = data[i];
-      return polygons;
-    }
-    voronoi.x = function(_) {
-      return arguments.length ? (x = _, voronoi) : x;
-    };
-    voronoi.y = function(_) {
-      return arguments.length ? (y = _, voronoi) : y;
-    };
-    voronoi.size = function(_) {
-      if (!arguments.length) return size;
-      if (_ == null) {
-        clip = null;
       } else {
-        size = [ +_[0], +_[1] ];
-        clip = d3.geom.polygon([ [ 0, 0 ], [ 0, size[1] ], size, [ size[0], 0 ] ]).clip;
-      }
-      return voronoi;
-    };
-    voronoi.links = function(data) {
-      var points, graph = data.map(function() {
-        return [];
-      }), links = [], fx = d3_functor(x), fy = d3_functor(y), d, i, n = data.length;
-      if (fx === d3_svg_lineX && fy === d3_svg_lineY) points = data; else for (i = 0; i < n; ++i) {
-        points.push([ +fx.call(this, d = data[i], i), +fy.call(this, d, i) ]);
-      }
-      d3_geom_voronoiTessellate(points, function(e) {
-        var l = e.region.l.index, r = e.region.r.index;
-        if (graph[l][r]) return;
-        graph[l][r] = graph[r][l] = true;
-        links.push({
-          source: data[l],
-          target: data[r]
-        });
-      });
-      return links;
-    };
-    voronoi.triangles = function(data) {
-      if (x === d3_svg_lineX && y === d3_svg_lineY) return d3.geom.delaunay(data);
-      var points, point, fx = d3_functor(x), fy = d3_functor(y), d, i, n;
-      for (i = 0, points = [], n = data.length; i < n; ++i) {
-        point = [ +fx.call(this, d = data[i], i), +fy.call(this, d, i) ];
-        point.data = d;
-        points.push(point);
-      }
-      return d3.geom.delaunay(points).map(function(triangle) {
-        return triangle.map(function(point) {
-          return point.data;
-        });
-      });
-    };
-    return voronoi;
-  };
-  var d3_geom_voronoiOpposite = {
-    l: "r",
-    r: "l"
-  };
-  function d3_geom_voronoiTessellate(points, callback) {
-    var Sites = {
-      list: points.map(function(v, i) {
-        return {
-          index: i,
-          x: v[0],
-          y: v[1]
+        if (node.R) node = node.R; else {
+          before = node;
+          break;
+        }
+      }
+    }
+    d3_geom_voronoiCircles.insert(before, circle);
+    if (!before) d3_geom_voronoiFirstCircle = circle;
+  }
+  function d3_geom_voronoiDetachCircle(arc) {
+    var circle = arc.circle;
+    if (circle) {
+      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
+      d3_geom_voronoiCircles.remove(circle);
+      d3_geom_voronoiCirclePool.push(circle);
+      d3_geom_voronoiRedBlackNode(circle);
+      arc.circle = null;
+    }
+  }
+  function d3_geom_voronoiClipEdges(extent) {
+    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
+    while (i--) {
+      e = edges[i];
+      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
+        e.a = e.b = null;
+        edges.splice(i, 1);
+      }
+    }
+  }
+  function d3_geom_voronoiConnectEdge(edge, extent) {
+    var vb = edge.b;
+    if (vb) return true;
+    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
+    if (ry === ly) {
+      if (fx < x0 || fx >= x1) return;
+      if (lx > rx) {
+        if (!va) va = {
+          x: fx,
+          y: y0
+        }; else if (va.y >= y1) return;
+        vb = {
+          x: fx,
+          y: y1
         };
-      }).sort(function(a, b) {
-        return a.y < b.y ? -1 : a.y > b.y ? 1 : a.x < b.x ? -1 : a.x > b.x ? 1 : 0;
-      }),
-      bottomSite: null
-    };
-    var EdgeList = {
-      list: [],
-      leftEnd: null,
-      rightEnd: null,
-      init: function() {
-        EdgeList.leftEnd = EdgeList.createHalfEdge(null, "l");
-        EdgeList.rightEnd = EdgeList.createHalfEdge(null, "l");
-        EdgeList.leftEnd.r = EdgeList.rightEnd;
-        EdgeList.rightEnd.l = EdgeList.leftEnd;
-        EdgeList.list.unshift(EdgeList.leftEnd, EdgeList.rightEnd);
-      },
-      createHalfEdge: function(edge, side) {
-        return {
-          edge: edge,
-          side: side,
-          vertex: null,
-          l: null,
-          r: null
-        };
-      },
-      insert: function(lb, he) {
-        he.l = lb;
-        he.r = lb.r;
-        lb.r.l = he;
-        lb.r = he;
-      },
-      leftBound: function(p) {
-        var he = EdgeList.leftEnd;
-        do {
-          he = he.r;
-        } while (he != EdgeList.rightEnd && Geom.rightOf(he, p));
-        he = he.l;
-        return he;
-      },
-      del: function(he) {
-        he.l.r = he.r;
-        he.r.l = he.l;
-        he.edge = null;
-      },
-      right: function(he) {
-        return he.r;
-      },
-      left: function(he) {
-        return he.l;
-      },
-      leftRegion: function(he) {
-        return he.edge == null ? Sites.bottomSite : he.edge.region[he.side];
-      },
-      rightRegion: function(he) {
-        return he.edge == null ? Sites.bottomSite : he.edge.region[d3_geom_voronoiOpposite[he.side]];
-      }
-    };
-    var Geom = {
-      bisect: function(s1, s2) {
-        var newEdge = {
-          region: {
-            l: s1,
-            r: s2
-          },
-          ep: {
-            l: null,
-            r: null
-          }
+      } else {
+        if (!va) va = {
+          x: fx,
+          y: y1
+        }; else if (va.y < y0) return;
+        vb = {
+          x: fx,
+          y: y0
         };
-        var dx = s2.x - s1.x, dy = s2.y - s1.y, adx = dx > 0 ? dx : -dx, ady = dy > 0 ? dy : -dy;
-        newEdge.c = s1.x * dx + s1.y * dy + (dx * dx + dy * dy) * .5;
-        if (adx > ady) {
-          newEdge.a = 1;
-          newEdge.b = dy / dx;
-          newEdge.c /= dx;
+      }
+    } else {
+      fm = (lx - rx) / (ry - ly);
+      fb = fy - fm * fx;
+      if (fm < -1 || fm > 1) {
+        if (lx > rx) {
+          if (!va) va = {
+            x: (y0 - fb) / fm,
+            y: y0
+          }; else if (va.y >= y1) return;
+          vb = {
+            x: (y1 - fb) / fm,
+            y: y1
+          };
         } else {
-          newEdge.b = 1;
-          newEdge.a = dx / dy;
-          newEdge.c /= dy;
+          if (!va) va = {
+            x: (y1 - fb) / fm,
+            y: y1
+          }; else if (va.y < y0) return;
+          vb = {
+            x: (y0 - fb) / fm,
+            y: y0
+          };
         }
-        return newEdge;
-      },
-      intersect: function(el1, el2) {
-        var e1 = el1.edge, e2 = el2.edge;
-        if (!e1 || !e2 || e1.region.r == e2.region.r) {
-          return null;
-        }
-        var d = e1.a * e2.b - e1.b * e2.a;
-        if (Math.abs(d) < 1e-10) {
-          return null;
-        }
-        var xint = (e1.c * e2.b - e2.c * e1.b) / d, yint = (e2.c * e1.a - e1.c * e2.a) / d, e1r = e1.region.r, e2r = e2.region.r, el, e;
-        if (e1r.y < e2r.y || e1r.y == e2r.y && e1r.x < e2r.x) {
-          el = el1;
-          e = e1;
+      } else {
+        if (ly < ry) {
+          if (!va) va = {
+            x: x0,
+            y: fm * x0 + fb
+          }; else if (va.x >= x1) return;
+          vb = {
+            x: x1,
+            y: fm * x1 + fb
+          };
         } else {
-          el = el2;
-          e = e2;
-        }
-        var rightOfSite = xint >= e.region.r.x;
-        if (rightOfSite && el.side === "l" || !rightOfSite && el.side === "r") {
-          return null;
+          if (!va) va = {
+            x: x1,
+            y: fm * x1 + fb
+          }; else if (va.x < x0) return;
+          vb = {
+            x: x0,
+            y: fm * x0 + fb
+          };
         }
-        return {
-          x: xint,
-          y: yint
-        };
-      },
-      rightOf: function(he, p) {
-        var e = he.edge, topsite = e.region.r, rightOfSite = p.x > topsite.x;
-        if (rightOfSite && he.side === "l") {
-          return 1;
-        }
-        if (!rightOfSite && he.side === "r") {
-          return 0;
-        }
-        if (e.a === 1) {
-          var dyp = p.y - topsite.y, dxp = p.x - topsite.x, fast = 0, above = 0;
-          if (!rightOfSite && e.b < 0 || rightOfSite && e.b >= 0) {
-            above = fast = dyp >= e.b * dxp;
+      }
+    }
+    edge.a = va;
+    edge.b = vb;
+    return true;
+  }
+  function d3_geom_voronoiEdge(lSite, rSite) {
+    this.l = lSite;
+    this.r = rSite;
+    this.a = this.b = null;
+  }
+  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
+    var edge = new d3_geom_voronoiEdge(lSite, rSite);
+    d3_geom_voronoiEdges.push(edge);
+    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
+    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
+    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
+    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
+    return edge;
+  }
+  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
+    var edge = new d3_geom_voronoiEdge(lSite, null);
+    edge.a = va;
+    edge.b = vb;
+    d3_geom_voronoiEdges.push(edge);
+    return edge;
+  }
+  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
+    if (!edge.a && !edge.b) {
+      edge.a = vertex;
+      edge.l = lSite;
+      edge.r = rSite;
+    } else if (edge.l === rSite) {
+      edge.b = vertex;
+    } else {
+      edge.a = vertex;
+    }
+  }
+  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
+    var va = edge.a, vb = edge.b;
+    this.edge = edge;
+    this.site = lSite;
+    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
+  }
+  d3_geom_voronoiHalfEdge.prototype = {
+    start: function() {
+      return this.edge.l === this.site ? this.edge.a : this.edge.b;
+    },
+    end: function() {
+      return this.edge.l === this.site ? this.edge.b : this.edge.a;
+    }
+  };
+  function d3_geom_voronoiRedBlackTree() {
+    this._ = null;
+  }
+  function d3_geom_voronoiRedBlackNode(node) {
+    node.U = node.C = node.L = node.R = node.P = node.N = null;
+  }
+  d3_geom_voronoiRedBlackTree.prototype = {
+    insert: function(after, node) {
+      var parent, grandpa, uncle;
+      if (after) {
+        node.P = after;
+        node.N = after.N;
+        if (after.N) after.N.P = node;
+        after.N = node;
+        if (after.R) {
+          after = after.R;
+          while (after.L) after = after.L;
+          after.L = node;
+        } else {
+          after.R = node;
+        }
+        parent = after;
+      } else if (this._) {
+        after = d3_geom_voronoiRedBlackFirst(this._);
+        node.P = null;
+        node.N = after;
+        after.P = after.L = node;
+        parent = after;
+      } else {
+        node.P = node.N = null;
+        this._ = node;
+        parent = null;
+      }
+      node.L = node.R = null;
+      node.U = parent;
+      node.C = true;
+      after = node;
+      while (parent && parent.C) {
+        grandpa = parent.U;
+        if (parent === grandpa.L) {
+          uncle = grandpa.R;
+          if (uncle && uncle.C) {
+            parent.C = uncle.C = false;
+            grandpa.C = true;
+            after = grandpa;
           } else {
-            above = p.x + p.y * e.b > e.c;
-            if (e.b < 0) {
-              above = !above;
-            }
-            if (!above) {
-              fast = 1;
+            if (after === parent.R) {
+              d3_geom_voronoiRedBlackRotateLeft(this, parent);
+              after = parent;
+              parent = after.U;
             }
+            parent.C = false;
+            grandpa.C = true;
+            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
           }
-          if (!fast) {
-            var dxs = topsite.x - e.region.l.x;
-            above = e.b * (dxp * dxp - dyp * dyp) < dxs * dyp * (1 + 2 * dxp / dxs + e.b * e.b);
-            if (e.b < 0) {
-              above = !above;
+        } else {
+          uncle = grandpa.L;
+          if (uncle && uncle.C) {
+            parent.C = uncle.C = false;
+            grandpa.C = true;
+            after = grandpa;
+          } else {
+            if (after === parent.L) {
+              d3_geom_voronoiRedBlackRotateRight(this, parent);
+              after = parent;
+              parent = after.U;
             }
+            parent.C = false;
+            grandpa.C = true;
+            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
           }
+        }
+        parent = after.U;
+      }
+      this._.C = false;
+    },
+    remove: function(node) {
+      if (node.N) node.N.P = node.P;
+      if (node.P) node.P.N = node.N;
+      node.N = node.P = null;
+      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
+      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
+      if (parent) {
+        if (parent.L === node) parent.L = next; else parent.R = next;
+      } else {
+        this._ = next;
+      }
+      if (left && right) {
+        red = next.C;
+        next.C = node.C;
+        next.L = left;
+        left.U = next;
+        if (next !== right) {
+          parent = next.U;
+          next.U = node.U;
+          node = next.R;
+          parent.L = node;
+          next.R = right;
+          right.U = next;
         } else {
-          var yl = e.c - e.a * p.x, t1 = p.y - yl, t2 = p.x - topsite.x, t3 = yl - topsite.y;
-          above = t1 * t1 > t2 * t2 + t3 * t3;
+          next.U = parent;
+          parent = next;
+          node = next.R;
         }
-        return he.side === "l" ? above : !above;
-      },
-      endPoint: function(edge, side, site) {
-        edge.ep[side] = site;
-        if (!edge.ep[d3_geom_voronoiOpposite[side]]) return;
-        callback(edge);
-      },
-      distance: function(s, t) {
-        var dx = s.x - t.x, dy = s.y - t.y;
-        return Math.sqrt(dx * dx + dy * dy);
-      }
-    };
-    var EventQueue = {
-      list: [],
-      insert: function(he, site, offset) {
-        he.vertex = site;
-        he.ystar = site.y + offset;
-        for (var i = 0, list = EventQueue.list, l = list.length; i < l; i++) {
-          var next = list[i];
-          if (he.ystar > next.ystar || he.ystar == next.ystar && site.x > next.vertex.x) {
-            continue;
-          } else {
+      } else {
+        red = node.C;
+        node = next;
+      }
+      if (node) node.U = parent;
+      if (red) return;
+      if (node && node.C) {
+        node.C = false;
+        return;
+      }
+      do {
+        if (node === this._) break;
+        if (node === parent.L) {
+          sibling = parent.R;
+          if (sibling.C) {
+            sibling.C = false;
+            parent.C = true;
+            d3_geom_voronoiRedBlackRotateLeft(this, parent);
+            sibling = parent.R;
+          }
+          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
+            if (!sibling.R || !sibling.R.C) {
+              sibling.L.C = false;
+              sibling.C = true;
+              d3_geom_voronoiRedBlackRotateRight(this, sibling);
+              sibling = parent.R;
+            }
+            sibling.C = parent.C;
+            parent.C = sibling.R.C = false;
+            d3_geom_voronoiRedBlackRotateLeft(this, parent);
+            node = this._;
+            break;
+          }
+        } else {
+          sibling = parent.L;
+          if (sibling.C) {
+            sibling.C = false;
+            parent.C = true;
+            d3_geom_voronoiRedBlackRotateRight(this, parent);
+            sibling = parent.L;
+          }
+          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
+            if (!sibling.L || !sibling.L.C) {
+              sibling.R.C = false;
+              sibling.C = true;
+              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
+              sibling = parent.L;
+            }
+            sibling.C = parent.C;
+            parent.C = sibling.L.C = false;
+            d3_geom_voronoiRedBlackRotateRight(this, parent);
+            node = this._;
             break;
           }
         }
-        list.splice(i, 0, he);
-      },
-      del: function(he) {
-        for (var i = 0, ls = EventQueue.list, l = ls.length; i < l && ls[i] != he; ++i) {}
-        ls.splice(i, 1);
-      },
-      empty: function() {
-        return EventQueue.list.length === 0;
-      },
-      nextEvent: function(he) {
-        for (var i = 0, ls = EventQueue.list, l = ls.length; i < l; ++i) {
-          if (ls[i] == he) return ls[i + 1];
-        }
-        return null;
-      },
-      min: function() {
-        var elem = EventQueue.list[0];
-        return {
-          x: elem.vertex.x,
-          y: elem.ystar
-        };
-      },
-      extractMin: function() {
-        return EventQueue.list.shift();
-      }
-    };
-    EdgeList.init();
-    Sites.bottomSite = Sites.list.shift();
-    var newSite = Sites.list.shift(), newIntStar;
-    var lbnd, rbnd, llbnd, rrbnd, bisector;
-    var bot, top, temp, p, v;
-    var e, pm;
+        sibling.C = true;
+        node = parent;
+        parent = parent.U;
+      } while (!node.C);
+      if (node) node.C = false;
+    }
+  };
+  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
+    var p = node, q = node.R, parent = p.U;
+    if (parent) {
+      if (parent.L === p) parent.L = q; else parent.R = q;
+    } else {
+      tree._ = q;
+    }
+    q.U = parent;
+    p.U = q;
+    p.R = q.L;
+    if (p.R) p.R.U = p;
+    q.L = p;
+  }
+  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
+    var p = node, q = node.L, parent = p.U;
+    if (parent) {
+      if (parent.L === p) parent.L = q; else parent.R = q;
+    } else {
+      tree._ = q;
+    }
+    q.U = parent;
+    p.U = q;
+    p.L = q.R;
+    if (p.L) p.L.U = p;
+    q.R = p;
+  }
+  function d3_geom_voronoiRedBlackFirst(node) {
+    while (node.L) node = node.L;
+    return node;
+  }
+  function d3_geom_voronoi(sites, bbox) {
+    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
+    d3_geom_voronoiEdges = [];
+    d3_geom_voronoiCells = new Array(sites.length);
+    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
+    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
     while (true) {
-      if (!EventQueue.empty()) {
-        newIntStar = EventQueue.min();
-      }
-      if (newSite && (EventQueue.empty() || newSite.y < newIntStar.y || newSite.y == newIntStar.y && newSite.x < newIntStar.x)) {
-        lbnd = EdgeList.leftBound(newSite);
-        rbnd = EdgeList.right(lbnd);
-        bot = EdgeList.rightRegion(lbnd);
-        e = Geom.bisect(bot, newSite);
-        bisector = EdgeList.createHalfEdge(e, "l");
-        EdgeList.insert(lbnd, bisector);
-        p = Geom.intersect(lbnd, bisector);
-        if (p) {
-          EventQueue.del(lbnd);
-          EventQueue.insert(lbnd, p, Geom.distance(p, newSite));
-        }
-        lbnd = bisector;
-        bisector = EdgeList.createHalfEdge(e, "r");
-        EdgeList.insert(lbnd, bisector);
-        p = Geom.intersect(bisector, rbnd);
-        if (p) {
-          EventQueue.insert(bisector, p, Geom.distance(p, newSite));
-        }
-        newSite = Sites.list.shift();
-      } else if (!EventQueue.empty()) {
-        lbnd = EventQueue.extractMin();
-        llbnd = EdgeList.left(lbnd);
-        rbnd = EdgeList.right(lbnd);
-        rrbnd = EdgeList.right(rbnd);
-        bot = EdgeList.leftRegion(lbnd);
-        top = EdgeList.rightRegion(rbnd);
-        v = lbnd.vertex;
-        Geom.endPoint(lbnd.edge, lbnd.side, v);
-        Geom.endPoint(rbnd.edge, rbnd.side, v);
-        EdgeList.del(lbnd);
-        EventQueue.del(rbnd);
-        EdgeList.del(rbnd);
-        pm = "l";
-        if (bot.y > top.y) {
-          temp = bot;
-          bot = top;
-          top = temp;
-          pm = "r";
-        }
-        e = Geom.bisect(bot, top);
-        bisector = EdgeList.createHalfEdge(e, pm);
-        EdgeList.insert(llbnd, bisector);
-        Geom.endPoint(e, d3_geom_voronoiOpposite[pm], v);
-        p = Geom.intersect(llbnd, bisector);
-        if (p) {
-          EventQueue.del(llbnd);
-          EventQueue.insert(llbnd, p, Geom.distance(p, bot));
-        }
-        p = Geom.intersect(bisector, rrbnd);
-        if (p) {
-          EventQueue.insert(bisector, p, Geom.distance(p, bot));
-        }
+      circle = d3_geom_voronoiFirstCircle;
+      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
