diff options
Diffstat (limited to 'numpy/core/defmatrix.py')
| -rw-r--r-- | numpy/core/defmatrix.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/numpy/core/defmatrix.py b/numpy/core/defmatrix.py index 9eb8e0011..b0d45972e 100644 --- a/numpy/core/defmatrix.py +++ b/numpy/core/defmatrix.py @@ -63,7 +63,10 @@ class matrix(N.ndarray): return data.astype(dtype) if isinstance(data, N.ndarray): - intype = N.dtypedescr(dtype) + if dtype is None: + intype = data.dtypedescr + else: + intype = N.dtypedescr(dtype) new = data.view(matrix) if intype != data.dtypedescr: return new.astype(intype) |