1 ## Copyright (C) 2008 Michel D. Schmid <michaelschmid@users.sourceforge.net>
4 ## This program is free software; you can redistribute it and/or modify it
5 ## under the terms of the GNU General Public License as published by
6 ## the Free Software Foundation; either version 2, or (at your option)
9 ## This program is distributed in the hope that it will be useful, but
10 ## WITHOUT ANY WARRANTY; without even the implied warranty of
11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 ## General Public License for more details.
14 ## You should have received a copy of the GNU General Public License
15 ## along with this program; see the file COPYING. If not, see
16 ## <http://www.gnu.org/licenses/>.
19 ## @deftypefn {Function File} {} @var{retmatrix} = __randomisecols (@var{matrix})
20 ## @code{__randomisecols} takes a matrix as input argument and changes the order
21 ## of the columns. The rows aren't affected.
26 function [retmatrix] = __randomisecols(matrix)
28 ## check number of inputs
29 error(nargchk(1,1,nargin));
32 nCols = size(matrix,2);
34 # now create random column order
35 colOrder = randperm(nCols);
37 # now sort the matrix new
38 retmatrix = matrix(:,[colOrder]);
43 %!# no test possible, contains randperm which is using
44 %!# some randome functions