+        if (site.x !== x0 || site.y !== y0) {
+          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
+          d3_geom_voronoiAddBeach(site);
+          x0 = site.x, y0 = site.y;
+        }
+        site = sites.pop();
+      } else if (circle) {
+        d3_geom_voronoiRemoveBeach(circle.arc);
       } else {
         break;
       }
     }
-    for (lbnd = EdgeList.right(EdgeList.leftEnd); lbnd != EdgeList.rightEnd; lbnd = EdgeList.right(lbnd)) {
-      callback(lbnd.edge);
+    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
+    var diagram = {
+      cells: d3_geom_voronoiCells,
+      edges: d3_geom_voronoiEdges
+    };
+    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
+    return diagram;
+  }
+  function d3_geom_voronoiVertexOrder(a, b) {
+    return b.y - a.y || b.x - a.x;
+  }
+  d3.geom.voronoi = function(points) {
+    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
+    if (points) return voronoi(points);
+    function voronoi(data) {
+      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
+      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
+        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
+          var s = e.start();
+          return [ s.x, s.y ];
+        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
+        polygon.point = data[i];
+      });
+      return polygons;
+    }
+    function sites(data) {
+      return data.map(function(d, i) {
+        return {
+          x: Math.round(fx(d, i) / ε) * ε,
+          y: Math.round(fy(d, i) / ε) * ε,
+          i: i
+        };
+      });
     }
+    voronoi.links = function(data) {
+      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
+        return edge.l && edge.r;
+      }).map(function(edge) {
+        return {
+          source: data[edge.l.i],
+          target: data[edge.r.i]
+        };
+      });
+    };
+    voronoi.triangles = function(data) {
+      var triangles = [];
+      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
+        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
+        while (++j < m) {
+          e0 = e1;
+          s0 = s1;
+          e1 = edges[j].edge;
+          s1 = e1.l === site ? e1.r : e1.l;
+          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
+            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
+          }
+        }
+      });
+      return triangles;
+    };
+    voronoi.x = function(_) {
+      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
+    };
+    voronoi.y = function(_) {
+      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
+    };
+    voronoi.clipExtent = function(_) {
+      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
+      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
+      return voronoi;
+    };
+    voronoi.size = function(_) {
+      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
+      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
+    };
+    return voronoi;
+  };
+  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
+  function d3_geom_voronoiTriangleArea(a, b, c) {
+    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
   }
+  d3.geom.delaunay = function(vertices) {
+    return d3.geom.voronoi().triangles(vertices);
+  };
   d3.geom.quadtree = function(points, x1, y1, x2, y2) {
-    var x = d3_svg_lineX, y = d3_svg_lineY, compat;
+    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
     if (compat = arguments.length) {
       x = d3_geom_quadtreeCompatX;
       y = d3_geom_quadtreeCompatY;
@@ -4539,7 +5592,7 @@ d3 = function() {
         if (n.leaf) {
           var nx = n.x, ny = n.y;
           if (nx != null) {
-            if (Math.abs(nx - x) + Math.abs(ny - y) < .01) {
+            if (abs(nx - x) + abs(ny - y) < .01) {
               insertChild(n, d, x, y, x1, y1, x2, y2);
             } else {
               var nPoint = n.point;
@@ -4555,11 +5608,11 @@ d3 = function() {
         }
       }
       function insertChild(n, d, x, y, x1, y1, x2, y2) {
-        var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, right = x >= sx, bottom = y >= sy, i = (bottom << 1) + right;
+        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
         n.leaf = false;
         n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
-        if (right) x1 = sx; else x2 = sx;
-        if (bottom) y1 = sy; else y2 = sy;
+        if (right) x1 = xm; else x2 = xm;
+        if (below) y1 = ym; else y2 = ym;
         insert(n, d, x, y, x1, y1, x2, y2);
       }
       var root = d3_geom_quadtreeNode();
@@ -4569,6 +5622,9 @@ d3 = function() {
       root.visit = function(f) {
         d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
       };
+      root.find = function(point) {
+        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
+      };
       i = -1;
       if (x1 == null) {
         while (++i < n) {
@@ -4585,14 +5641,15 @@ d3 = function() {
     quadtree.y = function(_) {
       return arguments.length ? (y = _, quadtree) : y;
     };
+    quadtree.extent = function(_) {
+      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
+      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], 
+      y2 = +_[1][1];
+      return quadtree;
+    };
     quadtree.size = function(_) {
-      if (!arguments.length) return x1 == null ? null : [ x2, y2 ];
-      if (_ == null) {
-        x1 = y1 = x2 = y2 = null;
-      } else {
-        x1 = y1 = 0;
-        x2 = +_[0], y2 = +_[1];
-      }
+      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
+      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
       return quadtree;
     };
     return quadtree;
@@ -4621,6 +5678,42 @@ d3 = function() {
       if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
     }
   }
+  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
+    var minDistance2 = Infinity, closestPoint;
+    (function find(node, x1, y1, x2, y2) {
+      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
+      if (point = node.point) {
+        var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
+        if (distance2 < minDistance2) {
+          var distance = Math.sqrt(minDistance2 = distance2);
+          x0 = x - distance, y0 = y - distance;
+          x3 = x + distance, y3 = y + distance;
+          closestPoint = point;
+        }
+      }
+      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
+      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
+        if (node = children[i & 3]) switch (i & 3) {
+         case 0:
+          find(node, x1, y1, xm, ym);
+          break;
+
+         case 1:
+          find(node, xm, y1, x2, ym);
+          break;
+
+         case 2:
+          find(node, x1, ym, xm, y2);
+          break;
+
+         case 3:
+          find(node, xm, ym, x2, y2);
+          break;
+        }
+      }
+    })(root, x0, y0, x3, y3);
+    return closestPoint;
+  }
   d3.interpolateRgb = d3_interpolateRgb;
   function d3_interpolateRgb(a, b) {
     a = d3.rgb(a);
@@ -4630,120 +5723,12 @@ d3 = function() {
       return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
     };
   }
-  d3.transform = function(string) {
-    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
-    return (d3.transform = function(string) {
-      g.setAttribute("transform", string);
-      var t = g.transform.baseVal.consolidate();
-      return new d3_transform(t ? t.matrix : d3_transformIdentity);
-    })(string);
-  };
-  function d3_transform(m) {
-    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
-    if (r0[0] * r1[1] < r1[0] * r0[1]) {
-      r0[0] *= -1;
-      r0[1] *= -1;
-      kx *= -1;
-      kz *= -1;
-    }
-    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
-    this.translate = [ m.e, m.f ];
-    this.scale = [ kx, ky ];
-    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
-  }
-  d3_transform.prototype.toString = function() {
-    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
-  };
-  function d3_transformDot(a, b) {
-    return a[0] * b[0] + a[1] * b[1];
-  }
-  function d3_transformNormalize(a) {
-    var k = Math.sqrt(d3_transformDot(a, a));
-    if (k) {
-      a[0] /= k;
-      a[1] /= k;
-    }
-    return k;
-  }
-  function d3_transformCombine(a, b, k) {
-    a[0] += k * b[0];
-    a[1] += k * b[1];
-    return a;
-  }
-  var d3_transformIdentity = {
-    a: 1,
-    b: 0,
-    c: 0,
-    d: 1,
-    e: 0,
-    f: 0
-  };
-  d3.interpolateNumber = d3_interpolateNumber;
-  function d3_interpolateNumber(a, b) {
-    b -= a = +a;
-    return function(t) {
-      return a + b * t;
-    };
-  }
-  d3.interpolateTransform = d3_interpolateTransform;
-  function d3_interpolateTransform(a, b) {
-    var s = [], q = [], n, A = d3.transform(a), B = d3.transform(b), ta = A.translate, tb = B.translate, ra = A.rotate, rb = B.rotate, wa = A.skew, wb = B.skew, ka = A.scale, kb = B.scale;
-    if (ta[0] != tb[0] || ta[1] != tb[1]) {
-      s.push("translate(", null, ",", null, ")");
-      q.push({
-        i: 1,
-        x: d3_interpolateNumber(ta[0], tb[0])
-      }, {
-        i: 3,
-        x: d3_interpolateNumber(ta[1], tb[1])
-      });
-    } else if (tb[0] || tb[1]) {
-      s.push("translate(" + tb + ")");
-    } else {
-      s.push("");
-    }
-    if (ra != rb) {
-      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
-      q.push({
-        i: s.push(s.pop() + "rotate(", null, ")") - 2,
-        x: d3_interpolateNumber(ra, rb)
-      });
-    } else if (rb) {
-      s.push(s.pop() + "rotate(" + rb + ")");
-    }
-    if (wa != wb) {
-      q.push({
-        i: s.push(s.pop() + "skewX(", null, ")") - 2,
-        x: d3_interpolateNumber(wa, wb)
-      });
-    } else if (wb) {
-      s.push(s.pop() + "skewX(" + wb + ")");
-    }
-    if (ka[0] != kb[0] || ka[1] != kb[1]) {
-      n = s.push(s.pop() + "scale(", null, ",", null, ")");
-      q.push({
-        i: n - 4,
-        x: d3_interpolateNumber(ka[0], kb[0])
-      }, {
-        i: n - 2,
-        x: d3_interpolateNumber(ka[1], kb[1])
-      });
-    } else if (kb[0] != 1 || kb[1] != 1) {
-      s.push(s.pop() + "scale(" + kb + ")");
-    }
-    n = q.length;
-    return function(t) {
-      var i = -1, o;
-      while (++i < n) s[(o = q[i]).i] = o.x(t);
-      return s.join("");
-    };
-  }
   d3.interpolateObject = d3_interpolateObject;
   function d3_interpolateObject(a, b) {
     var i = {}, c = {}, k;
     for (k in a) {
       if (k in b) {
-        i[k] = d3_interpolateByName(k)(a[k], b[k]);
+        i[k] = d3_interpolate(a[k], b[k]);
       } else {
         c[k] = a[k];
       }
@@ -4758,83 +5743,56 @@ d3 = function() {
       return c;
     };
   }
+  d3.interpolateNumber = d3_interpolateNumber;
+  function d3_interpolateNumber(a, b) {
+    a = +a, b = +b;
+    return function(t) {
+      return a * (1 - t) + b * t;
+    };
+  }
   d3.interpolateString = d3_interpolateString;
   function d3_interpolateString(a, b) {
-    var m, i, j, s0 = 0, s1 = 0, s = [], q = [], n, o;
+    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
     a = a + "", b = b + "";
-    d3_interpolate_number.lastIndex = 0;
-    for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
-      if (m.index) s.push(b.substring(s0, s1 = m.index));
-      q.push({
-        i: s.length,
-        x: m[0]
-      });
-      s.push(null);
-      s0 = d3_interpolate_number.lastIndex;
-    }
-    if (s0 < b.length) s.push(b.substring(s0));
-    for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
-      o = q[i];
-      if (o.x == m[0]) {
-        if (o.i) {
-          if (s[o.i + 1] == null) {
-            s[o.i - 1] += o.x;
-            s.splice(o.i, 1);
-            for (j = i + 1; j < n; ++j) q[j].i--;
-          } else {
-            s[o.i - 1] += o.x + s[o.i + 1];
-            s.splice(o.i, 2);
-            for (j = i + 1; j < n; ++j) q[j].i -= 2;
-          }
-        } else {
-          if (s[o.i + 1] == null) {
-            s[o.i] = o.x;
-          } else {
-            s[o.i] = o.x + s[o.i + 1];
-            s.splice(o.i + 1, 1);
-            for (j = i + 1; j < n; ++j) q[j].i--;
-          }
-        }
-        q.splice(i, 1);
-        n--;
-        i--;
-      } else {
-        o.x = d3_interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
+    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
+      if ((bs = bm.index) > bi) {
+        bs = b.slice(bi, bs);
+        if (s[i]) s[i] += bs; else s[++i] = bs;
       }
-    }
-    while (i < n) {
-      o = q.pop();
-      if (s[o.i + 1] == null) {
-        s[o.i] = o.x;
+      if ((am = am[0]) === (bm = bm[0])) {
+        if (s[i]) s[i] += bm; else s[++i] = bm;
       } else {
-        s[o.i] = o.x + s[o.i + 1];
-        s.splice(o.i + 1, 1);
+        s[++i] = null;
+        q.push({
+          i: i,
+          x: d3_interpolateNumber(am, bm)
+        });
       }
-      n--;
+      bi = d3_interpolate_numberB.lastIndex;
     }
-    if (s.length === 1) {
-      return s[0] == null ? q[0].x : function() {
-        return b;
-      };
+    if (bi < b.length) {
+      bs = b.slice(bi);
+      if (s[i]) s[i] += bs; else s[++i] = bs;
     }
-    return function(t) {
-      for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
+    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
+      return b(t) + "";
+    }) : function() {
+      return b;
+    } : (b = q.length, function(t) {
+      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
       return s.join("");
-    };
+    });
   }
-  var d3_interpolate_number = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g;
+  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
   d3.interpolate = d3_interpolate;
   function d3_interpolate(a, b) {
     var i = d3.interpolators.length, f;
     while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
     return f;
   }
-  function d3_interpolateByName(name) {
-    return name == "transform" ? d3_interpolateTransform : d3_interpolate;
-  }
   d3.interpolators = [ function(a, b) {
     var t = typeof b;
-    return (t === "string" || t !== typeof a ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_Color ? d3_interpolateRgb : t === "object" ? Array.isArray(b) ? d3_interpolateArray : d3_interpolateObject : d3_interpolateNumber)(a, b);
+    return (t === "string" ? d3_rgb_names.has(b.toLowerCase()) || /^(#|rgb\(|hsl\()/i.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
   } ];
   d3.interpolateArray = d3_interpolateArray;
   function d3_interpolateArray(a, b) {
@@ -4883,10 +5841,10 @@ d3 = function() {
     }
   });
   d3.ease = function(name) {
-    var i = name.indexOf("-"), t = i >= 0 ? name.substring(0, i) : name, m = i >= 0 ? name.substring(i + 1) : "in";
+    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
     t = d3_ease.get(t) || d3_ease_default;
     m = d3_ease_mode.get(m) || d3_identity;
-    return d3_ease_clamp(m(t.apply(null, Array.prototype.slice.call(arguments, 1))));
+    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
   };
   function d3_ease_clamp(f) {
     return function(t) {
@@ -4921,7 +5879,7 @@ d3 = function() {
     };
   }
   function d3_ease_sin(t) {
-    return 1 - Math.cos(t * π / 2);
+    return 1 - Math.cos(t * halfπ);
   }
   function d3_ease_exp(t) {
     return Math.pow(2, 10 * (t - 1));
@@ -4932,9 +5890,9 @@ d3 = function() {
   function d3_ease_elastic(a, p) {
     var s;
     if (arguments.length < 2) p = .45;
-    if (arguments.length) s = p / (2 * π) * Math.asin(1 / a); else a = 1, s = p / 4;
+    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
     return function(t) {
-      return 1 + a * Math.pow(2, 10 * -t) * Math.sin((t - s) * 2 * π / p);
+      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
     };
   }
   function d3_ease_back(s) {
@@ -4984,16 +5942,133 @@ d3 = function() {
       return Math.round(a + b * t);
     };
   }
+  d3.transform = function(string) {
+    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
+    return (d3.transform = function(string) {
+      if (string != null) {
+        g.setAttribute("transform", string);
+        var t = g.transform.baseVal.consolidate();
+      }
+      return new d3_transform(t ? t.matrix : d3_transformIdentity);
+    })(string);
+  };
+  function d3_transform(m) {
+    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
+    if (r0[0] * r1[1] < r1[0] * r0[1]) {
+      r0[0] *= -1;
+      r0[1] *= -1;
+      kx *= -1;
+      kz *= -1;
+    }
+    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
+    this.translate = [ m.e, m.f ];
+    this.scale = [ kx, ky ];
+    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
+  }
+  d3_transform.prototype.toString = function() {
+    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
+  };
+  function d3_transformDot(a, b) {
+    return a[0] * b[0] + a[1] * b[1];
+  }
+  function d3_transformNormalize(a) {
+    var k = Math.sqrt(d3_transformDot(a, a));
+    if (k) {
+      a[0] /= k;
+      a[1] /= k;
+    }
+    return k;
+  }
+  function d3_transformCombine(a, b, k) {
+    a[0] += k * b[0];
+    a[1] += k * b[1];
+    return a;
+  }
+  var d3_transformIdentity = {
+    a: 1,
+    b: 0,
+    c: 0,
+    d: 1,
+    e: 0,
+    f: 0
+  };
+  d3.interpolateTransform = d3_interpolateTransform;
+  function d3_interpolateTransformPop(s) {
+    return s.length ? s.pop() + "," : "";
+  }
+  function d3_interpolateTranslate(ta, tb, s, q) {
+    if (ta[0] !== tb[0] || ta[1] !== tb[1]) {
+      var i = s.push("translate(", null, ",", null, ")");
+      q.push({
+        i: i - 4,
+        x: d3_interpolateNumber(ta[0], tb[0])
+      }, {
+        i: i - 2,
+        x: d3_interpolateNumber(ta[1], tb[1])
+      });
+    } else if (tb[0] || tb[1]) {
+      s.push("translate(" + tb + ")");
+    }
+  }
+  function d3_interpolateRotate(ra, rb, s, q) {
+    if (ra !== rb) {
+      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
+      q.push({
+        i: s.push(d3_interpolateTransformPop(s) + "rotate(", null, ")") - 2,
+        x: d3_interpolateNumber(ra, rb)
+      });
+    } else if (rb) {
+      s.push(d3_interpolateTransformPop(s) + "rotate(" + rb + ")");
+    }
+  }
+  function d3_interpolateSkew(wa, wb, s, q) {
+    if (wa !== wb) {
+      q.push({
+        i: s.push(d3_interpolateTransformPop(s) + "skewX(", null, ")") - 2,
+        x: d3_interpolateNumber(wa, wb)
+      });
+    } else if (wb) {
+      s.push(d3_interpolateTransformPop(s) + "skewX(" + wb + ")");
+    }
+  }
+  function d3_interpolateScale(ka, kb, s, q) {
+    if (ka[0] !== kb[0] || ka[1] !== kb[1]) {
+      var i = s.push(d3_interpolateTransformPop(s) + "scale(", null, ",", null, ")");
+      q.push({
+        i: i - 4,
+        x: d3_interpolateNumber(ka[0], kb[0])
+      }, {
+        i: i - 2,
+        x: d3_interpolateNumber(ka[1], kb[1])
+      });
+    } else if (kb[0] !== 1 || kb[1] !== 1) {
+      s.push(d3_interpolateTransformPop(s) + "scale(" + kb + ")");
+    }
+  }
+  function d3_interpolateTransform(a, b) {
+    var s = [], q = [];
+    a = d3.transform(a), b = d3.transform(b);
+    d3_interpolateTranslate(a.translate, b.translate, s, q);
+    d3_interpolateRotate(a.rotate, b.rotate, s, q);
+    d3_interpolateSkew(a.skew, b.skew, s, q);
+    d3_interpolateScale(a.scale, b.scale, s, q);
+    a = b = null;
+    return function(t) {
+      var i = -1, n = q.length, o;
+      while (++i < n) s[(o = q[i]).i] = o.x(t);
+      return s.join("");
+    };
+  }
   function d3_uninterpolateNumber(a, b) {
-    b = b - (a = +a) ? 1 / (b - a) : 0;
+    b = (b -= a = +a) || 1 / b;
     return function(x) {
-      return (x - a) * b;
+      return (x - a) / b;
     };
   }
   function d3_uninterpolateClamp(a, b) {
-    b = b - (a = +a) ? 1 / (b - a) : 0;
+    b = (b -= a = +a) || 1 / b;
     return function(x) {
-      return Math.max(0, Math.min(1, (x - a) * b));
+      return Math.max(0, Math.min(1, (x - a) / b));
     };
   }
   d3.layout = {};
@@ -5065,7 +6140,7 @@ d3 = function() {
           });
         });
       }
-      k = (2 * π - padding * n) / k;
+      k = (τ - padding * n) / k;
       x = 0, i = -1;
       while (++i < n) {
         x0 = x, j = -1;
@@ -5083,7 +6158,7 @@ d3 = function() {
