Hi all,
I get some issue using gradient on an array created from memmap:
PC-Fred[pts/10]:~/{11}/> ipython -p numpy
Python 2.6.7 (r267:88850, Jul 10 2011, 08:11:54)
Type "copyright", "credits" or "license" for more information.
IPython 0.10.2 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object'. ?object also works, ?? prints more.
IPython profile: numpy
PC-Fred[12:39:18]:~/{1}/> a=array([[1.,2.], [3., 4.]], dtype='f')
PC-Fred[12:40:24]:~/{2}/> a.tofile('a.sep')
PC-Fred[12:40:32]:~/{3}/> del a
PC-Fred[12:40:45]:~/{4}/> a = memmap('a.sep', mode='r', dtype='f',
shape=(2,2))
PC-Fred[12:40:49]:~/{5}/> x, y = gradient(a, 1, 1)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
/mnt/common/home/fred/<ipython console> in <module>()
/usr/lib/pymodules/python2.6/numpy/lib/function_base.py in gradient(f,
*varargs)
842 for axis in range(N):
843 # select out appropriate parts for this dimension
--> 844 out = np.zeros_like(f).astype(otype)
845 slice1[axis] = slice(1, -1)
846 slice2[axis] = slice(2, None)
/usr/lib/pymodules/python2.6/numpy/core/memmap.py in
__array_finalize__(self, obj)
255 if hasattr(obj, '_mmap'):
256 self._mmap = obj._mmap
--> 257 self.filename = obj.filename
258 self.offset = obj.offset
259 self.mode = obj.mode
AttributeError: 'memmap' object has no attribute 'filename'
Sounds like a bug or not?
Any clue?
TIA.
Cheers,
PS : NumPy 1.5.1 on wheezy debian box
--
Fred
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