Jacob,

Try increasing the size of the pdf.  For example, I can read all 919 
labels in this plot ...

pdf(width=200, height=200)
plot(1:919, 1:919, axes=FALSE)
axis(1)
axis(2, at=1:919, las=1, cex=0.01)
box()
graphics.off()

Jean



JIMonroe <jim5bm@virginia.edu> wrote on 10/01/2012 03:42:24 PM:
> 
> Hello,
> I have a large (919 X 919), hierarchically clustered heatmap that I 
would
> like to read the labels off of.  I have tried saving the figure in pdf
> format and enlarging it until I can see the labels, but if I make the 
labels
> small enough to read (so that they don't overlap) using cexRow and 
cexCol,
> they do not appear in the pdf.  The limit seems to be anything below 
cexRow
> or Col = 0.06.  Is there a way to have smaller labels visible in the 
pdf? 
> Is this an issue with resolution?  I could get by with just a quarter of 
the
> heatmap (i.e. half of a row and half of a column) so that the labels 
don't
> have to be so small, but the heatmap must be clustered before this is 
done. 
> I tried to cut the dendrogram at just the halfway point of the heatmap, 
but
> was not successful.  Any suggestions?
> Thanks,
> Jacob

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