           index: di,
           startAngle: x0,
           endAngle: x,
-          value: (x - x0) / k
+          value: groupSums[di]
         };
         x += padding;
       }
@@ -5151,19 +6226,21 @@ d3 = function() {
     return chord;
   };
   d3.layout.force = function() {
-    var force = {}, event = d3.dispatch("start", "tick", "end"), size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, gravity = .1, theta = .8, nodes = [], links = [], distances, strengths, charges;
+    var force = {}, event = d3.dispatch("start", "tick", "end"), timer, size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
     function repulse(node) {
       return function(quad, x1, _, x2) {
         if (quad.point !== node) {
-          var dx = quad.cx - node.x, dy = quad.cy - node.y, dn = 1 / Math.sqrt(dx * dx + dy * dy);
-          if ((x2 - x1) * dn < theta) {
-            var k = quad.charge * dn * dn;
-            node.px -= dx * k;
-            node.py -= dy * k;
+          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
+          if (dw * dw / theta2 < dn) {
+            if (dn < chargeDistance2) {
+              var k = quad.charge / dn;
+              node.px -= dx * k;
+              node.py -= dy * k;
+            }
             return true;
           }
-          if (quad.point && isFinite(dn)) {
-            var k = quad.pointCharge * dn * dn;
+          if (quad.point && dn && dn < chargeDistance2) {
+            var k = quad.pointCharge / dn;
             node.px -= dx * k;
             node.py -= dy * k;
           }
@@ -5173,6 +6250,7 @@ d3 = function() {
     }
     force.tick = function() {
       if ((alpha *= .99) < .005) {
+        timer = null;
         event.end({
           type: "end",
           alpha: alpha = 0
@@ -5190,7 +6268,7 @@ d3 = function() {
           l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
           x *= l;
           y *= l;
-          t.x -= x * (k = s.weight / (t.weight + s.weight));
+          t.x -= x * (k = s.weight + t.weight ? s.weight / (s.weight + t.weight) : .5);
           t.y -= y * k;
           s.x += x * (k = 1 - k);
           s.y += y * k;
@@ -5267,32 +6345,45 @@ d3 = function() {
       charge = typeof x === "function" ? x : +x;
       return force;
     };
+    force.chargeDistance = function(x) {
+      if (!arguments.length) return Math.sqrt(chargeDistance2);
+      chargeDistance2 = x * x;
+      return force;
+    };
     force.gravity = function(x) {
       if (!arguments.length) return gravity;
       gravity = +x;
       return force;
     };
     force.theta = function(x) {
-      if (!arguments.length) return theta;
-      theta = +x;
+      if (!arguments.length) return Math.sqrt(theta2);
+      theta2 = x * x;
       return force;
     };
     force.alpha = function(x) {
       if (!arguments.length) return alpha;
       x = +x;
       if (alpha) {
-        if (x > 0) alpha = x; else alpha = 0;
+        if (x > 0) {
+          alpha = x;
+        } else {
+          timer.c = null, timer.t = NaN, timer = null;
+          event.end({
+            type: "end",
+            alpha: alpha = 0
+          });
+        }
       } else if (x > 0) {
         event.start({
           type: "start",
           alpha: alpha = x
         });
-        d3.timer(force.tick);
+        timer = d3_timer(force.tick);
       }
       return force;
     };
     force.start = function() {
-      var i, j, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
+      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
       for (i = 0; i < n; ++i) {
         (o = nodes[i]).index = i;
         o.weight = 0;
@@ -5318,13 +6409,8 @@ d3 = function() {
       charges = [];
       if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
       function position(dimension, size) {
-        var neighbors = neighbor(i), j = -1, m = neighbors.length, x;
-        while (++j < m) if (!isNaN(x = neighbors[j][dimension])) return x;
-        return Math.random() * size;
-      }
-      function neighbor() {
         if (!neighbors) {
-          neighbors = [];
+          neighbors = new Array(n);
           for (j = 0; j < n; ++j) {
             neighbors[j] = [];
           }
@@ -5334,7 +6420,9 @@ d3 = function() {
             neighbors[o.target.index].push(o.source);
           }
         }
-        return neighbors[i];
+        var candidates = neighbors[i], j = -1, l = candidates.length, x;
+        while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
+        return Math.random() * size;
       }
       return force.resume();
     };
@@ -5395,42 +6483,33 @@ d3 = function() {
     quad.cx = cx / quad.charge;
     quad.cy = cy / quad.charge;
   }
-  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1;
+  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
   d3.layout.hierarchy = function() {
     var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
-    function recurse(node, depth, nodes) {
-      var childs = children.call(hierarchy, node, depth);
-      node.depth = depth;
-      nodes.push(node);
-      if (childs && (n = childs.length)) {
-        var i = -1, n, c = node.children = [], v = 0, j = depth + 1, d;
-        while (++i < n) {
-          d = recurse(childs[i], j, nodes);
-          d.parent = node;
-          c.push(d);
-          v += d.value;
+    function hierarchy(root) {
+      var stack = [ root ], nodes = [], node;
+      root.depth = 0;
+      while ((node = stack.pop()) != null) {
+        nodes.push(node);
+        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
+          var n, childs, child;
+          while (--n >= 0) {
+            stack.push(child = childs[n]);
+            child.parent = node;
+            child.depth = node.depth + 1;
+          }
+          if (value) node.value = 0;
+          node.children = childs;
+        } else {
+          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
+          delete node.children;
         }
-        if (sort) c.sort(sort);
-        if (value) node.value = v;
-      } else if (value) {
-        node.value = +value.call(hierarchy, node, depth) || 0;
       }
-      return node;
-    }
-    function revalue(node, depth) {
-      var children = node.children, v = 0;
-      if (children && (n = children.length)) {
-        var i = -1, n, j = depth + 1;
-        while (++i < n) v += revalue(children[i], j);
-      } else if (value) {
-        v = +value.call(hierarchy, node, depth) || 0;
-      }
-      if (value) node.value = v;
-      return v;
-    }
-    function hierarchy(d) {
-      var nodes = [];
-      recurse(d, 0, nodes);
+      d3_layout_hierarchyVisitAfter(root, function(node) {
+        var childs, parent;
+        if (sort && (childs = node.children)) childs.sort(sort);
+        if (value && (parent = node.parent)) parent.value += node.value;
+      });
       return nodes;
     }
     hierarchy.sort = function(x) {
@@ -5449,7 +6528,16 @@ d3 = function() {
       return hierarchy;
     };
     hierarchy.revalue = function(root) {
-      revalue(root, 0);
+      if (value) {
+        d3_layout_hierarchyVisitBefore(root, function(node) {
+          if (node.children) node.value = 0;
+        });
+        d3_layout_hierarchyVisitAfter(root, function(node) {
+          var parent;
+          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
+          if (parent = node.parent) parent.value += node.value;
+        });
+      }
       return root;
     };
     return hierarchy;
@@ -5460,6 +6548,29 @@ d3 = function() {
     object.links = d3_layout_hierarchyLinks;
     return object;
   }
+  function d3_layout_hierarchyVisitBefore(node, callback) {
+    var nodes = [ node ];
+    while ((node = nodes.pop()) != null) {
+      callback(node);
+      if ((children = node.children) && (n = children.length)) {
+        var n, children;
+        while (--n >= 0) nodes.push(children[n]);
+      }
+    }
+  }
+  function d3_layout_hierarchyVisitAfter(node, callback) {
+    var nodes = [ node ], nodes2 = [];
+    while ((node = nodes.pop()) != null) {
+      nodes2.push(node);
+      if ((children = node.children) && (n = children.length)) {
+        var i = -1, n, children;
+        while (++i < n) nodes.push(children[i]);
+      }
+    }
+    while ((node = nodes2.pop()) != null) {
+      callback(node);
+    }
+  }
   function d3_layout_hierarchyChildren(d) {
     return d.children;
   }
@@ -5517,49 +6628,50 @@ d3 = function() {
     return d3_layout_hierarchyRebind(partition, hierarchy);
   };
   d3.layout.pie = function() {
-    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = 2 * π;
+    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
     function pie(data) {
-      var values = data.map(function(d, i) {
+      var n = data.length, values = data.map(function(d, i) {
         return +value.call(pie, d, i);
-      });
-      var a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle);
-      var k = ((typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a) / d3.sum(values);
-      var index = d3.range(data.length);
+      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), sum = d3.sum(values), k = sum ? (da - n * pa) / sum : 0, index = d3.range(n), arcs = [], v;
       if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
         return values[j] - values[i];
       } : function(i, j) {
         return sort(data[i], data[j]);
       });
-      var arcs = [];
       index.forEach(function(i) {
-        var d;
         arcs[i] = {
           data: data[i],
-          value: d = values[i],
+          value: v = values[i],
           startAngle: a,
-          endAngle: a += d * k
+          endAngle: a += v * k + pa,
+          padAngle: p
         };
       });
       return arcs;
     }
-    pie.value = function(x) {
+    pie.value = function(_) {
       if (!arguments.length) return value;
-      value = x;
+      value = _;
       return pie;
     };
-    pie.sort = function(x) {
+    pie.sort = function(_) {
       if (!arguments.length) return sort;
-      sort = x;
+      sort = _;
       return pie;
     };
-    pie.startAngle = function(x) {
+    pie.startAngle = function(_) {
       if (!arguments.length) return startAngle;
-      startAngle = x;
+      startAngle = _;
       return pie;
     };
-    pie.endAngle = function(x) {
+    pie.endAngle = function(_) {
       if (!arguments.length) return endAngle;
-      endAngle = x;
+      endAngle = _;
+      return pie;
+    };
+    pie.padAngle = function(_) {
+      if (!arguments.length) return padAngle;
+      padAngle = _;
       return pie;
     };
     return pie;
@@ -5568,6 +6680,7 @@ d3 = function() {
   d3.layout.stack = function() {
     var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
     function stack(data, index) {
+      if (!(n = data.length)) return data;
       var series = data.map(function(d, i) {
         return values.call(stack, d, i);
       });
@@ -5580,7 +6693,7 @@ d3 = function() {
       series = d3.permute(series, orders);
       points = d3.permute(points, orders);
       var offsets = offset.call(stack, points, index);
-      var n = series.length, m = series[0].length, i, j, o;
+      var m = series[0].length, n, i, j, o;
       for (j = 0; j < m; ++j) {
         out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
         for (i = 1; i < n; ++i) {
@@ -5775,204 +6888,38 @@ d3 = function() {
   function d3_layout_histogramRange(values) {
     return [ d3.min(values), d3.max(values) ];
   }
-  d3.layout.tree = function() {
-    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ];
-    function tree(d, i) {
-      var nodes = hierarchy.call(this, d, i), root = nodes[0];
-      function firstWalk(node, previousSibling) {
-        var children = node.children, layout = node._tree;
-        if (children && (n = children.length)) {
-          var n, firstChild = children[0], previousChild, ancestor = firstChild, child, i = -1;
-          while (++i < n) {
-            child = children[i];
-            firstWalk(child, previousChild);
-            ancestor = apportion(child, previousChild, ancestor);
-            previousChild = child;
-          }
-          d3_layout_treeShift(node);
-          var midpoint = .5 * (firstChild._tree.prelim + child._tree.prelim);
-          if (previousSibling) {
-            layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
-            layout.mod = layout.prelim - midpoint;
-          } else {
-            layout.prelim = midpoint;
-          }
-        } else {
-          if (previousSibling) {
-            layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
-          }
-        }
-      }
-      function secondWalk(node, x) {
-        node.x = node._tree.prelim + x;
-        var children = node.children;
-        if (children && (n = children.length)) {
-          var i = -1, n;
-          x += node._tree.mod;
-          while (++i < n) {
-            secondWalk(children[i], x);
-          }
-        }
-      }
-      function apportion(node, previousSibling, ancestor) {
-        if (previousSibling) {
-          var vip = node, vop = node, vim = previousSibling, vom = node.parent.children[0], sip = vip._tree.mod, sop = vop._tree.mod, sim = vim._tree.mod, som = vom._tree.mod, shift;
-          while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
-            vom = d3_layout_treeLeft(vom);
-            vop = d3_layout_treeRight(vop);
-            vop._tree.ancestor = node;
-            shift = vim._tree.prelim + sim - vip._tree.prelim - sip + separation(vim, vip);
-            if (shift > 0) {
-              d3_layout_treeMove(d3_layout_treeAncestor(vim, node, ancestor), node, shift);
-              sip += shift;
-              sop += shift;
-            }
-            sim += vim._tree.mod;
-            sip += vip._tree.mod;
-            som += vom._tree.mod;
-            sop += vop._tree.mod;
-          }
-          if (vim && !d3_layout_treeRight(vop)) {
-            vop._tree.thread = vim;
-            vop._tree.mod += sim - sop;
-          }
-          if (vip && !d3_layout_treeLeft(vom)) {
-            vom._tree.thread = vip;
-            vom._tree.mod += sip - som;
-            ancestor = node;
-          }
-        }
-        return ancestor;
-      }
-      d3_layout_treeVisitAfter(root, function(node, previousSibling) {
-        node._tree = {
-          ancestor: node,
-          prelim: 0,
-          mod: 0,
-          change: 0,
-          shift: 0,
-          number: previousSibling ? previousSibling._tree.number + 1 : 0
-        };
-      });
-      firstWalk(root);
-      secondWalk(root, -root._tree.prelim);
-      var left = d3_layout_treeSearch(root, d3_layout_treeLeftmost), right = d3_layout_treeSearch(root, d3_layout_treeRightmost), deep = d3_layout_treeSearch(root, d3_layout_treeDeepest), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2, y1 = deep.depth || 1;
-      d3_layout_treeVisitAfter(root, function(node) {
-        node.x = (node.x - x0) / (x1 - x0) * size[0];
-        node.y = node.depth / y1 * size[1];
-        delete node._tree;
-      });
-      return nodes;
-    }
-    tree.separation = function(x) {
-      if (!arguments.length) return separation;
-      separation = x;
-      return tree;
-    };
-    tree.size = function(x) {
-      if (!arguments.length) return size;
-      size = x;
-      return tree;
-    };
-    return d3_layout_hierarchyRebind(tree, hierarchy);
-  };
-  function d3_layout_treeSeparation(a, b) {
-    return a.parent == b.parent ? 1 : 2;
-  }
-  function d3_layout_treeLeft(node) {
-    var children = node.children;
-    return children && children.length ? children[0] : node._tree.thread;
-  }
-  function d3_layout_treeRight(node) {
-    var children = node.children, n;
-    return children && (n = children.length) ? children[n - 1] : node._tree.thread;
-  }
-  function d3_layout_treeSearch(node, compare) {
-    var children = node.children;
-    if (children && (n = children.length)) {
-      var child, n, i = -1;
-      while (++i < n) {
-        if (compare(child = d3_layout_treeSearch(children[i], compare), node) > 0) {
-          node = child;
-        }
-      }
-    }
-    return node;
-  }
-  function d3_layout_treeRightmost(a, b) {
-    return a.x - b.x;
-  }
-  function d3_layout_treeLeftmost(a, b) {
-    return b.x - a.x;
-  }
-  function d3_layout_treeDeepest(a, b) {
-    return a.depth - b.depth;
-  }
-  function d3_layout_treeVisitAfter(node, callback) {
-    function visit(node, previousSibling) {
-      var children = node.children;
-      if (children && (n = children.length)) {
-        var child, previousChild = null, i = -1, n;
-        while (++i < n) {
-          child = children[i];
-          visit(child, previousChild);
-          previousChild = child;
-        }
-      }
-      callback(node, previousSibling);
-    }
-    visit(node, null);
-  }
-  function d3_layout_treeShift(node) {
-    var shift = 0, change = 0, children = node.children, i = children.length, child;
-    while (--i >= 0) {
-      child = children[i]._tree;
-      child.prelim += shift;
-      child.mod += shift;
-      shift += child.shift + (change += child.change);
-    }
-  }
-  function d3_layout_treeMove(ancestor, node, shift) {
-    ancestor = ancestor._tree;
-    node = node._tree;
-    var change = shift / (node.number - ancestor.number);
-    ancestor.change += change;
-    node.change -= change;
-    node.shift += shift;
-    node.prelim += shift;
-    node.mod += shift;
-  }
-  function d3_layout_treeAncestor(vim, node, ancestor) {
-    return vim._tree.ancestor.parent == node.parent ? vim._tree.ancestor : ancestor;
-  }
   d3.layout.pack = function() {
-    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ];
+    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
     function pack(d, i) {
-      var nodes = hierarchy.call(this, d, i), root = nodes[0];
-      root.x = 0;
-      root.y = 0;
-      d3_layout_treeVisitAfter(root, function(d) {
-        d.r = Math.sqrt(d.value);
+      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
+        return radius;
+      };
+      root.x = root.y = 0;
+      d3_layout_hierarchyVisitAfter(root, function(d) {
+        d.r = +r(d.value);
       });
-      d3_layout_treeVisitAfter(root, d3_layout_packSiblings);
-      var w = size[0], h = size[1], k = Math.max(2 * root.r / w, 2 * root.r / h);
-      if (padding > 0) {
-        var dr = padding * k / 2;
-        d3_layout_treeVisitAfter(root, function(d) {
+      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
+      if (padding) {
+        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
+        d3_layout_hierarchyVisitAfter(root, function(d) {
           d.r += dr;
         });
-        d3_layout_treeVisitAfter(root, d3_layout_packSiblings);
-        d3_layout_treeVisitAfter(root, function(d) {
+        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
+        d3_layout_hierarchyVisitAfter(root, function(d) {
           d.r -= dr;
         });
-        k = Math.max(2 * root.r / w, 2 * root.r / h);
       }
-      d3_layout_packTransform(root, w / 2, h / 2, 1 / k);
+      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
       return nodes;
     }
-    pack.size = function(x) {
+    pack.size = function(_) {
       if (!arguments.length) return size;
-      size = x;
+      size = _;
+      return pack;
+    };
+    pack.radius = function(_) {
+      if (!arguments.length) return radius;
+      radius = _ == null || typeof _ === "function" ? _ : +_;
       return pack;
     };
     pack.padding = function(_) {
@@ -5998,7 +6945,7 @@ d3 = function() {
   }
   function d3_layout_packIntersects(a, b) {
     var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
-    return dr * dr - dx * dx - dy * dy > .001;
+    return .999 * dr * dr > dx * dx + dy * dy;
   }
   function d3_layout_packSiblings(node) {
     if (!(nodes = node.children) || !(n = nodes.length)) return;
@@ -6095,11 +7042,158 @@ d3 = function() {
       c.y = a.y;
     }
   }
+  d3.layout.tree = function() {
+    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
+    function tree(d, i) {
+      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
