How to find the column index of the first nonzero element for every row of a given matrix
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Dear all,
I have the following matrix
A=[1 1 1 1; 0 1 1 1; 0 0 0 1; 0 0 1 1; 0 1 1 1]
and I would like to get an output vector v listing the column indices of the first nonzero element for every row of A:
v=[1;2;4;3;2]
How can I do this? Thanks in advance, I appreciate your time and help.
2 Comments
Accepted Answer
Arif Hoq
on 6 Mar 2022
you can find your answer here
Just follow this:
A=[1 1 1 1; 0 1 1 1; 0 0 0 1; 0 0 1 1; 0 1 1 1];
[~,output]=max(A,[],2)
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