[R] Related with "kmeans"

[Liaw, Andy]

> From: msck9 at mizzou.edu
> 
> 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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