+      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
+      d3_layout_hierarchyVisitBefore(root1, secondWalk);
+      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
+        var left = root0, right = root0, bottom = root0;
+        d3_layout_hierarchyVisitBefore(root0, function(node) {
+          if (node.x < left.x) left = node;
+          if (node.x > right.x) right = node;
+          if (node.depth > bottom.depth) bottom = node;
+        });
+        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
+        d3_layout_hierarchyVisitBefore(root0, function(node) {
+          node.x = (node.x + tx) * kx;
+          node.y = node.depth * ky;
+        });
+      }
+      return nodes;
+    }
+    function wrapTree(root0) {
+      var root1 = {
+        A: null,
+        children: [ root0 ]
+      }, queue = [ root1 ], node1;
+      while ((node1 = queue.pop()) != null) {
+        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
+          queue.push((children[i] = child = {
+            _: children[i],
+            parent: node1,
+            children: (child = children[i].children) && child.slice() || [],
+            A: null,
+            a: null,
+            z: 0,
+            m: 0,
+            c: 0,
+            s: 0,
+            t: null,
+            i: i
+          }).a = child);
+        }
+      }
+      return root1.children[0];
+    }
+    function firstWalk(v) {
+      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
+      if (children.length) {
+        d3_layout_treeShift(v);
+        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
+        if (w) {
+          v.z = w.z + separation(v._, w._);
+          v.m = v.z - midpoint;
+        } else {
+          v.z = midpoint;
+        }
+      } else if (w) {
+        v.z = w.z + separation(v._, w._);
+      }
+      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
+    }
+    function secondWalk(v) {
+      v._.x = v.z + v.parent.m;
+      v.m += v.parent.m;
+    }
+    function apportion(v, w, ancestor) {
+      if (w) {
+        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
+        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
+          vom = d3_layout_treeLeft(vom);
+          vop = d3_layout_treeRight(vop);
+          vop.a = v;
+          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
+          if (shift > 0) {
+            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
+            sip += shift;
+            sop += shift;
+          }
+          sim += vim.m;
+          sip += vip.m;
+          som += vom.m;
+          sop += vop.m;
+        }
+        if (vim && !d3_layout_treeRight(vop)) {
+          vop.t = vim;
+          vop.m += sim - sop;
+        }
+        if (vip && !d3_layout_treeLeft(vom)) {
+          vom.t = vip;
+          vom.m += sip - som;
+          ancestor = v;
+        }
+      }
+      return ancestor;
+    }
+    function sizeNode(node) {
+      node.x *= size[0];
+      node.y = node.depth * size[1];
+    }
+    tree.separation = function(x) {
+      if (!arguments.length) return separation;
+      separation = x;
+      return tree;
+    };
+    tree.size = function(x) {
+      if (!arguments.length) return nodeSize ? null : size;
+      nodeSize = (size = x) == null ? sizeNode : null;
+      return tree;
+    };
+    tree.nodeSize = function(x) {
+      if (!arguments.length) return nodeSize ? size : null;
+      nodeSize = (size = x) == null ? null : sizeNode;
+      return tree;
+    };
+    return d3_layout_hierarchyRebind(tree, hierarchy);
+  };
+  function d3_layout_treeSeparation(a, b) {
+    return a.parent == b.parent ? 1 : 2;
+  }
+  function d3_layout_treeLeft(v) {
+    var children = v.children;
+    return children.length ? children[0] : v.t;
+  }
+  function d3_layout_treeRight(v) {
+    var children = v.children, n;
+    return (n = children.length) ? children[n - 1] : v.t;
+  }
+  function d3_layout_treeMove(wm, wp, shift) {
+    var change = shift / (wp.i - wm.i);
+    wp.c -= change;
+    wp.s += shift;
+    wm.c += change;
+    wp.z += shift;
+    wp.m += shift;
+  }
+  function d3_layout_treeShift(v) {
+    var shift = 0, change = 0, children = v.children, i = children.length, w;
+    while (--i >= 0) {
+      w = children[i];
+      w.z += shift;
+      w.m += shift;
+      shift += w.s + (change += w.c);
+    }
+  }
+  function d3_layout_treeAncestor(vim, v, ancestor) {
+    return vim.a.parent === v.parent ? vim.a : ancestor;
+  }
   d3.layout.cluster = function() {
-    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ];
+    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
     function cluster(d, i) {
       var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
-      d3_layout_treeVisitAfter(root, function(node) {
+      d3_layout_hierarchyVisitAfter(root, function(node) {
         var children = node.children;
         if (children && children.length) {
           node.x = d3_layout_clusterX(children);
@@ -6111,7 +7205,10 @@ d3 = function() {
         }
       });
       var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
-      d3_layout_treeVisitAfter(root, function(node) {
+      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
+        node.x = (node.x - root.x) * size[0];
+        node.y = (root.y - node.y) * size[1];
+      } : function(node) {
         node.x = (node.x - x0) / (x1 - x0) * size[0];
         node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
       });
@@ -6123,8 +7220,13 @@ d3 = function() {
       return cluster;
     };
     cluster.size = function(x) {
-      if (!arguments.length) return size;
-      size = x;
+      if (!arguments.length) return nodeSize ? null : size;
+      nodeSize = (size = x) == null;
+      return cluster;
+    };
+    cluster.nodeSize = function(x) {
+      if (!arguments.length) return nodeSize ? size : null;
+      nodeSize = (size = x) != null;
       return cluster;
     };
     return d3_layout_hierarchyRebind(cluster, hierarchy);
@@ -6243,10 +7345,8 @@ d3 = function() {
     }
     function treemap(d) {
       var nodes = stickies || hierarchy(d), root = nodes[0];
-      root.x = 0;
-      root.y = 0;
-      root.dx = size[0];
-      root.dy = size[1];
+      root.x = root.y = 0;
+      if (root.value) root.dx = size[0], root.dy = size[1]; else root.dx = root.dy = 0;
       if (stickies) hierarchy.revalue(root);
       scale([ root ], root.dx * root.dy / root.value);
       (stickies ? stickify : squarify)(root);
@@ -6341,10 +7441,16 @@ d3 = function() {
         return Math.exp(random());
       };
     },
+    bates: function(m) {
+      var random = d3.random.irwinHall(m);
+      return function() {
+        return random() / m;
+      };
+    },
     irwinHall: function(m) {
       return function() {
         for (var s = 0, j = 0; j < m; j++) s += Math.random();
-        return s / m;
+        return s;
       };
     }
   };
@@ -6368,12 +7474,24 @@ d3 = function() {
       dx = i0, i0 = i1, i1 = dx;
       dx = x0, x0 = x1, x1 = dx;
     }
-    if (nice = nice(x1 - x0)) {
-      domain[i0] = nice.floor(x0);
-      domain[i1] = nice.ceil(x1);
-    }
+    domain[i0] = nice.floor(x0);
+    domain[i1] = nice.ceil(x1);
     return domain;
   }
+  function d3_scale_niceStep(step) {
+    return step ? {
+      floor: function(x) {
+        return Math.floor(x / step) * step;
+      },
+      ceil: function(x) {
+        return Math.ceil(x / step) * step;
+      }
+    } : d3_scale_niceIdentity;
+  }
+  var d3_scale_niceIdentity = {
+    floor: d3_identity,
+    ceil: d3_identity
+  };
   function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
     var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
     if (domain[k] < domain[0]) {
@@ -6435,8 +7553,8 @@ d3 = function() {
     scale.tickFormat = function(m, format) {
       return d3_scale_linearTickFormat(domain, m, format);
     };
-    scale.nice = function() {
-      d3_scale_nice(domain, d3_scale_linearNice);
+    scale.nice = function(m) {
+      d3_scale_linearNice(domain, m);
       return rescale();
     };
     scale.copy = function() {
@@ -6447,18 +7565,13 @@ d3 = function() {
   function d3_scale_linearRebind(scale, linear) {
     return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
   }
-  function d3_scale_linearNice(dx) {
-    dx = Math.pow(10, Math.round(Math.log(dx) / Math.LN10) - 1);
-    return dx && {
-      floor: function(x) {
-        return Math.floor(x / dx) * dx;
-      },
-      ceil: function(x) {
-        return Math.ceil(x / dx) * dx;
-      }
-    };
+  function d3_scale_linearNice(domain, m) {
+    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
+    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
+    return domain;
   }
   function d3_scale_linearTickRange(domain, m) {
+    if (m == null) m = 10;
     var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
     if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
     extent[0] = Math.ceil(extent[0] / step) * step;
@@ -6470,15 +7583,50 @@ d3 = function() {
     return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
   }
   function d3_scale_linearTickFormat(domain, m, format) {
-    var precision = -Math.floor(Math.log(d3_scale_linearTickRange(domain, m)[2]) / Math.LN10 + .01);
-    return d3.format(format ? format.replace(d3_format_re, function(a, b, c, d, e, f, g, h, i, j) {
-      return [ b, c, d, e, f, g, h, i || "." + (precision - (j === "%") * 2), j ].join("");
-    }) : ",." + precision + "f");
+    var range = d3_scale_linearTickRange(domain, m);
+    if (format) {
+      var match = d3_format_re.exec(format);
+      match.shift();
+      if (match[8] === "s") {
+        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
+        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
+        match[8] = "f";
+        format = d3.format(match.join(""));
+        return function(d) {
+          return format(prefix.scale(d)) + prefix.symbol;
+        };
+      }
+      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
+      format = match.join("");
+    } else {
+      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
+    }
+    return d3.format(format);
+  }
+  var d3_scale_linearFormatSignificant = {
+    s: 1,
+    g: 1,
+    p: 1,
+    r: 1,
+    e: 1
+  };
+  function d3_scale_linearPrecision(value) {
+    return -Math.floor(Math.log(value) / Math.LN10 + .01);
+  }
+  function d3_scale_linearFormatPrecision(type, range) {
+    var p = d3_scale_linearPrecision(range[2]);
+    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
   }
   d3.scale.log = function() {
-    return d3_scale_log(d3.scale.linear().domain([ 0, Math.LN10 ]), 10, d3_scale_logp, d3_scale_powp);
+    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
   };
-  function d3_scale_log(linear, base, log, pow) {
+  function d3_scale_log(linear, base, positive, domain) {
+    function log(x) {
+      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
+    }
+    function pow(x) {
+      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
+    }
     function scale(x) {
       return linear(log(x));
     }
@@ -6486,31 +7634,32 @@ d3 = function() {
       return pow(linear.invert(x));
     };
     scale.domain = function(x) {
-      if (!arguments.length) return linear.domain().map(pow);
-      if (x[0] < 0) log = d3_scale_logn, pow = d3_scale_pown; else log = d3_scale_logp, 
-      pow = d3_scale_powp;
-      linear.domain(x.map(log));
+      if (!arguments.length) return domain;
+      positive = x[0] >= 0;
+      linear.domain((domain = x.map(Number)).map(log));
       return scale;
     };
     scale.base = function(_) {
       if (!arguments.length) return base;
       base = +_;
+      linear.domain(domain.map(log));
       return scale;
     };
     scale.nice = function() {
-      linear.domain(d3_scale_nice(linear.domain(), d3_scale_logNice(base)));
+      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
+      linear.domain(niced);
+      domain = niced.map(pow);
       return scale;
     };
     scale.ticks = function() {
-      var extent = d3_scaleExtent(linear.domain()), ticks = [];
-      if (extent.every(isFinite)) {
-        var b = Math.log(base), i = Math.floor(extent[0] / b), j = Math.ceil(extent[1] / b), u = pow(extent[0]), v = pow(extent[1]), n = base % 1 ? 2 : base;
-        if (log === d3_scale_logn) {
-          ticks.push(-Math.pow(base, -i));
-          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(-Math.pow(base, -i) * k);
+      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
+      if (isFinite(j - i)) {
+        if (positive) {
+          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
+          ticks.push(pow(i));
         } else {
-          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(Math.pow(base, i) * k);
-          ticks.push(Math.pow(base, i));
+          ticks.push(pow(i));
+          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
         }
         for (i = 0; ticks[i] < u; i++) {}
         for (j = ticks.length; ticks[j - 1] > v; j--) {}
@@ -6519,50 +7668,32 @@ d3 = function() {
       return ticks;
     };
     scale.tickFormat = function(n, format) {
-      if (arguments.length < 2) format = d3_scale_logFormat;
-      if (!arguments.length) return format;
-      var b = Math.log(base), k = Math.max(.1, n / scale.ticks().length), f = log === d3_scale_logn ? (e = -1e-12, 
-      Math.floor) : (e = 1e-12, Math.ceil), e;
+      if (!arguments.length) return d3_scale_logFormat;
+      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
+      var k = Math.max(1, base * n / scale.ticks().length);
       return function(d) {
-        return d / pow(b * f(log(d) / b + e)) <= k ? format(d) : "";
+        var i = d / pow(Math.round(log(d)));
+        if (i * base < base - .5) i *= base;
+        return i <= k ? format(d) : "";
       };
     };
     scale.copy = function() {
-      return d3_scale_log(linear.copy(), base, log, pow);
+      return d3_scale_log(linear.copy(), base, positive, domain);
     };
     return d3_scale_linearRebind(scale, linear);
   }
-  var d3_scale_logFormat = d3.format(".0e");
-  function d3_scale_logp(x) {
-    return Math.log(x < 0 ? 0 : x);
-  }
-  function d3_scale_powp(x) {
-    return Math.exp(x);
-  }
-  function d3_scale_logn(x) {
-    return -Math.log(x > 0 ? 0 : -x);
-  }
-  function d3_scale_pown(x) {
-    return -Math.exp(-x);
-  }
-  function d3_scale_logNice(base) {
-    base = Math.log(base);
-    var nice = {
-      floor: function(x) {
-        return Math.floor(x / base) * base;
-      },
-      ceil: function(x) {
-        return Math.ceil(x / base) * base;
-      }
-    };
-    return function() {
-      return nice;
-    };
-  }
+  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
+    floor: function(x) {
+      return -Math.ceil(-x);
+    },
+    ceil: function(x) {
+      return -Math.floor(-x);
+    }
+  };
   d3.scale.pow = function() {
-    return d3_scale_pow(d3.scale.linear(), 1);
+    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
   };
-  function d3_scale_pow(linear, exponent) {
+  function d3_scale_pow(linear, exponent, domain) {
     var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
     function scale(x) {
       return linear(powp(x));
@@ -6571,28 +7702,28 @@ d3 = function() {
       return powb(linear.invert(x));
     };
     scale.domain = function(x) {
-      if (!arguments.length) return linear.domain().map(powb);
-      linear.domain(x.map(powp));
+      if (!arguments.length) return domain;
+      linear.domain((domain = x.map(Number)).map(powp));
       return scale;
     };
     scale.ticks = function(m) {
-      return d3_scale_linearTicks(scale.domain(), m);
+      return d3_scale_linearTicks(domain, m);
     };
     scale.tickFormat = function(m, format) {
-      return d3_scale_linearTickFormat(scale.domain(), m, format);
+      return d3_scale_linearTickFormat(domain, m, format);
     };
-    scale.nice = function() {
-      return scale.domain(d3_scale_nice(scale.domain(), d3_scale_linearNice));
+    scale.nice = function(m) {
+      return scale.domain(d3_scale_linearNice(domain, m));
     };
     scale.exponent = function(x) {
       if (!arguments.length) return exponent;
-      var domain = scale.domain();
       powp = d3_scale_powPow(exponent = x);
       powb = d3_scale_powPow(1 / exponent);
-      return scale.domain(domain);
+      linear.domain(domain.map(powp));
+      return scale;
     };
     scale.copy = function() {
-      return d3_scale_pow(linear.copy(), exponent);
+      return d3_scale_pow(linear.copy(), exponent, domain);
     };
     return d3_scale_linearRebind(scale, linear);
   }
@@ -6613,7 +7744,7 @@ d3 = function() {
   function d3_scale_ordinal(domain, ranger) {
     var index, range, rangeBand;
     function scale(x) {
-      return range[((index.get(x) || index.set(x, domain.push(x))) - 1) % range.length];
+      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
     }
     function steps(start, step) {
       return d3.range(domain.length).map(function(i) {
@@ -6640,8 +7771,9 @@ d3 = function() {
     };
     scale.rangePoints = function(x, padding) {
       if (arguments.length < 2) padding = 0;
-      var start = x[0], stop = x[1], step = (stop - start) / (Math.max(1, domain.length - 1) + padding);
-      range = steps(domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2, step);
+      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2, 
+      0) : (stop - start) / (domain.length - 1 + padding);
+      range = steps(start + step * padding / 2, step);
       rangeBand = 0;
       ranger = {
         t: "rangePoints",
@@ -6649,6 +7781,18 @@ d3 = function() {
       };
       return scale;
     };
+    scale.rangeRoundPoints = function(x, padding) {
+      if (arguments.length < 2) padding = 0;
+      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2), 
+      0) : (stop - start) / (domain.length - 1 + padding) | 0;
+      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
+      rangeBand = 0;
+      ranger = {
+        t: "rangeRoundPoints",
+        a: arguments
+      };
+      return scale;
+    };
     scale.rangeBands = function(x, padding, outerPadding) {
       if (arguments.length < 2) padding = 0;
       if (arguments.length < 3) outerPadding = padding;
@@ -6665,8 +7809,8 @@ d3 = function() {
     scale.rangeRoundBands = function(x, padding, outerPadding) {
       if (arguments.length < 2) padding = 0;
       if (arguments.length < 3) outerPadding = padding;
-      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding)), error = stop - start - (domain.length - padding) * step;
-      range = steps(start + Math.round(error / 2), step);
+      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
+      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
       if (reverse) range.reverse();
       rangeBand = Math.round(step * (1 - padding));
       ranger = {
@@ -6698,10 +7842,10 @@ d3 = function() {
   d3.scale.category20c = function() {
     return d3.scale.ordinal().range(d3_category20c);
   };
-  var d3_category10 = [ "#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd", "#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf" ];
-  var d3_category20 = [ "#1f77b4", "#aec7e8", "#ff7f0e", "#ffbb78", "#2ca02c", "#98df8a", "#d62728", "#ff9896", "#9467bd", "#c5b0d5", "#8c564b", "#c49c94", "#e377c2", "#f7b6d2", "#7f7f7f", "#c7c7c7", "#bcbd22", "#dbdb8d", "#17becf", "#9edae5" ];
-  var d3_category20b = [ "#393b79", "#5254a3", "#6b6ecf", "#9c9ede", "#637939", "#8ca252", "#b5cf6b", "#cedb9c", "#8c6d31", "#bd9e39", "#e7ba52", "#e7cb94", "#843c39", "#ad494a", "#d6616b", "#e7969c", "#7b4173", "#a55194", "#ce6dbd", "#de9ed6" ];
-  var d3_category20c = [ "#3182bd", "#6baed6", "#9ecae1", "#c6dbef", "#e6550d", "#fd8d3c", "#fdae6b", "#fdd0a2", "#31a354", "#74c476", "#a1d99b", "#c7e9c0", "#756bb1", "#9e9ac8", "#bcbddc", "#dadaeb", "#636363", "#969696", "#bdbdbd", "#d9d9d9" ];
+  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
+  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
+  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
