matrix

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Mate 2u
Mate 2u 2012-5-28
Hi, I have a very large matrix. I want to know how many positive elements I have in the matrix, and how many negative elements (non-zero).
Thanks

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Oleg Komarov
Oleg Komarov 2012-5-28
idx = A < 0;
nnz( idx) % negative
nnz(~idx) % positive (including 0)

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