R help - Jul 2009 - Background colour of axis

Hi,

I would like to be able to shade the background of part of an axis. To
illustrate, consider the following code:

par(xaxt="n")
x=1:10
y=rnorm(10,0,1)
plot(x,y,type="l",xlab=NA)
mtext(text=LETTERS[1:10], side=1, at=1:10)

How can I make the background behind, say, "G H I" on the x-axis red?
I have
tried using "polygon," but cannot seem to get it to plot outside the
graph
borders.

Any suggestions?

Miguel

	[[alternative HTML version deleted]]

Look at the xpd argument to the par function.

-- 
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 Miguel Lacerda
> Sent: Tuesday, July 21, 2009 8:21 AM
> To: r-help at r-project.org
> Subject: [R] Background colour of axis
> 
> Hi,
> 
> I would like to be able to shade the background of part of an axis. To
> illustrate, consider the following code:
> 
> par(xaxt="n")
> x=1:10
> y=rnorm(10,0,1)
> plot(x,y,type="l",xlab=NA)
> mtext(text=LETTERS[1:10], side=1, at=1:10)
> 
> How can I make the background behind, say, "G H I" on the x-axis
red? I
> have
> tried using "polygon," but cannot seem to get it to plot outside
the
> graph
> borders.
> 
> Any suggestions?
> 
> Miguel
> 
> 	[[alternative HTML version deleted]]
> 
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