+  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
   d3.scale.quantile = function() {
     return d3_scale_quantile([], []);
   };
@@ -6714,14 +7858,11 @@ d3 = function() {
       return scale;
     }
     function scale(x) {
-      if (isNaN(x = +x)) return NaN;
-      return range[d3.bisect(thresholds, x)];
+      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
     }
     scale.domain = function(x) {
       if (!arguments.length) return domain;
-      domain = x.filter(function(d) {
-        return !isNaN(d);
-      }).sort(d3.ascending);
+      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
       return rescale();
     };
     scale.range = function(x) {
@@ -6732,6 +7873,10 @@ d3 = function() {
     scale.quantiles = function() {
       return thresholds;
     };
+    scale.invertExtent = function(y) {
+      y = range.indexOf(y);
+      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
+    };
     scale.copy = function() {
       return d3_scale_quantile(domain, range);
     };
@@ -6761,6 +7906,11 @@ d3 = function() {
       range = x;
       return rescale();
     };
+    scale.invertExtent = function(y) {
+      y = range.indexOf(y);
+      y = y < 0 ? NaN : y / kx + x0;
+      return [ y, y + 1 / kx ];
+    };
     scale.copy = function() {
       return d3_scale_quantize(x0, x1, range);
     };
@@ -6771,7 +7921,7 @@ d3 = function() {
   };
   function d3_scale_threshold(domain, range) {
     function scale(x) {
-      return range[d3.bisect(domain, x)];
+      if (x <= x) return range[d3.bisect(domain, x)];
     }
     scale.domain = function(_) {
       if (!arguments.length) return domain;
@@ -6783,6 +7933,10 @@ d3 = function() {
       range = _;
       return scale;
     };
+    scale.invertExtent = function(y) {
+      y = range.indexOf(y);
+      return [ domain[y - 1], domain[y] ];
+    };
     scale.copy = function() {
       return d3_scale_threshold(domain, range);
     };
@@ -6812,12 +7966,92 @@ d3 = function() {
     };
     return identity;
   }
+  d3.svg = {};
+  function d3_zero() {
+    return 0;
+  }
   d3.svg.arc = function() {
-    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
+    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
     function arc() {
-      var r0 = innerRadius.apply(this, arguments), r1 = outerRadius.apply(this, arguments), a0 = startAngle.apply(this, arguments) + d3_svg_arcOffset, a1 = endAngle.apply(this, arguments) + d3_svg_arcOffset, da = (a1 < a0 && (da = a0, 
-      a0 = a1, a1 = da), a1 - a0), df = da < π ? "0" : "1", c0 = Math.cos(a0), s0 = Math.sin(a0), c1 = Math.cos(a1), s1 = Math.sin(a1);
-      return da >= d3_svg_arcMax ? r0 ? "M0," + r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + -r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1 + "M0," + r0 + "A" + r0 + "," + r0 + " 0 1,0 0," + -r0 + "A" + r0 + "," + r0 + " 0 1,0 0," + r0 + "Z" : "M0," + r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + -r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1 + "Z" : r0 ? "M" + r1 * c0 + "," + r1 * s0 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1 + "L" + r0 * c1 + "," + r0 * s1 + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0 + "Z" : "M" + r1 * c0 + "," + r1 * s0 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1 + "L0,0" + "Z";
+      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
+      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
+      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
+      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
+      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
+        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
+        if (!cw) p1 *= -1;
+        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
+        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
+      }
+      if (r1) {
+        x0 = r1 * Math.cos(a0 + p1);
+        y0 = r1 * Math.sin(a0 + p1);
+        x1 = r1 * Math.cos(a1 - p1);
+        y1 = r1 * Math.sin(a1 - p1);
+        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
+        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
+          var h1 = (a0 + a1) / 2;
+          x0 = r1 * Math.cos(h1);
+          y0 = r1 * Math.sin(h1);
+          x1 = y1 = null;
+        }
+      } else {
+        x0 = y0 = 0;
+      }
+      if (r0) {
+        x2 = r0 * Math.cos(a1 - p0);
+        y2 = r0 * Math.sin(a1 - p0);
+        x3 = r0 * Math.cos(a0 + p0);
+        y3 = r0 * Math.sin(a0 + p0);
+        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
+        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
+          var h0 = (a0 + a1) / 2;
+          x2 = r0 * Math.cos(h0);
+          y2 = r0 * Math.sin(h0);
+          x3 = y3 = null;
+        }
+      } else {
+        x2 = y2 = 0;
+      }
+      if (da > ε && (rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
+        cr = r0 < r1 ^ cw ? 0 : 1;
+        var rc1 = rc, rc0 = rc;
+        if (da < π) {
+          var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
+          rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
+          rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
+        }
+        if (x1 != null) {
+          var t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
+          if (rc === rc1) {
+            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
+          } else {
+            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
+          }
+        } else {
+          path.push("M", x0, ",", y0);
+        }
+        if (x3 != null) {
+          var t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
+          if (rc === rc0) {
+            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
+          } else {
+            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
+          }
+        } else {
+          path.push("L", x2, ",", y2);
+        }
+      } else {
+        path.push("M", x0, ",", y0);
+        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
+        path.push("L", x2, ",", y2);
+        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
+      }
+      path.push("Z");
+      return path.join("");
+    }
+    function circleSegment(r1, cw) {
+      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
     }
     arc.innerRadius = function(v) {
       if (!arguments.length) return innerRadius;
@@ -6829,6 +8063,16 @@ d3 = function() {
       outerRadius = d3_functor(v);
       return arc;
     };
+    arc.cornerRadius = function(v) {
+      if (!arguments.length) return cornerRadius;
+      cornerRadius = d3_functor(v);
+      return arc;
+    };
+    arc.padRadius = function(v) {
+      if (!arguments.length) return padRadius;
+      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
+      return arc;
+    };
     arc.startAngle = function(v) {
       if (!arguments.length) return startAngle;
       startAngle = d3_functor(v);
@@ -6839,13 +8083,18 @@ d3 = function() {
       endAngle = d3_functor(v);
       return arc;
     };
+    arc.padAngle = function(v) {
+      if (!arguments.length) return padAngle;
+      padAngle = d3_functor(v);
+      return arc;
+    };
     arc.centroid = function() {
-      var r = (innerRadius.apply(this, arguments) + outerRadius.apply(this, arguments)) / 2, a = (startAngle.apply(this, arguments) + endAngle.apply(this, arguments)) / 2 + d3_svg_arcOffset;
+      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
       return [ Math.cos(a) * r, Math.sin(a) * r ];
     };
     return arc;
   };
-  var d3_svg_arcOffset = -π / 2, d3_svg_arcMax = 2 * π - 1e-6;
+  var d3_svg_arcAuto = "auto";
   function d3_svg_arcInnerRadius(d) {
     return d.innerRadius;
   }
@@ -6858,6 +8107,266 @@ d3 = function() {
   function d3_svg_arcEndAngle(d) {
     return d.endAngle;
   }
+  function d3_svg_arcPadAngle(d) {
+    return d && d.padAngle;
+  }
+  function d3_svg_arcSweep(x0, y0, x1, y1) {
+    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
+  }
+  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
+    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
+    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
+    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
+  }
+  function d3_svg_line(projection) {
+    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
+    function line(data) {
+      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
+      function segment() {
+        segments.push("M", interpolate(projection(points), tension));
+      }
+      while (++i < n) {
+        if (defined.call(this, d = data[i], i)) {
+          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
+        } else if (points.length) {
+          segment();
+          points = [];
+        }
+      }
+      if (points.length) segment();
+      return segments.length ? segments.join("") : null;
+    }
+    line.x = function(_) {
+      if (!arguments.length) return x;
+      x = _;
+      return line;
+    };
+    line.y = function(_) {
+      if (!arguments.length) return y;
+      y = _;
+      return line;
+    };
+    line.defined = function(_) {
+      if (!arguments.length) return defined;
+      defined = _;
+      return line;
+    };
+    line.interpolate = function(_) {
+      if (!arguments.length) return interpolateKey;
+      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
+      return line;
+    };
+    line.tension = function(_) {
+      if (!arguments.length) return tension;
+      tension = _;
+      return line;
+    };
+    return line;
+  }
+  d3.svg.line = function() {
+    return d3_svg_line(d3_identity);
+  };
+  var d3_svg_lineInterpolators = d3.map({
+    linear: d3_svg_lineLinear,
+    "linear-closed": d3_svg_lineLinearClosed,
+    step: d3_svg_lineStep,
+    "step-before": d3_svg_lineStepBefore,
+    "step-after": d3_svg_lineStepAfter,
+    basis: d3_svg_lineBasis,
+    "basis-open": d3_svg_lineBasisOpen,
+    "basis-closed": d3_svg_lineBasisClosed,
+    bundle: d3_svg_lineBundle,
+    cardinal: d3_svg_lineCardinal,
+    "cardinal-open": d3_svg_lineCardinalOpen,
+    "cardinal-closed": d3_svg_lineCardinalClosed,
+    monotone: d3_svg_lineMonotone
+  });
+  d3_svg_lineInterpolators.forEach(function(key, value) {
+    value.key = key;
+    value.closed = /-closed$/.test(key);
+  });
+  function d3_svg_lineLinear(points) {
+    return points.length > 1 ? points.join("L") : points + "Z";
+  }
+  function d3_svg_lineLinearClosed(points) {
+    return points.join("L") + "Z";
+  }
+  function d3_svg_lineStep(points) {
+    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
+    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
+    if (n > 1) path.push("H", p[0]);
+    return path.join("");
+  }
+  function d3_svg_lineStepBefore(points) {
+    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
+    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
+    return path.join("");
+  }
+  function d3_svg_lineStepAfter(points) {
+    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
+    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
+    return path.join("");
+  }
+  function d3_svg_lineCardinalOpen(points, tension) {
+    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
+  }
+  function d3_svg_lineCardinalClosed(points, tension) {
+    return points.length < 3 ? d3_svg_lineLinearClosed(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
+    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
+  }
+  function d3_svg_lineCardinal(points, tension) {
+    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
+  }
+  function d3_svg_lineHermite(points, tangents) {
+    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
+      return d3_svg_lineLinear(points);
+    }
+    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
+    if (quad) {
+      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
+      p0 = points[1];
+      pi = 2;
+    }
+    if (tangents.length > 1) {
+      t = tangents[1];
+      p = points[pi];
+      pi++;
+      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
+      for (var i = 2; i < tangents.length; i++, pi++) {
+        p = points[pi];
+        t = tangents[i];
+        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
+      }
+    }
+    if (quad) {
+      var lp = points[pi];
+      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
+    }
+    return path;
+  }
+  function d3_svg_lineCardinalTangents(points, tension) {
+    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
+    while (++i < n) {
+      p0 = p1;
+      p1 = p2;
+      p2 = points[i];
+      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
+    }
+    return tangents;
+  }
+  function d3_svg_lineBasis(points) {
+    if (points.length < 3) return d3_svg_lineLinear(points);
+    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
+    points.push(points[n - 1]);
+    while (++i <= n) {
+      pi = points[i];
+      px.shift();
+      px.push(pi[0]);
+      py.shift();
+      py.push(pi[1]);
+      d3_svg_lineBasisBezier(path, px, py);
+    }
+    points.pop();
+    path.push("L", pi);
+    return path.join("");
+  }
+  function d3_svg_lineBasisOpen(points) {
+    if (points.length < 4) return d3_svg_lineLinear(points);
+    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
+    while (++i < 3) {
+      pi = points[i];
+      px.push(pi[0]);
+      py.push(pi[1]);
+    }
+    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
+    --i;
+    while (++i < n) {
+      pi = points[i];
+      px.shift();
+      px.push(pi[0]);
+      py.shift();
+      py.push(pi[1]);
+      d3_svg_lineBasisBezier(path, px, py);
+    }
+    return path.join("");
+  }
+  function d3_svg_lineBasisClosed(points) {
+    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
+    while (++i < 4) {
+      pi = points[i % n];
+      px.push(pi[0]);
+      py.push(pi[1]);
+    }
+    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
+    --i;
+    while (++i < m) {
+      pi = points[i % n];
+      px.shift();
+      px.push(pi[0]);
+      py.shift();
+      py.push(pi[1]);
+      d3_svg_lineBasisBezier(path, px, py);
+    }
+    return path.join("");
+  }
+  function d3_svg_lineBundle(points, tension) {
+    var n = points.length - 1;
+    if (n) {
+      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
+      while (++i <= n) {
+        p = points[i];
+        t = i / n;
+        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
+        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
+      }
+    }
+    return d3_svg_lineBasis(points);
+  }
+  function d3_svg_lineDot4(a, b) {
+    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+  }
+  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
+  function d3_svg_lineBasisBezier(path, x, y) {
+    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
+  }
+  function d3_svg_lineSlope(p0, p1) {
+    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
+  }
+  function d3_svg_lineFiniteDifferences(points) {
+    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
+    while (++i < j) {
+      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
+    }
+    m[i] = d;
+    return m;
+  }
+  function d3_svg_lineMonotoneTangents(points) {
+    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
+    while (++i < j) {
+      d = d3_svg_lineSlope(points[i], points[i + 1]);
+      if (abs(d) < ε) {
+        m[i] = m[i + 1] = 0;
+      } else {
+        a = m[i] / d;
+        b = m[i + 1] / d;
+        s = a * a + b * b;
+        if (s > 9) {
+          s = d * 3 / Math.sqrt(s);
+          m[i] = s * a;
+          m[i + 1] = s * b;
+        }
+      }
+    }
+    i = -1;
+    while (++i <= j) {
+      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
+      tangents.push([ s || 0, m[i] * s || 0 ]);
+    }
+    return tangents;
+  }
+  function d3_svg_lineMonotone(points) {
+    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
+  }
   d3.svg.line.radial = function() {
     var line = d3_svg_line(d3_svg_lineRadial);
     line.radius = line.x, delete line.x;
@@ -6869,14 +8378,14 @@ d3 = function() {
     while (++i < n) {
       point = points[i];
       r = point[0];
-      a = point[1] + d3_svg_arcOffset;
+      a = point[1] - halfπ;
       point[0] = r * Math.cos(a);
       point[1] = r * Math.sin(a);
     }
     return points;
   }
   function d3_svg_area(projection) {
-    var x0 = d3_svg_lineX, x1 = d3_svg_lineX, y0 = 0, y1 = d3_svg_lineY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
+    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
     function area(data) {
       var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
         return x;
@@ -6970,7 +8479,7 @@ d3 = function() {
       return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
     }
     function subgroup(self, f, d, i) {
-      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) + d3_svg_arcOffset, a1 = endAngle.call(self, subgroup, i) + d3_svg_arcOffset;
+      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
       return {
         r: r,
         a0: a0,
@@ -7060,7 +8569,7 @@ d3 = function() {
   };
   function d3_svg_diagonalRadialProjection(projection) {
     return function() {
-      var d = projection.apply(this, arguments), r = d[0], a = d[1] + d3_svg_arcOffset;
+      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
       return [ r * Math.cos(a), r * Math.sin(a) ];
     };
   }
@@ -7116,57 +8625,87 @@ d3 = function() {
   });
   d3.svg.symbolTypes = d3_svg_symbols.keys();
   var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
-  function d3_transition(groups, id) {
-    d3_arraySubclass(groups, d3_transitionPrototype);
+  d3_selectionPrototype.transition = function(name) {
+    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
+      time: Date.now(),
+      ease: d3_ease_cubicInOut,
+      delay: 0,
+      duration: 250
+    };
+    for (var j = -1, m = this.length; ++j < m; ) {
+      subgroups.push(subgroup = []);
+      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
+        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
+        subgroup.push(node);
+      }
+    }
+    return d3_transition(subgroups, ns, id);
+  };
+  d3_selectionPrototype.interrupt = function(name) {
+    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
+  };
+  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
+  function d3_selection_interruptNS(ns) {
+    return function() {
+      var lock, activeId, active;
+      if ((lock = this[ns]) && (active = lock[activeId = lock.active])) {
+        active.timer.c = null;
+        active.timer.t = NaN;
+        if (--lock.count) delete lock[activeId]; else delete this[ns];
+        lock.active += .5;
+        active.event && active.event.interrupt.call(this, this.__data__, active.index);
+      }
+    };
+  }
+  function d3_transition(groups, ns, id) {
+    d3_subclass(groups, d3_transitionPrototype);
+    groups.namespace = ns;
     groups.id = id;
     return groups;
   }
-  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit = {
-    ease: d3_ease_cubicInOut,
-    delay: 0,
-    duration: 250
-  };
+  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
   d3_transitionPrototype.call = d3_selectionPrototype.call;
   d3_transitionPrototype.empty = d3_selectionPrototype.empty;
   d3_transitionPrototype.node = d3_selectionPrototype.node;
-  d3.transition = function(selection) {
-    return arguments.length ? d3_transitionInheritId ? selection.transition() : selection : d3_selectionRoot.transition();
+  d3_transitionPrototype.size = d3_selectionPrototype.size;
+  d3.transition = function(selection, name) {
+    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
   };
   d3.transition.prototype = d3_transitionPrototype;
   d3_transitionPrototype.select = function(selector) {
-    var id = this.id, subgroups = [], subgroup, subnode, node;
-    if (typeof selector !== "function") selector = d3_selection_selector(selector);
+    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
+    selector = d3_selection_selector(selector);
     for (var j = -1, m = this.length; ++j < m; ) {
