indexing arrays

Terry Reedy tjreedy at udel.edu
Fri Oct 10 17:17:42 EDT 2008


John [H2O] wrote:
> I'm having trouble slicing arrays:

If these are numpy arrays, as appears, rather that array module arrays, 
then the numpy list might be a better place.  In any case, using 'numpy' 
would have gotten the attention of someone scanning for posts about numpy.

> 
> I thought I could do the following:
>>>> i = array(range(140,149))
>>>> j = array(range(5,20))
>>>> a = acc[i,j]
> Traceback (most recent call last):
>   File "<string>", line 1, in <string>
> ValueError: shape mismatch: objects cannot be broadcast to a single shape
> 
> It's strange, because I can do this:
> 
>>>> a = acc[140:148,5:19]




More information about the Python-list mailing list