[R] combining bar and line plots with multiple axes

[Greg Snow]

The updateusr function in the TeachingDemos package can be used to change the user coordinates of the current plot and may do what you want.

--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Schreiber, Stefan
> Sent: Thursday, October 02, 2008 10:04 AM
> To: r-help at r-project.org
> Subject: [R] combining bar and line plots with multiple axes
>
> Hey list,
>
> I have a barplot with a line plot overlayed (on the 2nd  y axis) and it
> looks fine except that the origin (0) on the 2nd  y axis (side=4) is
> not
> lining up with the origin on the 1st y-axis (side=2, from the barplot).
> Is there a way to either shift the 2nd y-axis (line plot) down or
> readjust the barplot axis?
>
> Just as a reference, here is the code:
>
> barplot2(temp$precip, names.arg=temp$year, ylim=c(0,300),axes=F)
> axis(2)
> par(new=T)
> plot(temp$year, temp$mat, axes=F, type="l", ylim=(0,25))
> axis(4)
>
>
> Thanks!!
>
> Stefan
>
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>
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