[R] no labels when plotting dendrograms

[David Marimont]

I'd like to be able to cut dendrograms at a height I specify
and then plot the resulting subtrees.  I wanted to use the
dendrogram object for this purpose because there doesn't seem
to be a canned way to cut a hclust object and get a list of
hclust objects, but there is a function (cut) that does that
for dendrograms.  The problem I'm having is that when I plot
a dendrogram, I can't figure out how to add labels to the nodes.
For example, this example from the dendrogram documentation
plots a dendrogram without labels:

     library(mva)
     data(USArrests)
     hc <- hclust(dist(USArrests), "ave")
     str(dend1 <- as.dendrogram(hc))
     plot(dend1)
     dend2 <- cut(dend1, h=70)
     plot(dend2$upper)
     plot(dend2$lower[[3]])

So... does anyone know how to cut an hclust object and get a
list of hclust objects, or how to plot a dendrogram object with
labels?  Thanks.

   David Marimont
   NXP Data Analysis, Inc.
   http://www.nxpdata.com


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