[Numpy-discussion] use slicing as argument values?

Chao YUE chaoyuejoy@gmail....
Fri Jul 13 16:29:30 CDT 2012


Thanks Robert. This is exactly what I want. I have a feeling that there
must be something in numpy that can do the job and I didn't know. Thanks
again,

Chao

2012/7/13 Robert Kern <robert.kern@gmail.com>

> On Thu, Jul 12, 2012 at 10:32 PM, Chao YUE <chaoyuejoy@gmail.com> wrote:
> > Thanks all for the discussion. Actually I am trying to use something like
> > numpy ndarray indexing in the function. Like when I call:
> >
> > func(a,'1:3,:,2:4'), it knows I want to retrieve a[1:3,:,2:4], and
> > func(a,'1:3,:,4') for a[1:3,:,4] ect.
> > I am very close now.
>
> [~]
> |1> from numpy import index_exp
>
> [~]
> |2> index_exp[1:3,:,2:4]
> (slice(1, 3, None), slice(None, None, None), slice(2, 4, None))
>
> --
> Robert Kern
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Chao YUE
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