[Numpy-discussion] Bug in resize method?
Stefan van der Walt
stefan at sun.ac.za
Wed Aug 29 11:58:57 EDT 2007
On Wed, Aug 29, 2007 at 09:42:50AM -0600, Charles R Harris wrote:
> Hi all,
> This looks like a bug to me.
> >>> a = arange(6).reshape(2,3)
> >>> a.resize((3,3))
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> ValueError: cannot resize this array: it does not own its data
>From the docstring of a.resize:
Change size and shape of self inplace. Array must own its own memory and
not be referenced by other arrays. Returns None.
The reshaped array is a view on the original data, hence it doesn't
In : a = N.arange(6).reshape(2,3)
In : a.flags
C_CONTIGUOUS : True
F_CONTIGUOUS : False
OWNDATA : False
WRITEABLE : True
ALIGNED : True
UPDATEIFCOPY : False
> >>> a = arange(6).resize((2,3))
> >>> a
> `a` has no value and no error is raised.
It is because `a` is now None.
More information about the NumPy-Discussion