Error in kmeans of Matlab R2013 ?

Question

Vincent Moron 2013-5-3

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/74531-error-in-kmeans-of-matlab-r2013

评论： Veera 2013-9-27

Hello

I have an unexpected error by running kmeans in the last version of matlab 2013. I tried to cluster a data matrix having 12410 rows and 15 columns (it is actually Principal Component). There are no missing entries in the dataset. When I type >> k=kmeans(PC,2);

I have the following error

Error using randsample (line 106) REPLACE must be either true or false.

Error in kmeans/loopBody (line 357) C = X(randsample(S,n,k),:);

Error in internal.stats.parallel.smartForReduce (line 128) reduce = loopbody(iter, S);

Error in kmeans (line 295) ClusterBest = internal.stats.parallel.smartForReduce(...

I precise that I had not this error on previous version with exactly the same coding

Thanks in advance for any help and suggestion

Vincent

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Answer 1

Ilya 2013-5-3

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/74531-error-in-kmeans-of-matlab-r2013#answer_84335

在 MATLAB Online 中打开

Type

which kmeans
which randsample

to verify that you are using the functions from the official MATLAB installation. If you are, try to reproduce the problem on a smaller set of data and post that set here.

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Vincent Moron 2013-5-3

You were right. I had an old version of randsample stored in my personal directory and it mixes with the new one.

Thanks for the quick reply

Vincent

Veera 2013-9-27

My matlab is using latest kmeans and randsample. There is no problem on small dataset and my data is output of PCA. I am facing this issue on larger dataset. Size of the dataset is around 250,000 vectors (250,000 * 188).

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