solve q1
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1 changed files with 6 additions and 2 deletions
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@ -2,6 +2,10 @@
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% Rui Kuang
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% Demonstration of Classification by 2-D Gaussians
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clf;
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prior1 = 0.3;
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prior2 = 0.7;
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mu1 = [-1 -1];
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mu2 = [1 1];
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@ -27,13 +31,13 @@ mu2 = [1 1];
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[X1,X2] = meshgrid(x1,x2);
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%pdf1
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F1 = mvnpdf([X1(:) X2(:)],mu1,Sigma1);
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F1 = reshape(F1,length(x2),length(x1));
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F1 = reshape(prior1 * F1,length(x2),length(x1));
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subplot(1,2,1);
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surf(x1,x2,F1); hold on;
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%pdf2
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F2 = mvnpdf([X1(:) X2(:)],mu2,Sigma2);
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F2 = reshape(F2,length(x2),length(x1));
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F2 = reshape(prior2 * F2,length(x2),length(x1));
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surf(x1,x2,F2);
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caxis([min(F2(:))-.5*range(F2(:)),max(F2(:))]);
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axis([-4 4 -4 4 0 .4])
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