[R] Related with kmeans

2005-01-24 Thread msck9 
Hi, 
 I am new here. 
 I used y-kmeans(x, 2)(x is a vector) to do the cluster analysis. I get 
 y has $cluster, $center etc. I need to pull out the data belong to
 cluster 1 and cluster 2. How can I do that? 

 Thanks,
 Ming

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RE: [R] Related with kmeans

2005-01-24 Thread Liaw, Andy 
 From: [EMAIL PROTECTED]
 
 Hi, 
  I am new here. 
  I used y-kmeans(x, 2)(x is a vector) to do the cluster 
 analysis. I get 
  y has $cluster, $center etc. I need to pull out the data belong to
  cluster 1 and cluster 2. How can I do that? 

Here's an example:

 cl - round(runif(20))
 x - rnorm(20, mean=cl)
 km - kmeans(x, 2)
 x[km$cluster == 1]
 [1] -1.739624361 -0.046792299 -0.309680321  0.001928340 -1.036573237
-1.875550649
 [7] -2.276369358 -0.453359967 -1.500753548 -1.864152516
 x[km$cluster == 2]
 [1] 0.6467709 1.9746519 1.9463621 2.9971197 2.8290800 0.8533460 0.6175901
2.2296458
 [9] 0.6616395 1.5822679

Andy
 
  Thanks,
  Ming
 
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