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How to multiply all elements of matrix

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Ram k
Ram k 2016-5-6
回答： Stephen23 2016-5-6
Suppose I have a matrix
0 0.3333 0 0 0.6667
0 0 1.0000 0 0
0 0 0 0 1.0000
1.0000 0 0 0 0
0.4000 0 0 0.2000 0.4000
I want to multiply nonzero elements of above matrix i.e. 0.3333*0.6667*1*1*1*0.4*0.2*0.4=0.00711. How to do this.

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2016-5-6
prod(nonzeros(A(:)))
Stephen23
Stephen23 2016-5-6
prod(A(A~=0))

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