matrix
显示 更早的评论
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
采纳的回答
Oleg Komarov
2012-5-28
idx = A < 0;
nnz( idx) % negative
nnz(~idx) % positive (including 0)
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Sparse Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
