[Numpy-discussion] Matrix dot product over an axis(for a 3d array/list of matrices)
Emmanuel Bengio
bengioe at gmail.com
Thu Jul 15 12:38:57 EDT 2010
Hello,
I have a list of 4x4 transformation matrices, that I want to "dot with"
another list of the same size (elementwise).
Making a for loop that calculates the dot product of each is extremely slow,
I thought that maybe it's due to the fact that I have thousands of matrices
and it's a python for loop and there's a high Python overhead.
I do something like this:
>> for a,b in izip(Rot,Trans):
>> c.append(numpy.dot(a,b))
Is there a way to do this in one instruction?
Or is there a way to do this all using weave.inline?
--
Emmanuel
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/numpy-discussion/attachments/20100715/3ec9557e/attachment.html>
More information about the NumPy-Discussion
mailing list