[Numpy-discussion] newbie question - summing a list of arrays

Chris Withers chris@simplistix.co...
Tue Mar 18 10:54:49 CDT 2008


Manuel Metz wrote:
> Hm, in this case you can do it like this:
> 
> numpy.sum(numpy.array([numpy.sum(v) for k,v in data.items()]))

maybe:

numpy.num(data.values(),axis=0)

...would also work?

I can't actually use that though as the reason I need to do this is part 
of building stacked bar charts in matplotlib.

Chris

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