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    %% Construct a Gaussian Mixture Distribution
% Create a |gmdistribution| distribution defining a two-component mixture
% of bivariate Gaussian distributions.

% Copyright 2015 The MathWorks, Inc.

mu = [1 2;-3 -5];
sigma = cat(3,[2 0;0 .5],[1 0;0 1]);
p = ones(1,2)/2;
obj = gmdistribution(mu,sigma,p);

ezsurf(@(x,y)pdf(obj,[x y]),[-10 10],[-10 10])