[Numpy-discussion] Does np.std() make two passes through the data?

josef.pktd@gmai... josef.pktd@gmai...
Mon Nov 22 13:15:00 CST 2010


On Mon, Nov 22, 2010 at 2:04 PM, Keith Goodman <kwgoodman@gmail.com> wrote:
> On Mon, Nov 22, 2010 at 11:00 AM,  <josef.pktd@gmail.com> wrote:
>
>> I don't think that works for complex numbers.
>> (statsmodels has now a preference that calculations work also for
>> complex numbers)
>
> I'm only supporting int32, int64, float64 for now. Getting the other
> ints and floats should be easy. I don't have plans for complex
> numbers. If it's not a big change then someone can add support later.

Fair enough, but if you need numerical derivatives, then complex
support looks useful.

Josef

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