[Numpy-discussion] Faster way to generate a rotation matrix?
Wed Mar 4 01:28:11 CST 2009
On 4-Mar-09, at 1:58 AM, Robert Kern wrote:
> I'm pretty sure that's exactly why he did it, and that's what he's
> calling evil.
As ever, such nuance is lost on me. I didn't bother to check whether
or not it was in the original function. Robert to the rescue. :)
It's a neat trick, actually, though I'll probably shoot myself in the
foot if I try to use it. I've taken to the somewhat unpythonic
convention of passing in "out" arrays everywhere to avoid repeated
def foo(x, y, out=None):
if out == None:
out = np.empty(...)
It's a neat trick, the default argument one, but I'd probably shoot
myself in the foot with it. Also, I guess it only works when the
dimensions are fixed (like in this case).
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