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5006
2007 Sep 27
1
A matrix multiplication
Dear all,
I'm having trouble using the 'apply' function to multiply some
arrays. Let A be a 500x2 array and B a 500x3 array. I need a vector C
which has 6 columns being the first three the result of A[,1] * B and
the second three the result of A[,2] * B. What is the most efficient way
to express that? I'm trying to use 'apply' with no success...
Thanks for your