introduction with k-means in matlab

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tusu
tusu on 29 Aug 2014
Edited: the cyclist on 29 Aug 2014
Hi,
I just theoretically read k-means and did an example..
I had 4, 2d items with their coordinates value, and initially k=2
like
  • item variables
  • A (5,3)
  • B (-1,1)
  • C (1,-2)
  • D (-3,-2)
I calculated their centroids and then by measuring euclidean dist among arbitrary cluster and centroids, after calculation I got two cluster (A) and (B,C,D)
I am looking at matlab and found kmeans function but how I could implement the following example in matlab, I got messed up..
any hints for first time concept to implement kmeans using matlab using the following example.
  1 Comment
the cyclist
the cyclist on 29 Aug 2014
Do you mean that you have done it by hand, and you are not sure how to do the same thing with MATLAB?

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Accepted Answer

the cyclist
the cyclist on 29 Aug 2014
Edited: the cyclist on 29 Aug 2014
Is this what you want?
The output does show the two clusters you mention.
X = [ 5 3;
-1 1;
1 -2;
-3 -2];
clusterNumber = kmeans(X,2)

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