diff options
Diffstat (limited to 'numpy/ma/core.py')
| -rw-r--r-- | numpy/ma/core.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/numpy/ma/core.py b/numpy/ma/core.py index deddacfdc..0035cd9f7 100644 --- a/numpy/ma/core.py +++ b/numpy/ma/core.py @@ -2558,7 +2558,8 @@ def _arraymethod(funcname, onmask=True): if not onmask: result.__setmask__(mask) elif mask is not nomask: - result.__setmask__(getattr(mask, funcname)(*args, **params)) + # __setmask__ makes a copy, which we don't want + result._mask = getattr(mask, funcname)(*args, **params) return result methdoc = getattr(ndarray, funcname, None) or getattr(np, funcname, None) if methdoc is not None: |