[Numpy-discussion] kind of a matrix multiplication

Martin Raspaud martin.raspaud@smhi...
Tue Oct 11 04:48:51 CDT 2011


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On 11/10/11 07:49, Martin Raspaud wrote:
> Hi all,
[...]
> I'm looking for the operation needed to get the two (stacked) vectors
> array([[0, 1, 2],
>        [6, 8, 10]]))
> or its transpose.

Hi again,

Here is a solution I just found:
np.einsum("ik, jki->ij", stack, mat)
array([[  0.,   1.,   2.],
       [  6.,   8.,  10.]])


Best regards,
Martin
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