How to shuffle a matrix
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I have a matrix v=[0 1;1 0;0 1;1 0] I want to shuffle this matrix, which will give
x=[1 0;1 0;0 1;0 1] x=[1 0;0 1;1 0;0 1]
I mean all the possibilities of this type of arrangement. As I want to generate the chromosome for genetic algorithm
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Guillaume
on 4 Jun 2015
Assuming you just want to shuffle the rows, I would do it like this:
v = [0 1;1 0;0 1;1 0];
[~, ~, rowidx] = unique(v, 'rows'); %identical rows have the same index in rowidx
rowperms = unique(perms(rowidx), 'rows'); %generate all permutations of the indices, and remove duplicate
allv = cellfun(@(rowperm) v(rowperm, :), num2cell(rowperms, 2), 'UniformOutput', false)
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Guillaume
on 4 Jun 2015
Then don't bother with the first two lines and generate rowperms simply with:
rowperms = perms(1:size(v, 1));
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