You can't. You can set it to white, e.g. par(bg="white").
As far as I can see this has been true since 1.4.0: it certainly seems so
on the only remaining 1.5.1 system I have installed.
On Wed, 30 Oct 2002, Thomas Sudler wrote:
> Hi
>
> Thank you very much for your help. My problem is exactly this one:
>
> "I think he may mean that the visual deletion in snip.rpart.mouse is
not
> working. It only works if the background colour is opaque, which is not
> the default on e.g. x11() in either system."
>
> But now I don't know how to set the background to OPAQUE? Because in R
1.5.1
> I didn't have to do this...
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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