[Numpy-discussion] Extending an ndarray

Alan McIntyre alan.mcintyre@gmail....
Wed May 14 14:02:46 CDT 2008


Here's one way (probably not the most efficient or elegant):

# example original array
a=arange(1,26).reshape(5,5)

# place copy of 'a' into upper left corner of a larger array of zeros
b=zeros((10,10))
b[:5,:5]=a


On Wed, May 14, 2008 at 2:48 PM, Søren Nielsen
<soren.skou.nielsen@gmail.com> wrote:
> Hi,
>
> I've loaded an image into a ndarray. I'd like to extend the ndarray with a
> border of zeros all around the ndarray.. does anyone here know how to do
> this?
>
> Thanks,
> Soren
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