[Numpy-discussion] Added atleast_nd, request for clarification/cleanup of atleast_3d

[Benjamin Root]

I don't see how one could define a spec that would take an arbitrary array
of indices at which to place new dimensions. By definition, you don't know
how many dimensions are going to be added. If you knew, then you wouldn't
be calling this function. I can only imagine simple rules such as 'left' or
'right' or maybe something akin to what at_least3d() implements.

On Wed, Jul 6, 2016 at 3:20 PM, Joseph Fox-Rabinovitz <
jfoxrabinovitz at gmail.com> wrote:

> On Wed, Jul 6, 2016 at 2:57 PM, Eric Firing <efiring at hawaii.edu> wrote:
> > On 2016/07/06 8:25 AM, Benjamin Root wrote:
> >>
> >> I wouldn't have the keyword be "where", as that collides with the notion
> >> of "where" elsewhere in numpy.
> >
> >
> > Agreed.  Maybe "side"?
>
> I have tentatively changed it to "pos". The reason that I don't like
> "side" is that it implies only a subset of the possible ways that that
> the position of the new dimensions can be specified. The current
> implementation only puts things on one side or the other, but I have
> considered also allowing an array of indices at which to place new
> dimensions, and/or a dictionary keyed by the starting ndims. I do not
> think "side" would be appropriate for these extended cases, even if
> they are very unlikely to ever materialize.
>
>     -Joe
>
> > (I find atleast_1d and atleast_2d to be very helpful for handling
> inputs, as
> > Ben noted; I'm skeptical as to the value of atleast_3d and atleast_nd.)
> >
> > Eric
> >
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