[Numpy-discussion] Cutoff small values of a vector to stop underflow

Rick Muller rpmuller@gmail....
Fri Sep 3 11:49:21 CDT 2010


Sweet! Guess I need to learn more about numpy indexing: this is pretty
powerful.

On Fri, Sep 3, 2010 at 10:42 AM, Keith Goodman <kwgoodman@gmail.com> wrote:

> On Fri, Sep 3, 2010 at 9:39 AM, Rick Muller <rpmuller@gmail.com> wrote:
> > There just *has* to be a better way of doing this. I want to cut off
> small
> > values of a vector, and I'm currently doing something like:
> >
> >>>> for i in xrange(n):
> >>>>    if abs(A[i]) < tol: A[i] = 0
> >
> > Which is slow, since A can be really long.
>
> A[np.absolute(A) < tol] = 0
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-- 
Rick Muller
rpmuller@gmail.com
505-750-7557
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