Paul Smith wrote: > On 9/28/07, Duncan Murdoch <[EMAIL PROTECTED]> wrote: > >>> Can R plot graphs like the one at >>> >>> http://www.mathwords.com/f/f_assets/floor_graph.gif >>> >>> with the balls at the discontinuity points? >>> >> You can use segments() to draw the segments and symbols() to draw the >> balls. For example, >> >> plot(1,1,type='n', xlim=c(1,10), ylim=c(1,10)) >> segments(1:9, 1:9, 2:10, 1:9) >> symbols(2:10, 1:9, circles=rep(0.1,9), inches=FALSE, bg="white",add=T) >> symbols(1:9, 1:9, circles=rep(0.1,9), inches=FALSE, bg="black",add=T) >> >> This depends on the order of drawing, because the white background of >> the first circles obscures the ends of the segments. >> > > Thanks, Jim and Duncan. It would help to have transparent backgrounds > for the white balls. > Then it's even easier: just use points(), with pch=1, e.g.
plot(1,1,type='n', xlim=c(1,10), ylim=c(1,10)) segments(1:9, 1:9, 2:10, 1:9) points(2:10, 1:9, pch=1, cex=2) points(1:9, 1:9, pch=16, cex=2) > Paul > > ______________________________________________ > R-help@r-project.org 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@r-project.org 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.
