Hi, I want to generate 12 different sets of random variables whose elements be fixed in every run. Because these data are inputs of other codes and must be fixed. How can I do this.

matlab programing

[Walter Roberson]

Do you mean that the elements in one set must be a permutation of the elements in another set?

[jgg]

I agree with Walter. Do you want a permutation of 12 numbers, or do you just want to regenerate the same random variables each time. The rng command should do the latter.

Answer 1

[Image Analyst]

Use rng() to get the same sets of numbers each time:

% Initialize random number generator with a constant seed to start.
rng(1); % Pick any seed number you want
% The following 12 sets will always be the same in every run.
set1 = rand(1,5)
set2 = rand(1,5)
set3 = rand(1,5)
set4 = rand(1,5)
set5 = rand(1,5)
set6 = rand(1,5)
set7 = rand(1,5)
set8 = rand(1,5)
set9 = rand(1,5)
set10 = rand(1,5)
set11 = rand(1,5)
set12 = rand(1,5)