introduction with k-means in matlab

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tusu
tusu 2014-8-29
编辑： the cyclist 2014-8-29
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.
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the cyclist
the cyclist 2014-8-29
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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the cyclist
the cyclist 2014-8-29
编辑：the cyclist 2014-8-29
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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