Re: [R] erasing a polygon

herneau On 09/27/2012 08:48 AM, PIKAL Petr wrote: Hi It seems that it still works. x<-c(3,7,7,3) y<-c(4,4,6,6) par(bg="pink") plot(1:10,1:10) polygon(x, y, border=TRUE, col=0) Sent: Thursday, September 27, 2012 2:37 PM To: r-help@r-project.org Subject: [R] erasing a polygo

Re: [R] erasing a polygon

@r- > project.org] On Behalf Of Terry Therneau > Sent: Thursday, September 27, 2012 2:37 PM > To: r-help@r-project.org > Subject: [R] erasing a polygon > > I'm updating some (very) old code, and one particular option of its > plot method depends on a once-was-true trick >

[R] erasing a polygon

I'm updating some (very) old code, and one particular option of its plot method depends on a once-was-true trick polygon(x, y, border=TRUE, col=0) polygon(x, y, border=TRUE, density=0) would draw the polygon AND erase whatever was underneath it back to background color. Is there a reli