On 2002-08-30 15:02, skrappy wrote:
Simple question. I am familiar with sumproduct, but I want it the other way around -- i want to take the product of sums. any ideas?
Suppose we have two columns. one is a vector of ones, and the other of threes. what i want is something that gives me (1*3)+(1*3)+ . . . for the lentgth of the vector.
On 2002-08-30 15:34, skrappy wrote:
Suppose we have two columns. one is a vector of ones, and the other of threes. what i want is something that gives me (1*3)+(1*3)+ . . . for the lentgth of the vector.
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