[R] Newbie: Measuring distance between clusters.

[Bill.Venables at csiro.au]

One way to do it is to find the distances between ther "centers" (=
centres in English) of the clusters.  

dist(kc$centers)

It rather depends on how you define distances between clusters, though.
There are many possibilities.

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Keizer_71
Sent: Saturday, 23 February 2008 7:40 PM
To: r-help at r-project.org
Subject: [R] Newbie: Measuring distance between clusters.


Hi,

I had 10000 genes, and I clustered them using K-means clustering in R.

kc<-kmeans(data.sub,7)

kc
n cluster sum of squares by cluster:
[1]  60631.76 135886.19 159049.71 101783.27  90040.72 183335.60
158867.81

Available components:
[1] "cluster"  "centers"  "withinss" "size"

I am very new to R. How do i measure the distance between those cluster?

I tried

I am trying to do a complete linkage

>z<-hclust(kc,method="complete")

Error in if (n < 2) stop("must have n >= 2 objects to cluster") : 
        argument is of length zero

thanks.

  
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