I know there are probably alternatives for this with the standard library, but I think that would kill the speed I get with numarray:
Say I have two 2-dimensional numarrays (x_mat and y_mat, say), and a function f(x,y) that I would like to evaluate at every index. Basically I want to be able to say f(x_mat,y_mat) and have it return a numarray with the same shape and element wise evaluation of f. I know, I want a ufunc, but they look scary to write my own. Are there any functions that do this? Or is writing ufuncs easier than it seems?
Thanks, -Chris Neff
numarray has a fixed set of ufuncs. Section 5.1 of the docs.
Section 5.3 points to a method for writing the f(i, j).
Unfortunately, it appears to require that f be written in C and assumes that the user operating system has a compiler, which windows, in general, does not.
It would be good if f could be written in Python.
Colin W. -- http://mail.python.org/mailman/listinfo/python-list
