plotgauss.m

Matlab源代码

function plotgauss(c,n,k)
%  Function to simulate data from a Gaussian density in d dimensions
%  and to plot the data in the first 2 dimensions
%  input   c: structure saving the mean and covarience
%          n: size of data set
%          k: the number of classes

color = ['g'; 'r'; 'b'; 'm';'c';'y'];
marker = ['o','x','*','+','s','d'];
figure;
for i = 1:k
    data = mvnrnd(c(i).mu,c(i).covar,n);
    scatter(data(:,1),data(:,2),color(i),'Marker',marker(i));
    hold on
end
hold off

% axis([-6 6 -6 6]);  % fix the lengths of the axes
xlabel('Dimension 1');
ylabel('Dimension 2');
title('Simulation of k classes Gaussian data in two dimensions');