the warning appears when using k-means

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Y
Y 2017-10-13
回答： Image Analyst 2017-10-13
Hi, everyone When I learn to use the K-means from demo: train a K-means clustering algorithm. Then I run this demo.
if true
% idx2Region=kmeans(XGrid,3,'MaxIter',1,'Start',C);
end
After I input this sentence, the warning appears as followed.
if true
% fail to converge in 1 iterations
in Kmeans>loopbody at 438
end
Could u give the reason for that and how to solve that ?
Thanks in advance.
Helena

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回答（2 个）

Image Analyst
Image Analyst 2017-10-13
I'd guess that you either don't have very many points in your data, or you don't have any clusters in your data.
KSSV
KSSV 2017-10-13
kmeans displayed a warning stating that the algorithm did not converge, which you should expect since the software only implemented one iteration.
Don't specify the maximum number of iterations..let the code converge itself.....or if you insist on iterations increase the number of iterations.
Read about kmeans algorithm to get more information.

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