The reason I explicitly specified in the problem that the rectangle should not be drawn first is that the xyplot is issued as part of a larger routine that I don't want to modify.
On 7/29/06, Sebastian P. Luque <[EMAIL PROTECTED]> wrote: > Hi Gabor, > > > On Sat, 29 Jul 2006 17:20:29 -0400, > "Gabor Grothendieck" <[EMAIL PROTECTED]> wrote: > > > I am trying to create a lattice plot and would like to later, i.e. after > > the plot is drawn, add a grey rectangle behind a portion of it. The > > following works except that the rectrangle is on top of and obscures a > > portion of the chart. I also tried adding col = "transparent" to the > > gpar list but that did not help -- I am on windows and perhaps the > > windows device does not support transparency? At any rate, how can I > > place the rectangle behind the plotted points without drawing the > > rectangle first? > > If you only need to draw the rectangle behind the points, why not > 'panel.polygon' before 'panel.xyplot'? > > > xyplot(x ~ x | gl(2, 1), layout=1:2, > panel=function(x, y, ...) { > panel.polygon(c(3, 3, 8, 8), c(0, 12, 12, 0), col=2) > panel.xyplot(x, y, ...) > }) > > > Cheers, > > -- > Seb > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.