# [Numpy-discussion] Sum over array elements

Patrick Marsh patrickmarshwx@gmail....
Mon Apr 12 09:29:51 CDT 2010

```a = np.arange(10)
b = (a[::2]).sum()

Patrick

On Mon, Apr 12, 2010 at 9:21 AM, Nicola Creati <ncreati@inogs.it> wrote:

> Hello,
> I want to calculate, given a one dimension array, the sum over every two
> elements of the array.
> I found this working solution:
>
> a = N.arange(10)
> b = a.reshape(a, (5, 2))
> c = b.sum(axis=1)
>
> Is there any better solution?
>
> Thanks,
>
> Nicola Creati
>
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--
Patrick Marsh
Ph.D. Student / NSSL Liaison to the HWT
School of Meteorology / University of Oklahoma
Cooperative Institute for Mesoscale Meteorological Studies
National Severe Storms Laboratory
http://www.patricktmarsh.com
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