       subgroups.push(subgroup = []);
       for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
-        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i))) {
+        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
           if ("__data__" in node) subnode.__data__ = node.__data__;
-          d3_transitionNode(subnode, i, id, node.__transition__[id]);
+          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
           subgroup.push(subnode);
         } else {
           subgroup.push(null);
         }
       }
     }
-    return d3_transition(subgroups, id);
+    return d3_transition(subgroups, ns, id);
   };
   d3_transitionPrototype.selectAll = function(selector) {
-    var id = this.id, subgroups = [], subgroup, subnodes, node, subnode, transition;
-    if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
+    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
+    selector = d3_selection_selectorAll(selector);
     for (var j = -1, m = this.length; ++j < m; ) {
       for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
         if (node = group[i]) {
-          transition = node.__transition__[id];
-          subnodes = selector.call(node, node.__data__, i);
+          transition = node[ns][id];
+          subnodes = selector.call(node, node.__data__, i, j);
           subgroups.push(subgroup = []);
           for (var k = -1, o = subnodes.length; ++k < o; ) {
-            d3_transitionNode(subnode = subnodes[k], k, id, transition);
+            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
             subgroup.push(subnode);
           }
         }
       }
     }
-    return d3_transition(subgroups, id);
+    return d3_transition(subgroups, ns, id);
   };
   d3_transitionPrototype.filter = function(filter) {
     var subgroups = [], subgroup, group, node;
@@ -7174,28 +8713,28 @@ d3 = function() {
     for (var j = 0, m = this.length; j < m; j++) {
       subgroups.push(subgroup = []);
       for (var group = this[j], i = 0, n = group.length; i < n; i++) {
-        if ((node = group[i]) && filter.call(node, node.__data__, i)) {
+        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
           subgroup.push(node);
         }
       }
     }
-    return d3_transition(subgroups, this.id, this.time).ease(this.ease());
+    return d3_transition(subgroups, this.namespace, this.id);
   };
   d3_transitionPrototype.tween = function(name, tween) {
-    var id = this.id;
-    if (arguments.length < 2) return this.node().__transition__[id].tween.get(name);
+    var id = this.id, ns = this.namespace;
+    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
     return d3_selection_each(this, tween == null ? function(node) {
-      node.__transition__[id].tween.remove(name);
+      node[ns][id].tween.remove(name);
     } : function(node) {
-      node.__transition__[id].tween.set(name, tween);
+      node[ns][id].tween.set(name, tween);
     });
   };
   function d3_transition_tween(groups, name, value, tween) {
-    var id = groups.id;
+    var id = groups.id, ns = groups.namespace;
     return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
-      node.__transition__[id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
+      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
     } : (value = tween(value), function(node) {
-      node.__transition__[id].tween.set(name, value);
+      node[ns][id].tween.set(name, value);
     }));
   }
   d3_transitionPrototype.attr = function(nameNS, value) {
@@ -7203,7 +8742,7 @@ d3 = function() {
       for (value in nameNS) this.attr(value, nameNS[value]);
       return this;
     }
-    var interpolate = d3_interpolateByName(nameNS), name = d3.ns.qualify(nameNS);
+    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
     function attrNull() {
       this.removeAttribute(name);
     }
@@ -7254,14 +8793,13 @@ d3 = function() {
       }
       priority = "";
     }
-    var interpolate = d3_interpolateByName(name);
     function styleNull() {
       this.style.removeProperty(name);
     }
     function styleString(b) {
       return b == null ? styleNull : (b += "", function() {
-        var a = d3_window.getComputedStyle(this, null).getPropertyValue(name), i;
-        return a !== b && (i = interpolate(a, b), function(t) {
+        var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
+        return a !== b && (i = d3_interpolate(a, b), function(t) {
           this.style.setProperty(name, i(t), priority);
         });
       });
@@ -7271,7 +8809,7 @@ d3 = function() {
   d3_transitionPrototype.styleTween = function(name, tween, priority) {
     if (arguments.length < 3) priority = "";
     function styleTween(d, i) {
-      var f = tween.call(this, d, i, d3_window.getComputedStyle(this, null).getPropertyValue(name));
+      var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
       return f && function(t) {
         this.style.setProperty(name, f(t), priority);
       };
@@ -7288,205 +8826,194 @@ d3 = function() {
     };
   }
   d3_transitionPrototype.remove = function() {
+    var ns = this.namespace;
     return this.each("end.transition", function() {
       var p;
-      if (!this.__transition__ && (p = this.parentNode)) p.removeChild(this);
+      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
     });
   };
   d3_transitionPrototype.ease = function(value) {
-    var id = this.id;
-    if (arguments.length < 1) return this.node().__transition__[id].ease;
+    var id = this.id, ns = this.namespace;
+    if (arguments.length < 1) return this.node()[ns][id].ease;
     if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
     return d3_selection_each(this, function(node) {
-      node.__transition__[id].ease = value;
+      node[ns][id].ease = value;
     });
   };
   d3_transitionPrototype.delay = function(value) {
-    var id = this.id;
+    var id = this.id, ns = this.namespace;
+    if (arguments.length < 1) return this.node()[ns][id].delay;
     return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
-      node.__transition__[id].delay = value.call(node, node.__data__, i, j) | 0;
-    } : (value |= 0, function(node) {
-      node.__transition__[id].delay = value;
+      node[ns][id].delay = +value.call(node, node.__data__, i, j);
+    } : (value = +value, function(node) {
+      node[ns][id].delay = value;
     }));
   };
   d3_transitionPrototype.duration = function(value) {
-    var id = this.id;
+    var id = this.id, ns = this.namespace;
+    if (arguments.length < 1) return this.node()[ns][id].duration;
     return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
-      node.__transition__[id].duration = Math.max(1, value.call(node, node.__data__, i, j) | 0);
-    } : (value = Math.max(1, value | 0), function(node) {
-      node.__transition__[id].duration = value;
+      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
+    } : (value = Math.max(1, value), function(node) {
+      node[ns][id].duration = value;
     }));
   };
   d3_transitionPrototype.each = function(type, listener) {
-    var id = this.id;
+    var id = this.id, ns = this.namespace;
     if (arguments.length < 2) {
       var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
-      d3_transitionInheritId = id;
-      d3_selection_each(this, function(node, i, j) {
-        d3_transitionInherit = node.__transition__[id];
-        type.call(node, node.__data__, i, j);
-      });
-      d3_transitionInherit = inherit;
-      d3_transitionInheritId = inheritId;
+      try {
+        d3_transitionInheritId = id;
+        d3_selection_each(this, function(node, i, j) {
+          d3_transitionInherit = node[ns][id];
+          type.call(node, node.__data__, i, j);
+        });
+      } finally {
+        d3_transitionInherit = inherit;
+        d3_transitionInheritId = inheritId;
+      }
     } else {
       d3_selection_each(this, function(node) {
-        node.__transition__[id].event.on(type, listener);
+        var transition = node[ns][id];
+        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
       });
     }
     return this;
   };
   d3_transitionPrototype.transition = function() {
-    var id0 = this.id, id1 = ++d3_transitionId, subgroups = [], subgroup, group, node, transition;
+    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
     for (var j = 0, m = this.length; j < m; j++) {
       subgroups.push(subgroup = []);
       for (var group = this[j], i = 0, n = group.length; i < n; i++) {
         if (node = group[i]) {
-          transition = Object.create(node.__transition__[id0]);
-          transition.delay += transition.duration;
-          d3_transitionNode(node, i, id1, transition);
+          transition = node[ns][id0];
+          d3_transitionNode(node, i, ns, id1, {
+            time: transition.time,
+            ease: transition.ease,
+            delay: transition.delay + transition.duration,
+            duration: transition.duration
+          });
         }
         subgroup.push(node);
       }
     }
-    return d3_transition(subgroups, id1);
+    return d3_transition(subgroups, ns, id1);
   };
-  function d3_transitionNode(node, i, id, inherit) {
-    var lock = node.__transition__ || (node.__transition__ = {
+  function d3_transitionNamespace(name) {
+    return name == null ? "__transition__" : "__transition_" + name + "__";
+  }
+  function d3_transitionNode(node, i, ns, id, inherit) {
+    var lock = node[ns] || (node[ns] = {
       active: 0,
       count: 0
-    }), transition = lock[id];
+    }), transition = lock[id], time, timer, duration, ease, tweens;
+    function schedule(elapsed) {
+      var delay = transition.delay;
+      timer.t = delay + time;
+      if (delay <= elapsed) return start(elapsed - delay);
+      timer.c = start;
+    }
+    function start(elapsed) {
+      var activeId = lock.active, active = lock[activeId];
+      if (active) {
+        active.timer.c = null;
+        active.timer.t = NaN;
+        --lock.count;
+        delete lock[activeId];
+        active.event && active.event.interrupt.call(node, node.__data__, active.index);
+      }
+      for (var cancelId in lock) {
+        if (+cancelId < id) {
+          var cancel = lock[cancelId];
+          cancel.timer.c = null;
+          cancel.timer.t = NaN;
+          --lock.count;
+          delete lock[cancelId];
+        }
+      }
+      timer.c = tick;
+      d3_timer(function() {
+        if (timer.c && tick(elapsed || 1)) {
+          timer.c = null;
+          timer.t = NaN;
+        }
+        return 1;
+      }, 0, time);
+      lock.active = id;
+      transition.event && transition.event.start.call(node, node.__data__, i);
+      tweens = [];
+      transition.tween.forEach(function(key, value) {
+        if (value = value.call(node, node.__data__, i)) {
+          tweens.push(value);
+        }
+      });
+      ease = transition.ease;
+      duration = transition.duration;
+    }
+    function tick(elapsed) {
+      var t = elapsed / duration, e = ease(t), n = tweens.length;
+      while (n > 0) {
+        tweens[--n].call(node, e);
+      }
+      if (t >= 1) {
+        transition.event && transition.event.end.call(node, node.__data__, i);
+        if (--lock.count) delete lock[id]; else delete node[ns];
+        return 1;
+      }
+    }
     if (!transition) {
-      var time = inherit.time;
+      time = inherit.time;
+      timer = d3_timer(schedule, 0, time);
       transition = lock[id] = {
         tween: new d3_Map(),
-        event: d3.dispatch("start", "end"),
         time: time,
-        ease: inherit.ease,
+        timer: timer,
         delay: inherit.delay,
-        duration: inherit.duration
+        duration: inherit.duration,
+        ease: inherit.ease,
+        index: i
       };
+      inherit = null;
       ++lock.count;
-      d3.timer(function(elapsed) {
-        var d = node.__data__, ease = transition.ease, event = transition.event, delay = transition.delay, duration = transition.duration, tweened = [];
-        return delay <= elapsed ? start(elapsed) : d3.timer(start, delay, time), 1;
-        function start(elapsed) {
-          if (lock.active > id) return stop();
-          lock.active = id;
-          event.start.call(node, d, i);
-          transition.tween.forEach(function(key, value) {
-            if (value = value.call(node, d, i)) {
-              tweened.push(value);
-            }
-          });
-          if (!tick(elapsed)) d3.timer(tick, 0, time);
-          return 1;
-        }
-        function tick(elapsed) {
-          if (lock.active !== id) return stop();
-          var t = (elapsed - delay) / duration, e = ease(t), n = tweened.length;
-          while (n > 0) {
-            tweened[--n].call(node, e);
-          }
-          if (t >= 1) {
-            stop();
-            event.end.call(node, d, i);
-            return 1;
-          }
-        }
-        function stop() {
-          if (--lock.count) delete lock[id]; else delete node.__transition__;
-          return 1;
-        }
-      }, 0, time);
-      return transition;
     }
   }
   d3.svg.axis = function() {
-    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, tickMajorSize = 6, tickMinorSize = 6, tickEndSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_, tickSubdivide = 0;
+    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
     function axis(g) {
       g.each(function() {
         var g = d3.select(this);
-        var ticks = tickValues == null ? scale.ticks ? scale.ticks.apply(scale, tickArguments_) : scale.domain() : tickValues, tickFormat = tickFormat_ == null ? scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments_) : String : tickFormat_;
-        var subticks = d3_svg_axisSubdivide(scale, ticks, tickSubdivide), subtick = g.selectAll(".tick.minor").data(subticks, String), subtickEnter = subtick.enter().insert("line", ".tick").attr("class", "tick minor").style("opacity", 1e-6), subtickExit = d3.transition(subtick.exit()).style("opacity", 1e-6).remove(), subtickUpdate = d3.transition(subtick).style("opacity", 1);
-        var tick = g.selectAll(".tick.major").data(ticks, String), tickEnter = tick.enter().insert("g", "path").attr("class", "tick major").style("opacity", 1e-6), tickExit = d3.transition(tick.exit()).style("opacity", 1e-6).remove(), tickUpdate = d3.transition(tick).style("opacity", 1), tickTransform;
-        var range = d3_scaleRange(scale), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
+        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
+        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
+        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
         d3.transition(path));
-        var scale1 = scale.copy(), scale0 = this.__chart__ || scale1;
-        this.__chart__ = scale1;
         tickEnter.append("line");
         tickEnter.append("text");
-        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text");
-        switch (orient) {
-         case "bottom":
-          {
-            tickTransform = d3_svg_axisX;
-            subtickEnter.attr("y2", tickMinorSize);
-            subtickUpdate.attr("x2", 0).attr("y2", tickMinorSize);
-            lineEnter.attr("y2", tickMajorSize);
-            textEnter.attr("y", Math.max(tickMajorSize, 0) + tickPadding);
-            lineUpdate.attr("x2", 0).attr("y2", tickMajorSize);
-            textUpdate.attr("x", 0).attr("y", Math.max(tickMajorSize, 0) + tickPadding);
-            text.attr("dy", ".71em").style("text-anchor", "middle");
-            pathUpdate.attr("d", "M" + range[0] + "," + tickEndSize + "V0H" + range[1] + "V" + tickEndSize);
-            break;
-          }
-
-         case "top":
-          {
-            tickTransform = d3_svg_axisX;
-            subtickEnter.attr("y2", -tickMinorSize);
-            subtickUpdate.attr("x2", 0).attr("y2", -tickMinorSize);
-            lineEnter.attr("y2", -tickMajorSize);
-            textEnter.attr("y", -(Math.max(tickMajorSize, 0) + tickPadding));
-            lineUpdate.attr("x2", 0).attr("y2", -tickMajorSize);
-            textUpdate.attr("x", 0).attr("y", -(Math.max(tickMajorSize, 0) + tickPadding));
-            text.attr("dy", "0em").style("text-anchor", "middle");
-            pathUpdate.attr("d", "M" + range[0] + "," + -tickEndSize + "V0H" + range[1] + "V" + -tickEndSize);
-            break;
-          }
-
-         case "left":
-          {
-            tickTransform = d3_svg_axisY;
-            subtickEnter.attr("x2", -tickMinorSize);
-            subtickUpdate.attr("x2", -tickMinorSize).attr("y2", 0);
-            lineEnter.attr("x2", -tickMajorSize);
-            textEnter.attr("x", -(Math.max(tickMajorSize, 0) + tickPadding));
-            lineUpdate.attr("x2", -tickMajorSize).attr("y2", 0);
-            textUpdate.attr("x", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("y", 0);
-            text.attr("dy", ".32em").style("text-anchor", "end");
-            pathUpdate.attr("d", "M" + -tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + -tickEndSize);
-            break;
-          }
-
-         case "right":
-          {
-            tickTransform = d3_svg_axisY;
-            subtickEnter.attr("x2", tickMinorSize);
-            subtickUpdate.attr("x2", tickMinorSize).attr("y2", 0);
-            lineEnter.attr("x2", tickMajorSize);
-            textEnter.attr("x", Math.max(tickMajorSize, 0) + tickPadding);
-            lineUpdate.attr("x2", tickMajorSize).attr("y2", 0);
-            textUpdate.attr("x", Math.max(tickMajorSize, 0) + tickPadding).attr("y", 0);
-            text.attr("dy", ".32em").style("text-anchor", "start");
-            pathUpdate.attr("d", "M" + tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + tickEndSize);
-            break;
-          }
-        }
-        if (scale.ticks) {
-          tickEnter.call(tickTransform, scale0);
-          tickUpdate.call(tickTransform, scale1);
-          tickExit.call(tickTransform, scale1);
-          subtickEnter.call(tickTransform, scale0);
-          subtickUpdate.call(tickTransform, scale1);
-          subtickExit.call(tickTransform, scale1);
+        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
+        if (orient === "bottom" || orient === "top") {
+          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
+          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
+          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
         } else {
-          var dx = scale1.rangeBand() / 2, x = function(d) {
-            return scale1(d) + dx;
+          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
+          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
+          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
+        }
+        lineEnter.attr(y2, sign * innerTickSize);
+        textEnter.attr(y1, sign * tickSpacing);
+        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
+        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
+        if (scale1.rangeBand) {
+          var x = scale1, dx = x.rangeBand() / 2;
+          scale0 = scale1 = function(d) {
+            return x(d) + dx;
           };
-          tickEnter.call(tickTransform, x);
-          tickUpdate.call(tickTransform, x);
+        } else if (scale0.rangeBand) {
+          scale0 = scale1;
+        } else {
+          tickExit.call(tickTransform, scale1, scale0);
         }
+        tickEnter.call(tickTransform, scale0, scale1);
+        tickUpdate.call(tickTransform, scale1, scale1);
       });
     }
     axis.scale = function(x) {
@@ -7501,7 +9028,7 @@ d3 = function() {
     };
     axis.ticks = function() {
       if (!arguments.length) return tickArguments_;
-      tickArguments_ = arguments;
+      tickArguments_ = d3_array(arguments);
       return axis;
     };
     axis.tickValues = function(x) {
@@ -7514,12 +9041,21 @@ d3 = function() {
       tickFormat_ = x;
       return axis;
     };
-    axis.tickSize = function(x, y) {
-      if (!arguments.length) return tickMajorSize;
-      var n = arguments.length - 1;
-      tickMajorSize = +x;
-      tickMinorSize = n > 1 ? +y : tickMajorSize;
-      tickEndSize = n > 0 ? +arguments[n] : tickMajorSize;
