On 3/07/2009, at 11:29 AM, Hongwei Dong wrote:
Hi, I'm trying to plot two variables in one graph. One ranges
between 0 and
1, while the other ranges between 50 and 500. Can I plot them in
one graph
with similar scale?
Yes you can, but DON'T!!! Such graphs are terribly misleading and
confusing.
But if you insist --- and be it on your own head --- see
http://wiki.r-project.org/rwiki/doku.php?id=tips:graphics-base:2yaxes
Don't say I didn't warn you!
cheers,
Rolf Turner
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