This is a commonly asked question and you can likely find many
examples in the r-help archives.
twoord in the plotrix package can do it. Also see example section of:
?plot.zoo in the zoo package looking at the example beginning:
## plot with left and right axes
On Sat, Dec 6, 2008 at 3:54 PM, Ge
Dear Miss R,
I wish to plot three datasets on completely different scales into one
single plot. Until now I use a complicated procedure, converting the data of
the second and third set into coordinates of the first plot and then adding
an extra axis. Is there a way to do this more simply...?
Th
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