How to work with arrays with values of Log(0)?

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I am working with arrays that include zero values. One transformation I must do is apply logarithms to each value in the matrix. In the result, I need to do other operations but I have to skip the values that do not have a result of the logarithm. How can I do that?
Thanks

Answers (1)

David Hill
David Hill on 8 Dec 2020
a=log(initialArray);
idx=initialArray~=0;
a(idx)=5*a(idx);%other calculations only perform on non-zero values of initial array

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