%PREX_MATCHLAB   PRTools example on K-MEANS clustering and matching labels%% Illustrates the use of K-MEANS clustering and the match of labels.help prex_matchlabecho on     rand('state',5);   % Set up the random generator (used in K-MEANS)     a = iris;                        % Find clusters in the Iris dataset     J1 = kmeans(a,3);                         % Find about the same clusters, but they are     J2 = kmeans(a,3);                         % labeled differently due to a random initialization.     confmat(J1,J2);                           % Match the labels. 'Best' rotation of label names      [J3,C] = matchlab(J1,J2);                         % since the confusion matrix is now almost diagonal.     confmat(J1,J3);                           % Conversion from J2 to J3: J3 = C(J2,:);     C                 echo off