A relatively simply but useful matrix operation to add to Igor would be the tensor product operation. The Tensor Product of two matrices arises in mathematics when two vector spaces are composed to make one larger vector space. It is used commonly in quantum mechanics when studying the interaction of two systems. I posted a code snippet that works for two square matrices, but the tensor product operation is more general. (In Matlab, this operation is implemented as the "kron" function.)
A.G.
WaveMetrics, Inc.
November 11, 2009 at 09:30 am - Permalink