How to shuffle a matrix

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Aryama Mandal 2015-6-4

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评论： Aryama Mandal 2015-6-4

采纳的回答： Guillaume

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 2015-6-4

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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)