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matlabgenetic-algorithm

Arranging Rows and Columns in MATLAB according to a given permutation

I have a matrix of values I intend to use in my objective function. For a given arrangement of numbers, randperm(n), i would like to arrange both rows and columns according to this random arrangement. For example if: randperm(8) =1 4 2 3 6 8 7 5 arrange both rows and columns of matrix A according to this arrangement.

A = [0 3 4 1 5 1 1 3;
     3 0 3 4 1 1 5 2;
     4 3 0 1 2 1 1 4;
     1 4 1 0 5 1 1 4;
     5 1 2 5 0 5 5 1;
     1 1 1 1 5 0 5 2;
     1 5 1 1 5 5 0 4;
     3 2 4 4 1 2 4 0];
Solution

  • You can use randperm result directly:

    order = randperm(8);
A = A(order, order);