Re: [Numpy-discussion] Piecewise functions.

[Alan G I. <ai...@am...>]

On Thu, 22 Sep 2005, Andrea Riciputi apparently wrote:=20
> this is probably an already discussed problem, but I've not been able=20
> to find a solution even after googling a lot.=20

> I've a piecewise defined function:=20

>         /=20
>         | f1(x)    if x <=3D a=20
> f(x) =3D |=20
>         | f2(x)    if x > a=20
>         \=20

> where f1 and f2 are not defined outside the above range. How can I=20
> define such a function in Python in order to apply (map) it to an=20
> array ranging from values smaller to values bigger than a?=20

I suspect I do not understand your question.
But perhaps you want this:

def f(x):
    return x<=3Da and f1(x) or f2(x)

fwiw,
Alan