How to generate a no. of permutations(lets say 100) of a particular row of a matrix(consisting of 30 coloumns) and store the generated permutation into another array row wise??

Basically I am trying to generate population for my chromosome in genetic algorithm. I have made an array of 30 elements and now to generate the population, I have to permutate the elements of the array and store these permutations in form of a matrix row wise.Now can I do this using permute and other permutation functions in matlab or will I have to make a different method to generate this.Any reference codes shall be very helpful.

Answer 1

[Roger Stafford]

If r is the 30-element row vector being used, do this:

   m = 100;
   n = 30;
   [~,p] = sort(rand(m,n),2);
   s = reshape(r(p),m,n);

The rows of matrix s will each be a random permutation of r.

[Triveni]

Is it possible to generate 500 random permutations of

 [90    90   -45     0     0    45    45     0   -45    15    30   -30    75   -45    75   -75    45    45     0   -45    15    30  ]

[Image Analyst]

Yes

m = [90    90   -45     0     0    45    45     0   -45    15    30   -30    75   -45    75   -75    45    45     0   -45    15    30 ];
newSortingOrder = randperm(length(m));
mScrambled = m(newSortingOrder);

Just call that code 500 times to get 500 different permutations.

Answer 2

[Image Analyst]

Try randperm() or randi().

newSortingOrder = randperm(30);