On 27/09/2007 8:04 PM, Paul Smith wrote: > Dear All, > > 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. Duncan Murdoch ______________________________________________ [email protected] 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.

