[R] Extract variance from dist(cluster.data)

Philip Silva p.silva at gmx.de
Thu Dec 17 10:00:37 CET 2009


Hi!

I am currently clustering data that is read out of a csv file. The code is:

file <- read.table("/tmp/cluster_input.tmp")
cluster.data <- as.matrix(file[,2:39040])
cluster.dist <- dist(cluster.data)
cluster.hclust <- hclust(cluster.dist)
cluster.hcut <- cutree(cluster.hclust,10) # 10 == number of clusters!
write.table(cluster.hcut, "/tmp/cluster_result.csv")

Now I would like to know the Variance of each cluster in hcut. Is it correct that the variances are already encoded in dist(cluster.data)? How can I get it?

Thanks a lot in advance.

Best regards
Philip Silva
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