I have a 4x4 array of 1's and I need to turn 3 of 4 ones to zero per row at random. So there will be a one 1 left in each row.
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A = [1 1 1 1; 1 1 1 1; 1 1 1 1; 1 1 1];
B = [1 0 0 0; 0 0 1 0; 0 1 0 0; 0 0 0 1]; % An example
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Image Analyst
on 8 May 2022
OK, thanks (I guess) for the announcement. Good luck with it. Have fun. 🙂
Torsten
on 8 May 2022
Better start with a zero matrix and replace one of the four zeros by a one in each row.
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the cyclist
on 8 May 2022
Here is one way:
N = 4;
x = (1:N)';
y = randi(N,N,1);
linearIndex = sub2ind([N,N],x,y);
B = zeros(N,N);
B(linearIndex) = 1
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