Re: [R] How to make labels on my dendrogam look more clear and visible

From: jon butchar <butchar.2_at_osu.edu>
Date: Fri 28 Oct 2005 - 10:02:18 EST

On Thu, 27 Oct 2005 16:08:48 -0700 (PDT) Srinivas Iyyer <srini_iyyer_bio@yahoo.com> wrote:

> Dear group,
> I have a matrix with readings for ~180 variables
> observed in 240 conditions.
>
> I am doing a hierarchical clustering method (hclust)
> by calculating eucledian distances among them.
>
> When I plot the dendrogram from hclust, all my
> variables at the end of the branches are cluttered. I
> cannot read them properly.
>
> I tried using :
> > x11(width = 100, height = 70, pointsize = 10)
> >plot(mydat.hcluster)
>
>
> and also by
>
> >x11(width = 1000, height = 300, pointsize = 10)
> >plot(mydat.hcluster)
>
> I could not make the dendrogram branches go wide and
> make variables at the end of braches more legible.
>
>
> Can any one please help me to make a good diagram so
> that I can see the lables at the end of branches more
> clearly.
>
> Thank you.
>
> cheers
> Sri
>

I don't know if it'll help, but I've grown fond of postscript graphs.

For example...

> postscript("mydendogram.ps", height=800, width=2000, pointsize=[????])
> plot(mydendogram)
> dev.off()

gives me very clear print, and then the ps2pdf app can turn it into a pdf for e-mailing or import to a presentation.

jon b



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