MATLAB: How to plot a gaussian mixed model with 1D data

gaussian mixed model

Hi I am a novice in Matlab. I have to plot a gaussian mixed model with one dimensional data. So far i have been able to do only this: data = xlsread('csf.xlsx','ab'); mu1 = mean('data'); sigma1 = std('data'); X = [mvnrnd(mu1,sigma1,1000)]; gm = fitgmdist(X,2); What do i do next? Thanks a lot.

Best Answer

if true
  data = xlsread('csf.xlsx','ab'); % your data
  mu1 = mean('data'); % mean 
  sigma1 = std('data'); % standard deviation
  X = [mvnrnd(mu1,sigma1,1000)]; % generate equal number of random variables
  gm = fitgmdist(X,2); %Gaussian mixture distribution with 2 components
  scatter(X(:,1),X(:,2),10,'.')  % plot X
  hold on
  ezcontour(@(x,y)pdf(gm,[x y]),[-8 6],[-8 6])
end
From the plot You can visualize the fitted model gm by using pdf and ezcontour of your data.
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