R help - Nov 2003 - graphics reset

Hello,

Is there a specific command to clear the graphics window. On occasion I
need to construct plots using commands that don't clear the graphics
window (like text, lines and points etc.) -only- and hence need to clear
the graphics completely before hand. 

also, is there a way to restore the graphics parameters to default
values, say in these cases where you forgot to save the original values
and want to restore the graphics to some sane state after a long R
session.

many thanks


-- 
Murad Nayal M.D. Ph.D.
Department of Biochemistry and Molecular Biophysics
College of Physicians and Surgeons of Columbia University
630 West 168th Street. New York, NY 10032
Tel: 212-305-6884	Fax: 212-305-6926

On Sun, 16 Nov 2003 17:19:29 -0500, you wrote:
>
>
>Hello,
>
>Is there a specific command to clear the graphics window. On occasion I
>need to construct plots using commands that don't clear the graphics
>window (like text, lines and points etc.) -only- and hence need to clear
>the graphics completely before hand. 
frame() or plot.new() will move to the next frame.  By default,
there's only one frame, but calls like par(mfrow=c(2,2)) set up more
frames on a single page.
>also, is there a way to restore the graphics parameters to default
>values, say in these cases where you forgot to save the original values
>and want to restore the graphics to some sane state after a long R
>session.
The easiest way is to use dev.off() to close the graphics window and
then start plotting to open a fresh new one, with default settings.

Duncan Murdoch