[R] png plots

[Allin Cottrell]

On Wed, 12 Mar 2003 ripley at stats.ox.ac.uk wrote:

> And your platform is?  There are two different png devices in R.
>
> On Wed, 12 Mar 2003, Allin Cottrell wrote:
>
> > I saw in the archive a post from Mark Wilkinson (Feb 1, 2003), saying
> > that some of his R-generated png plots came out overlapping.
> >
> > I am seeing the same thing (with R 1.6.2 on Linux i686).  My input
> > file generated 4 plot files.  The first two were fine, but the last 2
> > featured a weird overlay of the remaining graphs.  The problem is not
> > seen with postscript of pdf output.

How do you tell which png device is used?  help(png) and help(Devices)
don't mention anything about multiple png drivers.  R_X11.so is linked
against libpng.so.3 if that's any help.

Allin Cottrell