Permuting vector in Matlab

Question

I have browsed in here for answers, but unsuccessful. I have code of the following type:

matrix = [1, 2, 3]';

   for start = 1:3

       if start == 1
          % nothing happens
       elseif start == 2
          matrix = [matrix(2),matrix(3),matrix(1)]'
       elseif start == 3
          matrix = [matrix(3),matrix(1),matrix(2)]'
       end

   end

I would like to change it so that I can use it for vectors that are much longer than the matrix here, so I would like to write it in more general form. (In words, I would like to be able to start at any value in the vector, go through till the end of the vector and from the start again till the value.)

does `matrix = [matrix(start:end);matrix(1:start-1)]` work for you? — user2999345, May 10 '17 at 12:27
Try [`circshift`](https://www.mathworks.com/help/matlab/ref/circshift.html)... — Dev-iL, May 10 '17 at 12:31
Yes, that works both I think. Thank you. (If you post it as answer I'll accept :) — LenaH, May 10 '17 at 12:44

score 1 · Accepted Answer · edited May 10 '17 at 13:09

1

Possibility 1) matrix = [matrix(start:end);matrix(1:start-1)]

Possibility 2) circshift command

edited May 10 '17 at 13:09

user2999345

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answered May 10 '17 at 12:45

LenaH

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Permuting vector in Matlab

1 Answers1