[Numpy-discussion] Optimizing mean(axis=0) on a 3D array
Martin Spacek
numpy at mspacek.mm.st
Mon Aug 28 03:13:14 EDT 2006
Martin Spacek wrote:
>
> Actually, your original version is just as fast as the take() version.
> Both are about 9X faster than numpy.mean() on my system. I prefer the
> take() version because you only have to pass a single argument to
> mean_accum()
I forgot to mention that all my indices are, for now, sorted. I just
tried shuffling them (as you did), but I still get the same 9x
improvement in speed, so I don't know why you only get a 4x improvement
on your system.
Martin
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