indexing question

[wes weston]

Faheem Mitha wrote:
> Dear People,
> 
> Suppose I create a numarray arry (say). A numeric array would be fine
> too; it probably does not matter. 
> 
> 
>>>>import numarray
>>>>foo = numarray.reshape(numarray.arange(9),(3,3))
> 
> array([[ 0,  1,  2,  3],
>        [ 4,  5,  6,  7],
>        [ 8,  9, 10, 11],
>        [12, 13, 14, 15]])
> 
> Is there some way to select the indexes corresponding only to (say)
> two rows or columns?
> 
> ie suppose I just want the first and the fourth row or the first and
> third columns? Is there some clean way to do this which does not
> involve extract individual rows or columns?
> 
> Ie. I want something like
> 
>>>>foo[?,:]
> 
> array([[ 0,  1,  2,  3],
>        [12, 13, 14, 15]])
> 
> etc. 
> 
> Suggestions appreciated. Thanks in advance.
> 
>                                                Faheem.

Faheem,
    On the following like, I see something like what you
want.

http://matpy.sourceforge.net/MatPy/node3.html

wes