Hi Colin,
We are interested in using your PyMatrix packages (It' numarray not Numeric,
right?).
First though, someone in my lab had the following concern:
What if I actually need the element-wise multiplication ?
(In other words: The Matlab .* operator)
I understand that python does not allow to invent new operator symbols.
How about multiplying a Matrix with a Numarray ?
Is it possible to have a 'numarray view' of a Matrix object ? (I'm thinking
of two differently typed objects sharing one "value-memory space", so that
essentially the type determines which multiplication is being used ...)
Thanks,
Sebastian Haase
----- Original Message -----
From: "Colin J. Williams"

PyMatrix is available for test and review. http://www3.sympatico.ca/cjw

PyMatrix provides access to basic matrix arithmetic, using Python and numarray.

Examples: A * B => the product of matrices A and B A.I => the inverse of matrix A A.EVectors => the eigenvectors of A A.var(0) => the variances of the columns of A (a.T*a).I * a.T*b => the solution (x) for a * x = b, where a is a matrix and b a column vector

This package was developed on a Windows XP. I would appreciate comments, particularly with respect to usage on other systems.

Colin W.

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