[R] plot bg color in Mac OSX

[Deepayan Sarkar]

On 12/2/05, Peter Rich <pjrich at gmail.com> wrote:
> Hi,
>     I am running R on my iBook (OS X 10.4) and whenever I try and plot a
> model that has been run, I get a grey background.  This makes the plot
> difficult to read on b&w printouts.  I have tried changing the background
> to
> white (or any other color) without any success.  Here's a current example
>
> plot(augPred(m2corn.nlme, level=0:1), bg="transparent", lty=c(1,4), pch=19,
> cex=.75,new=TRUE)
> plot(augPred(m3corn.nlme, level=0:1), lty=c(1,4), pch=19, new=TRUE)
>
> Notice that if I run this code at the same time, there are some par
> arguments that work as I would expect and others that seem to have no
> effect.  For example, bg="transparent" and new=TRUE both seem to be
> ignored.  This is annoying because teh grey background makes light colors
> difficult to see. Additionally, I would like new=TRUE to work so that I can
> actually create these two plots at the same time.  Any ideas on how to get
> this to work?

Most nlme plots are Trellis plots (using the lattice package), where
traditional graphics rules don't apply. You need to read up on
lattice. ?lattice would be a good start.

-Deepayan