randomly choose an element from each row in a matrix if it was equal to one
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i have the below matrix and i want to choose randomly one element from each row but only for the elements values equal to one and then save it in another matrix which will have the results (each row will have only one element equal to 1 ), anyone can help?
D= 1 1 0 1 1
1 1 1 1 1
0 0 0 0 0
1 1 1 1 1
1 0 1 0 1
0 0 1 0 0
0 0 0 0 0
0 0 1 0 0
0 0 0 0 0
0 1 0 0 0
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Torsten
am 26 Mai 2022
Bearbeitet: Torsten
am 26 Mai 2022
You mean
D= [1 1 0 1 1
1 1 1 1 1
0 0 0 0 0
1 1 1 1 1
1 0 1 0 1
0 0 1 0 0
0 0 0 0 0
0 0 1 0 0
0 0 0 0 0
0 1 0 0 0];
[N,M] = size(D);
DD = zeros(size(D));
for i = 1:N
idx = find(D(i,:)==1)
n = numel(idx);
if n ~= 0
in = randi(n);
DD(i,idx(in)) = 1.0;
end
end
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