how to find the number of negative cells in matrix ?

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yosra
yosra 2022-11-12
评论： Voss 2022-11-12
how to find the number of negative cells in matrix

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Voss
Voss 2022-11-12
Ran in:
A = randn(5) % 5-by-5 random matrix
A = 5×5
-0.1182 1.1458 -0.7931 -1.2282 -0.4492 1.9749 -0.0542 -0.3788 0.2144 -1.0333 1.3979 1.2310 2.3602 0.7574 -0.1836 0.6968 -0.3670 -1.5154 0.6693 -0.6576 0.4933 1.8072 2.2063 0.2762 -1.3458
nnz(A < 0) % number of elements of A that are < 0
ans = 12

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