hi,
I try to built elbow code to determine the no. of clusters.I used the same data that used in the following link:
why I'm not get the same figure of elbow code in above link?
x = iris_dataset;x=x'; d=kmeans(x,9); for i=1:10 a=find(d==i); for j=1:length(a) cluster(i,j)=a(j); end end for i=1:9 cluster1{i}=cluster(i,:); var1(i)=var(cluster1{i}); end s=sum(var1)/9; s1=var1/s; y(1:9)=1:9; plot(y,s1)
thanks in advance
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