Re: [Numpy-discussion] The NumPy Fortran-ordering quiz

[Charles R H. <cha...@gm...>]

On 10/17/06, Lisandro Dalcin <da...@gm...> wrote:
>
> I was surprised by this
>
> In [14]: array([[1,2,3],[4,5,6]]).reshape((3,2),order='F')
> Out[14]:
> array([[1, 5],
>        [4, 3],
>        [2, 6]])


This one still looks wrong.

In [15]: array([1,2,3,4,5,6]).reshape((3,2),order='F')
> Out[15]:
> array([[1, 2],
>        [3, 4],
>        [5, 6]])



 This one is fixed,

In [3]: array([[1,2,3,4,5,6]]).reshape((3,2),order='F')
Out[3]:
array([[1, 4],
       [2, 5],
       [3, 6]])

I also don't understand why a copy is returned if 'F' just fiddles with the
indices and strides; the underlying data should be the same, just the view
changes. FWIW, I think both examples should be returning views.

Chuck