I would not have called such an axis "logarithmic" since the logarithm
function is bounded below at 0, but I think that what you seek will be
found among the examples that accompany Sarkar's book, chapter 8,
figures 8.3 - 8.5:
http://lmdvr.r-forge.r-project.org/figures/figures.html
On Jun 10, 2009, at 12:05 PM, John Wiedenhoeft wrote:
Hi,
I have two curves that are best displayed using a logarithmic y-
axis. I want
to plot the difference of these curves, which means I would need a
log scaling
on both the negative and the positive side (i.e. the y-axis should
be -100 -10
-1 0 1 10 100). Zero values should not be discarded.
Is there an easy way to do that?
Thanks,
John
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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