MATLAB: How to randomize the rows of a matrix?

Question

I'm looking for an efficient way to manipulate a 40x151 matrix so that the rows are randomly scrambled.

Well done @tashuhka for spotting the duplicate! – Luis Mendo Oct 28 '15 at 10:35 — Luis Mendo, Oct 28 '15 at 10:35

score 4 · Accepted Answer · answered Oct 28 '15 at 04:10

4

I worked out the answer just as I was about to post.

new_matrix = old_matrix(randperm(40),:)

answered Oct 28 '15 at 04:10

1

+1 for thinking of `randperm` and not `randi`. The latter can sometimes give repeated values, which will cause your matrix rows to be repeated while shuffling. – Autonomous Oct 28 '15 at 08:45

1 Answers1