On Fri, 2006-01-20 at 07:47 +0000, Prof Brian Ripley wrote: > This is related to the incorrect bug report PR#7820. Marc Schwartz > pointed out in > > https://stat.ethz.ch/pipermail/r-devel/2005-April/033016.html > > an example of a real problem. If you call par(mfg=) after par(mfrow) (or > mfcol) and before you have done any plotting, NewPage is not called on the > device at the start of the first page. That causes the DSC comments to be > incorrect on postscript() and much worse on pdf(). > > You would get the same effect by calling par(new=T) before plot.new() is > called, except that is disallowed. par(mfg=) does set new=T internally, > and also sets the plot number to a valid one, both of which inhibit > calling NewPage. I've managed to overcome this by ensuring that > GNewPage always calls NewPage on an unused device (there is an internal > 'state' variable which records the latter). > > This is safe in the sense that the worst it could do is to produce an > unwanted new page. I can't see how this could happen but the design of > the internals of base graphics is very complicated and undocumented, so I > am only putting the change in R-devel (along with fixes to the > long-standing graphics bugs PR#1235 and PR#2630).
Prof. Ripley, Thanks for your follow up on this issue. Your efforts in resolution are greatly appreciated. Best regards, Marc Schwartz ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
