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After you have clustered data, how can you find out or get a print out of what cluster each point has been assigned to?
For example if I cluster this simple data, how can I find out which cluster each data point belongs to
X = [randn(100,2)+ones(100,2);... randn(100,2)-ones(100,2)]; opts = statset('Display','final'); [idx,ctrs] = kmeans(X,2,... 'Distance','city',... 'Replicates',5,... 'Options',opts); plot(X(idx==1,1),X(idx==1,2),'r.','MarkerSize',12) hold on plot(X(idx==2,1),X(idx==2,2),'b.','MarkerSize',12)
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Isn't it the
variable which you have plotted in different colors?