Why do I get this message : Error using kmeans ---X must have more rows than the number of clusters.

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Andree-Sylvie Carbonneau
回答： Laura Hensel 2020-2-29
Hello,
When I run a collegue script, i get this error message: Error using kmeans ---X must have more rows than the number of clusters. What are my option to solve this problem?
Thank you.
Andree

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采纳的回答

Kelly Kearney
Kelly Kearney 2014-1-15
How many data points do you have? And how many clusters are you attempting to create? You can't group 4 points into 5 clusters, for example.

更多回答（3 个）

Andree-Sylvie Carbonneau
This is the code:
ab = IM1;
nrows = size(ab,1);
ncols = size(ab,2);
ab = reshape(ab,nrows*ncols,1);
nColors = 3;
[cluster_idx cluster_center] = kmeans(ab,nColors,'distance','sqEuclidean',...
'Replicates',nColors + 1,'display','iter');
clear ab nColors
Thulfiqar Hussein
Thulfiqar Hussein 2017-3-22
the value (X/K) should be integer number without fractions. for example if you have 10 objects and cluster them to 3 groups you will get 10/3 = 3.3 and this error will pop up, but if you cluster them to 2 or 5 groups there will be no problem.
Laura Hensel
Laura Hensel 2020-2-29
You should also check if you have any missing values in your matrix

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