From 3839bfe9a3d3c9015260b9500bff597fbfe5595b Mon Sep 17 00:00:00 2001 From: "Eric S. Raymond" Date: Fri, 24 Jun 2011 02:45:39 -0400 Subject: Live-feed support for Google Earth. --- NEWS | 3 +- SConstruct | 3 +- gegps | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ gps.xml | 29 +++++++++++++++--- 4 files changed, 130 insertions(+), 6 deletions(-) create mode 100644 gegps diff --git a/NEWS b/NEWS index 79f7041b..6a993778 100644 --- a/NEWS +++ b/NEWS @@ -12,7 +12,8 @@ an scons build recipe. Direct support for activation of gpsd from Mac OS/X systemd. gpsdecode can now filter reports by RTCM2, RTCM3, or AIS message type. NMEA HEHDT is implemented. Remote gpsd instances - ca now be used as data sources via a gpsd:// URL. + can now be used as data sources via a gpsd:// URL. There is a client + for live-feeding GPSD data to Google Earth. * Mon Mar 21 2011 Eric S. Raymond - 2.96 Bumped maximum channel count to 32 to accommodate GPS+GLONASS devices. diff --git a/SConstruct b/SConstruct index 0eb441f8..ed01ed62 100644 --- a/SConstruct +++ b/SConstruct @@ -738,7 +738,7 @@ if cxx and env["libgpsmm"]: testprogs.append(test_gpsmm) # Python programs -python_progs = ["gpscat", "gpsfake", "gpsprof", "xgps", "xgpsspeed"] +python_progs = ["gpscat", "gpsfake", "gpsprof", "xgps", "xgpsspeed", "gegps"] python_modules = Glob('gps/*.py') # Build Python binding @@ -884,6 +884,7 @@ python_manpages = { "gpscat.1" : "gpscat.xml", "xgpsspeed.1" : "gps.xml", "xgps.1" : "gps.xml", + "gegps.1" : "gps.xml", } manpage_targets = [] diff --git a/gegps b/gegps new file mode 100644 index 00000000..725568ef --- /dev/null +++ b/gegps @@ -0,0 +1,101 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- +# +# usage: gegps [-i] [-d kmldir] +# +# Feed location data from a running GPSD to a Google Earth instance. +# The -d argument is the location of the Google Earth installation +# directory. If not specified, it defaults to the current directory. +# +# If you have the free (non-subscription) version, start by running with +# the -i option to drop a clue in the Google Earth installation directory, +# as 'Open_in_Google_Earth_RT_GPS.kml', then open that file in Places +# (File > Open...), +# +# The basic recipe is here: +# http://tjworld.net/wiki/Linux/Ubuntu/GoogleEarthPlusRealTimeGPS +# +# This code originally by Jaroslaw Zachwieja and a guy referring +# to himself/herself as TJ(http://tjworld.net) +# Modified by Chen Wei for use with gpsd +# Cleaned up and adapted for the GPSD project by Eric S. Raymond. + +import time, os, gps, getopt +import sys + +KML_OPEN_IN_GE = '''\ + + + + Realtime GPS + 1 + + Realtime_GPS.kml + onInterval + + + +''' + +def kmlize(tpv): + '''http://code.google.com/apis/kml/documentation/kmlreference.html + for official kml document''' + latitude = tpv['lat'] + longitude = tpv['lon'] + speed_in = tpv['speed'] # meter/second + speed = speed_in * gps.MPS_TO_KPH # Km/h + heading = int(round(tpv['track'], 0)) + altitude = tpv['alt'] + + if speed < 1: + heading = 0 + + return """ + + + %s km/h,heading %s + Realtime GPS feeding + + %s + %s + + + %s,%s,%s + + +""" % (speed,heading,longitude,latitude,longitude,latitude,altitude) + + +if __name__ == "__main__": + session = gps.gps() + # must include gps.WATCH_NEWSTYLE on my system(debian squeeze), otherwise + # there is no TPV report + session.stream(gps.WATCH_ENABLE|gps.WATCH_NEWSTYLE) + + kmldir = "." + initialize = False + (options, arguments) = getopt.getopt(sys.argv[1:], "d:i") + for (opt, arg) in options: + if opt == '-d': + kmldir = arg + elif opt == '-i': + initialize = True + + if initialize: + f = open(os.path.join(kmldir, 'Open_in_Google_Earth_RT_GPS.kml'), 'w') + f.write(KML_OPEN_IN_GE) + f.close() + else: + try: + while True: + report = session.next() + if report['class'] == 'TPV': + f = open(os.path.join(kmldir, 'Realtime_GPS.kml'), 'w') + f.write(kmlize(report)) + f.close() + except StopIteration: + pass + except KeyboardInterrupt: + print 'gegpsd stopped ' + +# end diff --git a/gps.xml b/gps.xml index d3efb855..75de1c5c 100644 --- a/gps.xml +++ b/gps.xml @@ -88,9 +88,6 @@ BSD terms apply: see the file COPYING in the distribution root for details. - - gpxlogger - gpxlogger -D debug-level @@ -110,6 +107,11 @@ BSD terms apply: see the file COPYING in the distribution root for details. + + gegps + -d directory + -i + DESCRIPTION @@ -298,6 +300,24 @@ listens to DBUS broadcasts from defaulted to, you may give a server-port-device specification as arguments. + +gegps + +This program collects fixes from gpsd +and feeds them to a running instance of Google Earth for live location +tracking. + +The argument is the location of the Google +Earth installation directory. If not specified, it defaults to the +current directory. + +If you have the free (non-subscription) version, start by +running with the option to drop a clue in the +Google Earth installation directory, as +'Open_in_Google_Earth_RT_GPS.kml', then open that file in Places (File +> Open...). Run gpsd in the normal way +after that. + SEE ALSO @@ -320,7 +340,8 @@ arguments. Remco Treffcorn, Derrick Brashear, Russ Nelson & Eric S. Raymond, Jeff Francis (cgps). Amaury Jacquot sxpert@sxpert.org & Petter Reinholdtsen pere@hungry.com (gpxlogger). -Chris Kuethe chris.kuethe@gmail.com (gpxlogger). +Chris Kuethe chris.kuethe@gmail.com (gpxlogger), Chen +Wei weichen302@aol.com (gegps). This manual page by Eric S. Raymond esr@thyrsus.com. -- cgit v1.2.1