www.pudn.com > image_mva_0.rar > ChooseInitialCentres.m

function [C,perm]=ChooseInitialCentres(set,k) 
%CHOOSEINITIALCENTRES Randomly picks sample points 
% Centres=CHOOSEINITIALCENTRES(Data,k) where Data is 
% the data matrix, and k is the number of points required. 
% Used to initialise various clustering routines. 
% 
%(C) David Corney (2000)   		D.Corney@cs.ucl.ac.uk 
 
perm = randperm(size(set,1)); 
perm = perm(1:k); 
C = set(perm,:);