[Numpy-discussion] accumulating version of numpy.put?

[Eric Wieser]

Frank,

I think you’re looking for np.add.at(a, ind, v), documented here
<https://docs.scipy.org/doc/numpy/reference/generated/numpy.ufunc.at.html>

Eric
​

On Fri, 19 May 2017 at 17:13 Frank Horowitz <frank at horow.net> wrote:

> Hi All,
>
> In the numpy library, are there any equivalences of numpy.put to
> additively store the values rather than simply overwriting?
>
> Alternatively, would there be significant speed penalties to code of the
> form
>
> a.flat[ind] += v
>
> Thanks in advance for any help you might be able to provide!
>
> Frank Horowitz
>
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