+    axis.tickSize = function(x) {
+      var n = arguments.length;
+      if (!n) return innerTickSize;
+      innerTickSize = +x;
+      outerTickSize = +arguments[n - 1];
+      return axis;
+    };
+    axis.innerTickSize = function(x) {
+      if (!arguments.length) return innerTickSize;
+      innerTickSize = +x;
+      return axis;
+    };
+    axis.outerTickSize = function(x) {
+      if (!arguments.length) return outerTickSize;
+      outerTickSize = +x;
       return axis;
     };
     axis.tickPadding = function(x) {
@@ -7527,10 +9063,8 @@ d3 = function() {
       tickPadding = +x;
       return axis;
     };
-    axis.tickSubdivide = function(x) {
-      if (!arguments.length) return tickSubdivide;
-      tickSubdivide = +x;
-      return axis;
+    axis.tickSubdivide = function() {
+      return arguments.length && axis;
     };
     return axis;
   };
@@ -7540,42 +9074,29 @@ d3 = function() {
     bottom: 1,
     left: 1
   };
-  function d3_svg_axisX(selection, x) {
+  function d3_svg_axisX(selection, x0, x1) {
     selection.attr("transform", function(d) {
-      return "translate(" + x(d) + ",0)";
+      var v0 = x0(d);
+      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
     });
   }
-  function d3_svg_axisY(selection, y) {
+  function d3_svg_axisY(selection, y0, y1) {
     selection.attr("transform", function(d) {
-      return "translate(0," + y(d) + ")";
+      var v0 = y0(d);
+      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
     });
   }
-  function d3_svg_axisSubdivide(scale, ticks, m) {
-    subticks = [];
-    if (m && ticks.length > 1) {
-      var extent = d3_scaleExtent(scale.domain()), subticks, i = -1, n = ticks.length, d = (ticks[1] - ticks[0]) / ++m, j, v;
-      while (++i < n) {
-        for (j = m; --j > 0; ) {
-          if ((v = +ticks[i] - j * d) >= extent[0]) {
-            subticks.push(v);
-          }
-        }
-      }
-      for (--i, j = 0; ++j < m && (v = +ticks[i] + j * d) < extent[1]; ) {
-        subticks.push(v);
-      }
-    }
-    return subticks;
-  }
   d3.svg.brush = function() {
-    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, resizes = d3_svg_brushResizes[0], extent = [ [ 0, 0 ], [ 0, 0 ] ], extentDomain;
+    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
     function brush(g) {
       g.each(function() {
-        var g = d3.select(this), bg = g.selectAll(".background").data([ 0 ]), fg = g.selectAll(".extent").data([ 0 ]), tz = g.selectAll(".resize").data(resizes, String), e;
-        g.style("pointer-events", "all").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
-        bg.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
-        fg.enter().append("rect").attr("class", "extent").style("cursor", "move");
-        tz.enter().append("g").attr("class", function(d) {
+        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
+        var background = g.selectAll(".background").data([ 0 ]);
+        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
+        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
+        var resize = g.selectAll(".resize").data(resizes, d3_identity);
+        resize.exit().remove();
+        resize.enter().append("g").attr("class", function(d) {
           return "resize " + d;
         }).style("cursor", function(d) {
           return d3_svg_brushCursor[d];
@@ -7584,45 +9105,105 @@ d3 = function() {
         }).attr("y", function(d) {
           return /^[ns]/.test(d) ? -3 : null;
         }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
-        tz.style("display", brush.empty() ? "none" : null);
-        tz.exit().remove();
+        resize.style("display", brush.empty() ? "none" : null);
+        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
         if (x) {
-          e = d3_scaleRange(x);
-          bg.attr("x", e[0]).attr("width", e[1] - e[0]);
-          redrawX(g);
+          range = d3_scaleRange(x);
+          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
+          redrawX(gUpdate);
         }
         if (y) {
-          e = d3_scaleRange(y);
-          bg.attr("y", e[0]).attr("height", e[1] - e[0]);
-          redrawY(g);
+          range = d3_scaleRange(y);
+          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
+          redrawY(gUpdate);
         }
-        redraw(g);
+        redraw(gUpdate);
       });
     }
+    brush.event = function(g) {
+      g.each(function() {
+        var event_ = event.of(this, arguments), extent1 = {
+          x: xExtent,
+          y: yExtent,
+          i: xExtentDomain,
+          j: yExtentDomain
+        }, extent0 = this.__chart__ || extent1;
+        this.__chart__ = extent1;
+        if (d3_transitionInheritId) {
+          d3.select(this).transition().each("start.brush", function() {
+            xExtentDomain = extent0.i;
+            yExtentDomain = extent0.j;
+            xExtent = extent0.x;
+            yExtent = extent0.y;
+            event_({
+              type: "brushstart"
+            });
+          }).tween("brush:brush", function() {
+            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
+            xExtentDomain = yExtentDomain = null;
+            return function(t) {
+              xExtent = extent1.x = xi(t);
+              yExtent = extent1.y = yi(t);
+              event_({
+                type: "brush",
+                mode: "resize"
+              });
+            };
+          }).each("end.brush", function() {
+            xExtentDomain = extent1.i;
+            yExtentDomain = extent1.j;
+            event_({
+              type: "brush",
+              mode: "resize"
+            });
+            event_({
+              type: "brushend"
+            });
+          });
+        } else {
+          event_({
+            type: "brushstart"
+          });
+          event_({
+            type: "brush",
+            mode: "resize"
+          });
+          event_({
+            type: "brushend"
+          });
+        }
+      });
+    };
     function redraw(g) {
       g.selectAll(".resize").attr("transform", function(d) {
-        return "translate(" + extent[+/e$/.test(d)][0] + "," + extent[+/^s/.test(d)][1] + ")";
+        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
       });
     }
     function redrawX(g) {
-      g.select(".extent").attr("x", extent[0][0]);
-      g.selectAll(".extent,.n>rect,.s>rect").attr("width", extent[1][0] - extent[0][0]);
+      g.select(".extent").attr("x", xExtent[0]);
+      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
     }
     function redrawY(g) {
-      g.select(".extent").attr("y", extent[0][1]);
-      g.selectAll(".extent,.e>rect,.w>rect").attr("height", extent[1][1] - extent[0][1]);
+      g.select(".extent").attr("y", yExtent[0]);
+      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
     }
     function brushstart() {
-      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), center, origin = mouse(), offset;
-      var w = d3.select(d3_window).on("mousemove.brush", brushmove).on("mouseup.brush", brushend).on("touchmove.brush", brushmove).on("touchend.brush", brushend).on("keydown.brush", keydown).on("keyup.brush", keyup);
+      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
+      var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
+      if (d3.event.changedTouches) {
+        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
+      } else {
+        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
+      }
+      g.interrupt().selectAll("*").interrupt();
       if (dragging) {
-        origin[0] = extent[0][0] - origin[0];
-        origin[1] = extent[0][1] - origin[1];
+        origin[0] = xExtent[0] - origin[0];
+        origin[1] = yExtent[0] - origin[1];
       } else if (resizing) {
         var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
-        offset = [ extent[1 - ex][0] - origin[0], extent[1 - ey][1] - origin[1] ];
-        origin[0] = extent[ex][0];
-        origin[1] = extent[ey][1];
+        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
+        origin[0] = xExtent[ex];
+        origin[1] = yExtent[ey];
       } else if (d3.event.altKey) center = origin.slice();
       g.style("pointer-events", "none").selectAll(".resize").style("display", null);
       d3.select("body").style("cursor", eventTarget.style("cursor"));
@@ -7630,41 +9211,36 @@ d3 = function() {
         type: "brushstart"
       });
       brushmove();
-      d3_eventCancel();
-      function mouse() {
-        var touches = d3.event.changedTouches;
-        return touches ? d3.touches(target, touches)[0] : d3.mouse(target);
-      }
       function keydown() {
         if (d3.event.keyCode == 32) {
           if (!dragging) {
             center = null;
-            origin[0] -= extent[1][0];
-            origin[1] -= extent[1][1];
+            origin[0] -= xExtent[1];
+            origin[1] -= yExtent[1];
             dragging = 2;
           }
-          d3_eventCancel();
+          d3_eventPreventDefault();
         }
       }
       function keyup() {
         if (d3.event.keyCode == 32 && dragging == 2) {
-          origin[0] += extent[1][0];
-          origin[1] += extent[1][1];
+          origin[0] += xExtent[1];
+          origin[1] += yExtent[1];
           dragging = 0;
-          d3_eventCancel();
+          d3_eventPreventDefault();
         }
       }
       function brushmove() {
-        var point = mouse(), moved = false;
+        var point = d3.mouse(target), moved = false;
         if (offset) {
           point[0] += offset[0];
           point[1] += offset[1];
         }
         if (!dragging) {
           if (d3.event.altKey) {
-            if (!center) center = [ (extent[0][0] + extent[1][0]) / 2, (extent[0][1] + extent[1][1]) / 2 ];
-            origin[0] = extent[+(point[0] < center[0])][0];
-            origin[1] = extent[+(point[1] < center[1])][1];
+            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
+            origin[0] = xExtent[+(point[0] < center[0])];
+            origin[1] = yExtent[+(point[1] < center[1])];
           } else center = null;
         }
         if (resizingX && move1(point, x, 0)) {
@@ -7684,12 +9260,12 @@ d3 = function() {
         }
       }
       function move1(point, scale, i) {
-        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], size = extent[1][i] - extent[0][i], min, max;
+        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
         if (dragging) {
           r0 -= position;
           r1 -= size + position;
         }
-        min = Math.max(r0, Math.min(r1, point[i]));
+        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
         if (dragging) {
           max = (min += position) + size;
         } else {
@@ -7701,10 +9277,10 @@ d3 = function() {
             max = position;
           }
         }
-        if (extent[0][i] !== min || extent[1][i] !== max) {
-          extentDomain = null;
-          extent[0][i] = min;
-          extent[1][i] = max;
+        if (extent[0] != min || extent[1] != max) {
+          if (i) yExtentDomain = null; else xExtentDomain = null;
+          extent[0] = min;
+          extent[1] = max;
           return true;
         }
       }
@@ -7713,10 +9289,10 @@ d3 = function() {
         g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
         d3.select("body").style("cursor", null);
         w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
+        dragRestore();
         event_({
           type: "brushend"
         });
-        d3_eventCancel();
       }
     }
     brush.x = function(z) {
@@ -7731,54 +9307,61 @@ d3 = function() {
       resizes = d3_svg_brushResizes[!x << 1 | !y];
       return brush;
     };
+    brush.clamp = function(z) {
+      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
+      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
+      return brush;
+    };
     brush.extent = function(z) {
       var x0, x1, y0, y1, t;
       if (!arguments.length) {
-        z = extentDomain || extent;
         if (x) {
-          x0 = z[0][0], x1 = z[1][0];
-          if (!extentDomain) {
-            x0 = extent[0][0], x1 = extent[1][0];
+          if (xExtentDomain) {
+            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
+          } else {
+            x0 = xExtent[0], x1 = xExtent[1];
             if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
             if (x1 < x0) t = x0, x0 = x1, x1 = t;
           }
         }
         if (y) {
-          y0 = z[0][1], y1 = z[1][1];
-          if (!extentDomain) {
-            y0 = extent[0][1], y1 = extent[1][1];
+          if (yExtentDomain) {
+            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
+          } else {
+            y0 = yExtent[0], y1 = yExtent[1];
             if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
             if (y1 < y0) t = y0, y0 = y1, y1 = t;
           }
         }
         return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
       }
-      extentDomain = [ [ 0, 0 ], [ 0, 0 ] ];
       if (x) {
         x0 = z[0], x1 = z[1];
         if (y) x0 = x0[0], x1 = x1[0];
-        extentDomain[0][0] = x0, extentDomain[1][0] = x1;
+        xExtentDomain = [ x0, x1 ];
         if (x.invert) x0 = x(x0), x1 = x(x1);
         if (x1 < x0) t = x0, x0 = x1, x1 = t;
-        extent[0][0] = x0 | 0, extent[1][0] = x1 | 0;
+        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
       }
       if (y) {
         y0 = z[0], y1 = z[1];
         if (x) y0 = y0[1], y1 = y1[1];
-        extentDomain[0][1] = y0, extentDomain[1][1] = y1;
+        yExtentDomain = [ y0, y1 ];
         if (y.invert) y0 = y(y0), y1 = y(y1);
         if (y1 < y0) t = y0, y0 = y1, y1 = t;
-        extent[0][1] = y0 | 0, extent[1][1] = y1 | 0;
+        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
       }
       return brush;
     };
     brush.clear = function() {
-      extentDomain = null;
-      extent[0][0] = extent[0][1] = extent[1][0] = extent[1][1] = 0;
+      if (!brush.empty()) {
+        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
+        xExtentDomain = yExtentDomain = null;
+      }
       return brush;
     };
     brush.empty = function() {
-      return x && extent[0][0] === extent[1][0] || y && extent[0][1] === extent[1][1];
+      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
     };
     return d3.rebind(brush, event, "on");
   };
@@ -7793,453 +9376,10 @@ d3 = function() {
     sw: "nesw-resize"
   };
   var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
-  d3.time = {};
-  var d3_time = Date, d3_time_daySymbols = [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ];
-  function d3_time_utc() {
-    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
-  }
-  d3_time_utc.prototype = {
-    getDate: function() {
-      return this._.getUTCDate();
-    },
-    getDay: function() {
-      return this._.getUTCDay();
-    },
-    getFullYear: function() {
-      return this._.getUTCFullYear();
-    },
-    getHours: function() {
-      return this._.getUTCHours();
-    },
-    getMilliseconds: function() {
-      return this._.getUTCMilliseconds();
-    },
-    getMinutes: function() {
-      return this._.getUTCMinutes();
-    },
-    getMonth: function() {
-      return this._.getUTCMonth();
-    },
-    getSeconds: function() {
-      return this._.getUTCSeconds();
-    },
-    getTime: function() {
-      return this._.getTime();
-    },
-    getTimezoneOffset: function() {
-      return 0;
-    },
-    valueOf: function() {
-      return this._.valueOf();
-    },
-    setDate: function() {
-      d3_time_prototype.setUTCDate.apply(this._, arguments);
-    },
-    setDay: function() {
-      d3_time_prototype.setUTCDay.apply(this._, arguments);
-    },
-    setFullYear: function() {
-      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
-    },
-    setHours: function() {
-      d3_time_prototype.setUTCHours.apply(this._, arguments);
-    },
-    setMilliseconds: function() {
-      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
-    },
-    setMinutes: function() {
-      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
-    },
-    setMonth: function() {
-      d3_time_prototype.setUTCMonth.apply(this._, arguments);
-    },
-    setSeconds: function() {
-      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
-    },
-    setTime: function() {
-      d3_time_prototype.setTime.apply(this._, arguments);
-    }
-  };
-  var d3_time_prototype = Date.prototype;
-  var d3_time_formatDateTime = "%a %b %e %X %Y", d3_time_formatDate = "%m/%d/%Y", d3_time_formatTime = "%H:%M:%S";
-  var d3_time_days = [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ], d3_time_dayAbbreviations = [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ], d3_time_months = [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ], d3_time_monthAbbreviations = [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ];
-  function d3_time_interval(local, step, number) {
-    function round(date) {
-      var d0 = local(date), d1 = offset(d0, 1);
-      return date - d0 < d1 - date ? d0 : d1;
-    }
-    function ceil(date) {
-      step(date = local(new d3_time(date - 1)), 1);
-      return date;
-    }
-    function offset(date, k) {
-      step(date = new d3_time(+date), k);
-      return date;
-    }
-    function range(t0, t1, dt) {
-      var time = ceil(t0), times = [];
-      if (dt > 1) {
-        while (time < t1) {
-          if (!(number(time) % dt)) times.push(new Date(+time));
-          step(time, 1);
-        }
-      } else {
-        while (time < t1) times.push(new Date(+time)), step(time, 1);
-      }
-      return times;
-    }
-    function range_utc(t0, t1, dt) {
-      try {
-        d3_time = d3_time_utc;
-        var utc = new d3_time_utc();
-        utc._ = t0;
-        return range(utc, t1, dt);
-      } finally {
-        d3_time = Date;
-      }
-    }
-    local.floor = local;
-    local.round = round;
-    local.ceil = ceil;
-    local.offset = offset;
-    local.range = range;
-    var utc = local.utc = d3_time_interval_utc(local);
-    utc.floor = utc;
-    utc.round = d3_time_interval_utc(round);
-    utc.ceil = d3_time_interval_utc(ceil);
-    utc.offset = d3_time_interval_utc(offset);
-    utc.range = range_utc;
-    return local;
-  }
-  function d3_time_interval_utc(method) {
-    return function(date, k) {
-      try {
-        d3_time = d3_time_utc;
-        var utc = new d3_time_utc();
-        utc._ = date;
-        return method(utc, k)._;
-      } finally {
-        d3_time = Date;
-      }
-    };
-  }
-  d3.time.year = d3_time_interval(function(date) {
-    date = d3.time.day(date);
-    date.setMonth(0, 1);
-    return date;
-  }, function(date, offset) {
-    date.setFullYear(date.getFullYear() + offset);
-  }, function(date) {
-    return date.getFullYear();
-  });
-  d3.time.years = d3.time.year.range;
-  d3.time.years.utc = d3.time.year.utc.range;
-  d3.time.day = d3_time_interval(function(date) {
-    var day = new d3_time(1970, 0);
-    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
-    return day;
-  }, function(date, offset) {
-    date.setDate(date.getDate() + offset);
-  }, function(date) {
-    return date.getDate() - 1;
-  });
-  d3.time.days = d3.time.day.range;
-  d3.time.days.utc = d3.time.day.utc.range;
-  d3.time.dayOfYear = function(date) {
-    var year = d3.time.year(date);
-    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
-  };
-  d3_time_daySymbols.forEach(function(day, i) {
-    day = day.toLowerCase();
-    i = 7 - i;
-    var interval = d3.time[day] = d3_time_interval(function(date) {
-      (date = d3.time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
-      return date;
-    }, function(date, offset) {
-      date.setDate(date.getDate() + Math.floor(offset) * 7);
-    }, function(date) {
-      var day = d3.time.year(date).getDay();
-      return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
-    });
-    d3.time[day + "s"] = interval.range;
-    d3.time[day + "s"].utc = interval.utc.range;
-    d3.time[day + "OfYear"] = function(date) {
