On Mon, 20 Dec 2010, gutti wrote:
In Matlab the following line of code:
V3 = V1.*(V2>0)
What you certainly need is a zipWith function on matrices that lets you
write
Matrix.zipWith (\a1 a2 -> if a2>0 then a1 else 0) v1 v2
I can't see such a function in Matrix, but in Vector (zipVectorWith) that
can be lifted to Matrices by (Matrix.liftMatrix2). Maybe there is some
magic type class that already handles this - if there wouldn't be the
Element constraint, it would be the Applicative type class and the liftA2
function.
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