Modifying the elements of a matrix using a condition
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My matrix is Y=[1 2 5 0; 3 4 0 0; 7 0 3 0; 0 0 0 1]
I want to replace zeros '0' with '0.001'
How can I do it basically?
Thanks a lot!
回答（1 个）
As long as 0 is exactly 0 (and not some very small value that's close to zero):
Y(Y==0) = 0.001;
Probably better would be, if all Y>=0
Y(Y<0.001) = 0.001;
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