R help - Jul 2001 - Secondary y-axis

Dear R Users,

I have been trying to add a  secondary y-axis to an existing plot. I thought
this could be a trivial matter and have checked the Manual and Mailing List
Archive to see If I can find a solution.

It appears the suggested method by Uwe Ligges (fot from the Archive) did not
work. I am getting an error message saying the  "Error in plot.new() : axis
style "d" unimplemented". Does any one has simple a fix to this
problem.

Shiham


> I want to combine two plots. On the one hand i've got a histogram and
on
the other hand a line plot. The y axis of the plot are different and i want
both axis (one on the right side the >other on the left side) in the plot.
How can I do this in R ?


I would try something like:


hist(....., xlim=c(.....))
par(new=TRUE)
plot(....., xaxt="n", yaxt="n", xlim=c(.....))
axis(4)

Uwe Ligges

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"M. Shiham Adam" wrote:
> 
> Dear R Users,
> 
> I have been trying to add a  secondary y-axis to an existing plot. I
thought
> this could be a trivial matter and have checked the Manual and Mailing List
> Archive to see If I can find a solution.
> 
> It appears the suggested method by Uwe Ligges (fot from the Archive) did
not
> work. I am getting an error message saying the  "Error in plot.new() :
axis
> style "d" unimplemented". Does any one has simple a fix to
this problem.

The following example (and also the one of my old mail) works for me:

 x <- rnorm(100)
 hist(x)
 par(new = TRUE)
 plot(-2:2, 1:5, xaxt = "n", yaxt = "n", xlab="",
ylab="")
 axis(4)

If you want two times the identically scaled y-axis to an existing plot,
just use

 plot(...)
 axis(4)


If this doesn't help, please tell us:

 - the code you used exactly
 - version of R
 - OS


Uwe Ligges
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Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at
stat.math.ethz.ch
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