Re: [Numpy-discussion] Sparse matrices in NumPy?

But memory is so cheap these days! ;-) I am a grad student, and have no money. :(

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However, the matrix is empty except for the main diagonal. Multiplying by a diagonalized matrix is just vectorized multiplication: a 0 0 0 b 0 . = 0 0 c My mistake - I need to multiply the 7731x7731 by a 7731x220 element matrix - square matrix times rectangular matrix, not just 2 diagonal matrices. Otherwise, the problem wouldn't be so hard. :)

-- That which does not kill you, didn't try hard enough.