[Numpy-discussion] np.vstack vs. np.stack

[Robert Kern]

On Thu, Nov 9, 2017 at 1:30 AM, Joe <solarjoe at posteo.org> wrote:
>
> Hello,
>
> I have a question and hope that you can help me.
>
> The doc for vstack mentions that "this function continues to be supported
for backward compatibility, but you should prefer np.concatenate or
np.stack."
>
> Using vstack was convenient because "the arrays must have the same shape
along all but the first axis."
>
> So it was possible to stack an array (3,) and (2, 3) to a (3, 3) array
without using e.g. atleast_2d on the (3,) array.
>
> Is there a possibility to mimic that behavior with np.concatenate or
np.stack?

Quite frankly, I ignore the documentation as I think it's recommendation is
wrong in these cases. Vive la vstack!

--
Robert Kern
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/numpy-discussion/attachments/20171109/80fc7b64/attachment-0001.html>