-      var day = d3.time.year(date).getDay();
-      return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7);
-    };
-  });
-  d3.time.week = d3.time.sunday;
-  d3.time.weeks = d3.time.sunday.range;
-  d3.time.weeks.utc = d3.time.sunday.utc.range;
-  d3.time.weekOfYear = d3.time.sundayOfYear;
-  d3.time.format = function(template) {
-    var n = template.length;
-    function format(date) {
-      var string = [], i = -1, j = 0, c, p, f;
-      while (++i < n) {
-        if (template.charCodeAt(i) === 37) {
-          string.push(template.substring(j, i));
-          if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
-          if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
-          string.push(c);
-          j = i + 1;
-        }
-      }
-      string.push(template.substring(j, i));
-      return string.join("");
-    }
-    format.parse = function(string) {
-      var d = {
-        y: 1900,
-        m: 0,
-        d: 1,
-        H: 0,
-        M: 0,
-        S: 0,
-        L: 0
-      }, i = d3_time_parse(d, template, string, 0);
-      if (i != string.length) return null;
-      if ("p" in d) d.H = d.H % 12 + d.p * 12;
-      var date = new d3_time();
-      date.setFullYear(d.y, d.m, d.d);
-      date.setHours(d.H, d.M, d.S, d.L);
-      return date;
-    };
-    format.toString = function() {
-      return template;
-    };
-    return format;
-  };
-  function d3_time_parse(date, template, string, j) {
-    var c, p, i = 0, n = template.length, m = string.length;
-    while (i < n) {
-      if (j >= m) return -1;
-      c = template.charCodeAt(i++);
-      if (c === 37) {
-        p = d3_time_parsers[template.charAt(i++)];
-        if (!p || (j = p(date, string, j)) < 0) return -1;
-      } else if (c != string.charCodeAt(j++)) {
-        return -1;
-      }
-    }
-    return j;
-  }
-  function d3_time_formatRe(names) {
-    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
-  }
-  function d3_time_formatLookup(names) {
-    var map = new d3_Map(), i = -1, n = names.length;
-    while (++i < n) map.set(names[i].toLowerCase(), i);
-    return map;
-  }
-  function d3_time_formatPad(value, fill, width) {
-    value += "";
-    var length = value.length;
-    return length < width ? new Array(width - length + 1).join(fill) + value : value;
-  }
-  var d3_time_dayRe = d3_time_formatRe(d3_time_days), d3_time_dayAbbrevRe = d3_time_formatRe(d3_time_dayAbbreviations), d3_time_monthRe = d3_time_formatRe(d3_time_months), d3_time_monthLookup = d3_time_formatLookup(d3_time_months), d3_time_monthAbbrevRe = d3_time_formatRe(d3_time_monthAbbreviations), d3_time_monthAbbrevLookup = d3_time_formatLookup(d3_time_monthAbbreviations);
-  var d3_time_formatPads = {
-    "-": "",
-    _: " ",
-    "0": "0"
-  };
-  var d3_time_formats = {
-    a: function(d) {
-      return d3_time_dayAbbreviations[d.getDay()];
-    },
-    A: function(d) {
-      return d3_time_days[d.getDay()];
-    },
-    b: function(d) {
-      return d3_time_monthAbbreviations[d.getMonth()];
-    },
-    B: function(d) {
-      return d3_time_months[d.getMonth()];
-    },
-    c: d3.time.format(d3_time_formatDateTime),
-    d: function(d, p) {
-      return d3_time_formatPad(d.getDate(), p, 2);
-    },
-    e: function(d, p) {
-      return d3_time_formatPad(d.getDate(), p, 2);
-    },
-    H: function(d, p) {
-      return d3_time_formatPad(d.getHours(), p, 2);
-    },
-    I: function(d, p) {
-      return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
-    },
-    j: function(d, p) {
-      return d3_time_formatPad(1 + d3.time.dayOfYear(d), p, 3);
-    },
-    L: function(d, p) {
-      return d3_time_formatPad(d.getMilliseconds(), p, 3);
-    },
-    m: function(d, p) {
-      return d3_time_formatPad(d.getMonth() + 1, p, 2);
-    },
-    M: function(d, p) {
-      return d3_time_formatPad(d.getMinutes(), p, 2);
-    },
-    p: function(d) {
-      return d.getHours() >= 12 ? "PM" : "AM";
-    },
-    S: function(d, p) {
-      return d3_time_formatPad(d.getSeconds(), p, 2);
-    },
-    U: function(d, p) {
-      return d3_time_formatPad(d3.time.sundayOfYear(d), p, 2);
-    },
-    w: function(d) {
-      return d.getDay();
-    },
-    W: function(d, p) {
-      return d3_time_formatPad(d3.time.mondayOfYear(d), p, 2);
-    },
-    x: d3.time.format(d3_time_formatDate),
-    X: d3.time.format(d3_time_formatTime),
-    y: function(d, p) {
-      return d3_time_formatPad(d.getFullYear() % 100, p, 2);
-    },
-    Y: function(d, p) {
-      return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
-    },
-    Z: d3_time_zone,
-    "%": function() {
-      return "%";
-    }
-  };
-  var d3_time_parsers = {
-    a: d3_time_parseWeekdayAbbrev,
-    A: d3_time_parseWeekday,
-    b: d3_time_parseMonthAbbrev,
-    B: d3_time_parseMonth,
-    c: d3_time_parseLocaleFull,
-    d: d3_time_parseDay,
-    e: d3_time_parseDay,
-    H: d3_time_parseHour24,
-    I: d3_time_parseHour24,
-    L: d3_time_parseMilliseconds,
-    m: d3_time_parseMonthNumber,
-    M: d3_time_parseMinutes,
-    p: d3_time_parseAmPm,
-    S: d3_time_parseSeconds,
-    x: d3_time_parseLocaleDate,
-    X: d3_time_parseLocaleTime,
-    y: d3_time_parseYear,
-    Y: d3_time_parseFullYear
-  };
-  function d3_time_parseWeekdayAbbrev(date, string, i) {
-    d3_time_dayAbbrevRe.lastIndex = 0;
-    var n = d3_time_dayAbbrevRe.exec(string.substring(i));
-    return n ? i += n[0].length : -1;
-  }
-  function d3_time_parseWeekday(date, string, i) {
-    d3_time_dayRe.lastIndex = 0;
-    var n = d3_time_dayRe.exec(string.substring(i));
-    return n ? i += n[0].length : -1;
-  }
-  function d3_time_parseMonthAbbrev(date, string, i) {
-    d3_time_monthAbbrevRe.lastIndex = 0;
-    var n = d3_time_monthAbbrevRe.exec(string.substring(i));
-    return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i += n[0].length) : -1;
-  }
-  function d3_time_parseMonth(date, string, i) {
-    d3_time_monthRe.lastIndex = 0;
-    var n = d3_time_monthRe.exec(string.substring(i));
-    return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i += n[0].length) : -1;
-  }
-  function d3_time_parseLocaleFull(date, string, i) {
-    return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
-  }
-  function d3_time_parseLocaleDate(date, string, i) {
-    return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
-  }
-  function d3_time_parseLocaleTime(date, string, i) {
-    return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
-  }
-  function d3_time_parseFullYear(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.substring(i, i + 4));
-    return n ? (date.y = +n[0], i += n[0].length) : -1;
-  }
-  function d3_time_parseYear(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
-    return n ? (date.y = d3_time_expandYear(+n[0]), i += n[0].length) : -1;
-  }
-  function d3_time_expandYear(d) {
-    return d + (d > 68 ? 1900 : 2e3);
-  }
-  function d3_time_parseMonthNumber(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
-    return n ? (date.m = n[0] - 1, i += n[0].length) : -1;
-  }
-  function d3_time_parseDay(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
-    return n ? (date.d = +n[0], i += n[0].length) : -1;
-  }
-  function d3_time_parseHour24(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
-    return n ? (date.H = +n[0], i += n[0].length) : -1;
-  }
-  function d3_time_parseMinutes(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
-    return n ? (date.M = +n[0], i += n[0].length) : -1;
-  }
-  function d3_time_parseSeconds(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
-    return n ? (date.S = +n[0], i += n[0].length) : -1;
-  }
-  function d3_time_parseMilliseconds(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.substring(i, i + 3));
-    return n ? (date.L = +n[0], i += n[0].length) : -1;
-  }
-  var d3_time_numberRe = /^\s*\d+/;
-  function d3_time_parseAmPm(date, string, i) {
-    var n = d3_time_amPmLookup.get(string.substring(i, i += 2).toLowerCase());
-    return n == null ? -1 : (date.p = n, i);
-  }
-  var d3_time_amPmLookup = d3.map({
-    am: 0,
-    pm: 1
-  });
-  function d3_time_zone(d) {
-    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = ~~(Math.abs(z) / 60), zm = Math.abs(z) % 60;
-    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
-  }
-  d3.time.format.utc = function(template) {
-    var local = d3.time.format(template);
-    function format(date) {
-      try {
-        d3_time = d3_time_utc;
-        var utc = new d3_time();
-        utc._ = date;
-        return local(utc);
-      } finally {
-        d3_time = Date;
-      }
-    }
-    format.parse = function(string) {
-      try {
-        d3_time = d3_time_utc;
-        var date = local.parse(string);
-        return date && date._;
-      } finally {
-        d3_time = Date;
-      }
-    };
-    format.toString = local.toString;
-    return format;
-  };
-  var d3_time_formatIso = d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");
-  d3.time.format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
+  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
+  var d3_time_formatUtc = d3_time_format.utc;
+  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
+  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
   function d3_time_formatIsoNative(date) {
     return date.toISOString();
   }
@@ -8248,36 +9388,36 @@ d3 = function() {
     return isNaN(date) ? null : date;
   };
   d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
-  d3.time.second = d3_time_interval(function(date) {
-    return new d3_time(Math.floor(date / 1e3) * 1e3);
+  d3_time.second = d3_time_interval(function(date) {
+    return new d3_date(Math.floor(date / 1e3) * 1e3);
   }, function(date, offset) {
     date.setTime(date.getTime() + Math.floor(offset) * 1e3);
   }, function(date) {
     return date.getSeconds();
   });
-  d3.time.seconds = d3.time.second.range;
-  d3.time.seconds.utc = d3.time.second.utc.range;
-  d3.time.minute = d3_time_interval(function(date) {
-    return new d3_time(Math.floor(date / 6e4) * 6e4);
+  d3_time.seconds = d3_time.second.range;
+  d3_time.seconds.utc = d3_time.second.utc.range;
+  d3_time.minute = d3_time_interval(function(date) {
+    return new d3_date(Math.floor(date / 6e4) * 6e4);
   }, function(date, offset) {
     date.setTime(date.getTime() + Math.floor(offset) * 6e4);
   }, function(date) {
     return date.getMinutes();
   });
-  d3.time.minutes = d3.time.minute.range;
-  d3.time.minutes.utc = d3.time.minute.utc.range;
-  d3.time.hour = d3_time_interval(function(date) {
+  d3_time.minutes = d3_time.minute.range;
+  d3_time.minutes.utc = d3_time.minute.utc.range;
+  d3_time.hour = d3_time_interval(function(date) {
     var timezone = date.getTimezoneOffset() / 60;
-    return new d3_time((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
+    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
   }, function(date, offset) {
     date.setTime(date.getTime() + Math.floor(offset) * 36e5);
   }, function(date) {
     return date.getHours();
   });
-  d3.time.hours = d3.time.hour.range;
-  d3.time.hours.utc = d3.time.hour.utc.range;
-  d3.time.month = d3_time_interval(function(date) {
-    date = d3.time.day(date);
+  d3_time.hours = d3_time.hour.range;
+  d3_time.hours.utc = d3_time.hour.utc.range;
+  d3_time.month = d3_time_interval(function(date) {
+    date = d3_time.day(date);
     date.setDate(1);
     return date;
   }, function(date, offset) {
@@ -8285,8 +9425,8 @@ d3 = function() {
   }, function(date) {
     return date.getMonth();
   });
-  d3.time.months = d3.time.month.range;
-  d3.time.months.utc = d3.time.month.utc.range;
+  d3_time.months = d3_time.month.range;
+  d3_time.months.utc = d3_time.month.utc.range;
   function d3_time_scale(linear, methods, format) {
     function scale(x) {
       return linear(x);
@@ -8299,23 +9439,35 @@ d3 = function() {
       linear.domain(x);
       return scale;
     };
-    scale.nice = function(m) {
-      return scale.domain(d3_scale_nice(scale.domain(), function() {
-        return m;
-      }));
+    function tickMethod(extent, count) {
+      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
+      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
+        return d / 31536e6;
+      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
+    }
+    scale.nice = function(interval, skip) {
+      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
+      if (method) interval = method[0], skip = method[1];
+      function skipped(date) {
+        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
+      }
+      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
+        floor: function(date) {
+          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
+          return date;
+        },
+        ceil: function(date) {
+          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
+          return date;
+        }
+      } : interval));
     };
-    scale.ticks = function(m, k) {
-      var extent = d3_scaleExtent(scale.domain());
-      if (typeof m !== "function") {
-        var span = extent[1] - extent[0], target = span / m, i = d3.bisect(d3_time_scaleSteps, target);
-        if (i == d3_time_scaleSteps.length) return methods.year(extent, m);
-        if (!i) return linear.ticks(m).map(d3_time_scaleDate);
-        if (Math.log(target / d3_time_scaleSteps[i - 1]) < Math.log(d3_time_scaleSteps[i] / target)) --i;
-        m = methods[i];
-        k = m[1];
-        m = m[0].range;
-      }
-      return m(extent[0], new Date(+extent[1] + 1), k);
+    scale.ticks = function(interval, skip) {
+      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
+        range: interval
+      }, skip ];
+      if (method) interval = method[0], skip = method[1];
+      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
     };
     scale.tickFormat = function() {
       return format;
@@ -8328,105 +9480,75 @@ d3 = function() {
   function d3_time_scaleDate(t) {
     return new Date(t);
   }
-  function d3_time_scaleFormat(formats) {
-    return function(date) {
-      var i = formats.length - 1, f = formats[i];
-      while (!f[1](date)) f = formats[--i];
-      return f[0](date);
-    };
-  }
-  function d3_time_scaleSetYear(y) {
-    var d = new Date(y, 0, 1);
-    d.setFullYear(y);
-    return d;
-  }
-  function d3_time_scaleGetYear(d) {
-    var y = d.getFullYear(), d0 = d3_time_scaleSetYear(y), d1 = d3_time_scaleSetYear(y + 1);
-    return y + (d - d0) / (d1 - d0);
-  }
   var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
-  var d3_time_scaleLocalMethods = [ [ d3.time.second, 1 ], [ d3.time.second, 5 ], [ d3.time.second, 15 ], [ d3.time.second, 30 ], [ d3.time.minute, 1 ], [ d3.time.minute, 5 ], [ d3.time.minute, 15 ], [ d3.time.minute, 30 ], [ d3.time.hour, 1 ], [ d3.time.hour, 3 ], [ d3.time.hour, 6 ], [ d3.time.hour, 12 ], [ d3.time.day, 1 ], [ d3.time.day, 2 ], [ d3.time.week, 1 ], [ d3.time.month, 1 ], [ d3.time.month, 3 ], [ d3.time.year, 1 ] ];
-  var d3_time_scaleLocalFormats = [ [ d3.time.format("%Y"), d3_true ], [ d3.time.format("%B"), function(d) {
-    return d.getMonth();
-  } ], [ d3.time.format("%b %d"), function(d) {
-    return d.getDate() != 1;
-  } ], [ d3.time.format("%a %d"), function(d) {
-    return d.getDay() && d.getDate() != 1;
-  } ], [ d3.time.format("%I %p"), function(d) {
-    return d.getHours();
-  } ], [ d3.time.format("%I:%M"), function(d) {
-    return d.getMinutes();
-  } ], [ d3.time.format(":%S"), function(d) {
-    return d.getSeconds();
-  } ], [ d3.time.format(".%L"), function(d) {
+  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
+  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
     return d.getMilliseconds();
-  } ] ];
-  var d3_time_scaleLinear = d3.scale.linear(), d3_time_scaleLocalFormat = d3_time_scaleFormat(d3_time_scaleLocalFormats);
-  d3_time_scaleLocalMethods.year = function(extent, m) {
-    return d3_time_scaleLinear.domain(extent.map(d3_time_scaleGetYear)).ticks(m).map(d3_time_scaleSetYear);
+  } ], [ ":%S", function(d) {
+    return d.getSeconds();
+  } ], [ "%I:%M", function(d) {
+    return d.getMinutes();
+  } ], [ "%I %p", function(d) {
+    return d.getHours();
+  } ], [ "%a %d", function(d) {
+    return d.getDay() && d.getDate() != 1;
+  } ], [ "%b %d", function(d) {
+    return d.getDate() != 1;
+  } ], [ "%B", function(d) {
+    return d.getMonth();
+  } ], [ "%Y", d3_true ] ]);
+  var d3_time_scaleMilliseconds = {
+    range: function(start, stop, step) {
+      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
+    },
+    floor: d3_identity,
+    ceil: d3_identity
   };
-  d3.time.scale = function() {
+  d3_time_scaleLocalMethods.year = d3_time.year;
+  d3_time.scale = function() {
     return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
   };
-  var d3_time_scaleUTCMethods = d3_time_scaleLocalMethods.map(function(m) {
+  var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
     return [ m[0].utc, m[1] ];
   });
-  var d3_time_scaleUTCFormats = [ [ d3.time.format.utc("%Y"), d3_true ], [ d3.time.format.utc("%B"), function(d) {
-    return d.getUTCMonth();
-  } ], [ d3.time.format.utc("%b %d"), function(d) {
-    return d.getUTCDate() != 1;
-  } ], [ d3.time.format.utc("%a %d"), function(d) {
-    return d.getUTCDay() && d.getUTCDate() != 1;
-  } ], [ d3.time.format.utc("%I %p"), function(d) {
-    return d.getUTCHours();
-  } ], [ d3.time.format.utc("%I:%M"), function(d) {
-    return d.getUTCMinutes();
-  } ], [ d3.time.format.utc(":%S"), function(d) {
-    return d.getUTCSeconds();
-  } ], [ d3.time.format.utc(".%L"), function(d) {
+  var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
     return d.getUTCMilliseconds();
-  } ] ];
-  var d3_time_scaleUTCFormat = d3_time_scaleFormat(d3_time_scaleUTCFormats);
-  function d3_time_scaleUTCSetYear(y) {
-    var d = new Date(Date.UTC(y, 0, 1));
-    d.setUTCFullYear(y);
-    return d;
-  }
-  function d3_time_scaleUTCGetYear(d) {
-    var y = d.getUTCFullYear(), d0 = d3_time_scaleUTCSetYear(y), d1 = d3_time_scaleUTCSetYear(y + 1);
-    return y + (d - d0) / (d1 - d0);
-  }
-  d3_time_scaleUTCMethods.year = function(extent, m) {
-    return d3_time_scaleLinear.domain(extent.map(d3_time_scaleUTCGetYear)).ticks(m).map(d3_time_scaleUTCSetYear);
-  };
-  d3.time.scale.utc = function() {
-    return d3_time_scale(d3.scale.linear(), d3_time_scaleUTCMethods, d3_time_scaleUTCFormat);
-  };
-  d3.text = function() {
-    return d3.xhr.apply(d3, arguments).response(d3_text);
+  } ], [ ":%S", function(d) {
+    return d.getUTCSeconds();
+  } ], [ "%I:%M", function(d) {
+    return d.getUTCMinutes();
+  } ], [ "%I %p", function(d) {
+    return d.getUTCHours();
+  } ], [ "%a %d", function(d) {
+    return d.getUTCDay() && d.getUTCDate() != 1;
+  } ], [ "%b %d", function(d) {
+    return d.getUTCDate() != 1;
+  } ], [ "%B", function(d) {
+    return d.getUTCMonth();
+  } ], [ "%Y", d3_true ] ]);
+  d3_time_scaleUtcMethods.year = d3_time.year.utc;
+  d3_time.scale.utc = function() {
+    return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
   };
-  function d3_text(request) {
+  d3.text = d3_xhrType(function(request) {
     return request.responseText;
-  }
+  });
   d3.json = function(url, callback) {
-    return d3.xhr(url, "application/json", callback).response(d3_json);
+    return d3_xhr(url, "application/json", d3_json, callback);
   };
   function d3_json(request) {
     return JSON.parse(request.responseText);
   }
   d3.html = function(url, callback) {
-    return d3.xhr(url, "text/html", callback).response(d3_html);
+    return d3_xhr(url, "text/html", d3_html, callback);
   };
   function d3_html(request) {
     var range = d3_document.createRange();
     range.selectNode(d3_document.body);
     return range.createContextualFragment(request.responseText);
   }
-  d3.xml = function() {
-    return d3.xhr.apply(d3, arguments).response(d3_xml);
-  };
-  function d3_xml(request) {
+  d3.xml = d3_xhrType(function(request) {
     return request.responseXML;
-  }
-  return d3;
+  });
+  if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
 }();
\ No newline at end of file