[Numpy-discussion] Piecewise functions.
ariciputi at pito.com
Tue Sep 27 02:10:32 CDT 2005
On Sep 26, 2005, at 7:43 PM, Travis Oliphant wrote:
> This is not a trivial problem in current versions of Numeric.
> What are you using, Numeric, numarray?
> In new scipy core (which replaces Numeric) and, I think, in
> numarray, you could say
> gta = x>a
> lea = x<=a
> y = x.copy()
> y[gta] = f2(x[gta])
> y[lea] = f1(x[lea])
> I've also just written a piecewise function for the new scipy core
> so you could write
> y = piecewise(x, x<=a, [f1,f2])
> -Travis Oliphant
Yes I'm using Numeric, and in the short to middle term I'll stay with
it. Anyway I'm aware of the effort you are spending in putting
together a Numeric replacement, and I'll look forward for a stable
release of it. In the meanwhile I'll use the tricks already suggested
Thanks again for your effort,
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