randomize.m

Randomizing function for vectors and attributes

function B=randomize(A,rowcol)

% randomize row orders or column orders of A matrix
% Usage: B=randomize(A,rowcol)
% rowcol: if =0 or omitted, row order (default)
%         if = 1, column order

rand('state',sum(100*clock))
if nargin == 1,
   rowcol=0;
end
if rowcol==0, 
   [m,n]=size(A);
   p=rand(m,1);
   [p1,I]=sort(p);
   B=A(I,:);
elseif rowcol==1,
   Ap=A';
   [m,n]=size(Ap);
   p=rand(m,1);
   [p1,I]=sort(p);
   B=Ap(I,:)';
end