Colorbar is opposite of scatterplot
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So I copied all of the steps found on the following documentation page: https://www.mathworks.com/help/stats/gmdistribution.mahal.html
but for some reason my graph is showing the color yellow at the top but the scatter plot shows it closest the origin. From the Documentation it looks like the graph should match the colorbar values and vice-versa. anyone know what Iam doing wrong? I have tried multiple different solutions such as colormap(flipud(hot)) with no success
r1 = mvnrnd(mu1,Cov1,1000);
r2 = mvnrnd(mu2,Cov2,1000);
X = [r1; r2];
gm = fitgmdist(X,2);
d2 = mahal(gm,X);
scatter(X(:,1),X(:,2),10,d2(:,1),'.')
c = colorbar;
ylabel(c,'Graph')
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the cyclist
2023-5-6
0 个投票
It is more difficult to debug your result, when you have not given us the full code that generates your figure.
But, I see no problem here. Note that your code (like the example in the documentation), is displaying the Mahalanobis distance of each point from Cluster 1.
In your figure, Cluster 1 must be the cluster that is in the upper-right part of the figure (where all the points are the purplish color). The points you have put the red box around are the ones with the greatest distance from the center of that cluster.
I see no inconsistency in your results.
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