in reply to Why dies this work in matlab and not PDL?

I'd be interested to see what kind of answer matlab is coming up with. For the dimensions that you mention, matrix multiplication is not possible. For two matricies A (with Ar rows and Ac columns) and B (with Br rows and Bc columns), the matrix product A x B = C is possible iff Ac = Br and C will have Ar rows and Bc columns.

thor

Feel the white light, the light within
Be your own disciple, fan the sparks of will
For all of us waiting, your kingdom will come

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