Try setting something like cex=0.5 in the plot. It works for at least
hclust. Here is a quick example using hclust to show how you can get
away with set the colours.
data(USArrests)
hc - hclust(dist(USArrests), ave)
plot(hc, hang=-1, cex=0.5)
labels - rownames(USArrests)[ hc$order]; n - length(labels)
mtext(labels, side=1, at=1:n, las=2, col=1:n, cex=0.5, line=0)
If you want to get rid of the double labelling (which is useful for
checking), then set labels=FALSE in the plot().
The trick now becomes how to generalise this to other dendrogram and
when hang=-1 is not the case.
My initial though was to look into plot.hclust to see how the coordinate
for label placement was calculated and replace it with text(...,
col=col.label). But it appears that this is done with a .Internal
function and I have not learned how to read/edit this yet.
On Wed, 2004-09-08 at 11:06, Marta Rufino wrote:
Dear R-users,
I would like to change the labels size and format in the node ends of a dendrogram,
how can I do it?
How can I use different symbols/colors in each node ends ?
I manage to do it with plot.cluster, but heat map uses plot.dendrogram.
Can anyone help me please?
thank you
Marta
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