Hi, Try this,
## create a 2D grid with random point sizes d = expand.grid(x=1:10,y=1:10) d$size = runif(nrow(d), 1,5) ## create some random links links= d[sample(seq(1,nrow(d)),20),] links$id = sample(2:6, nrow(links),repl=T) ## plot library(ggplot2) ggplot(d, mapping=aes(x,y)) + geom_point(aes(size=size)) + geom_line(data=links,aes(colour=id,group=id)) HTH, baptiste On 18 June 2010 03:32, Rex C. Eastbourne <rex.eastbou...@gmail.com> wrote: > I would like to draw a set of points that are equally spaced in a 2-D > grid. Then I would like to draw lines that illustrate different > directed paths through subsets of points. Imagine that the points > correspond to booths in a conference center, and I want to show the > various paths people took to visit the booths (using color to > highlight different types of paths). An example path might be: [(1,1), > (1,3), (3, 3)]. > > Note: I would like to also make the size of the points in the grid > variable (they correspond to the sizes of the booth). > > Can anyone suggest a way to do this in R? (Or to suggest another > software package.) > > Thanks, > Rex > > ______________________________________________ > 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.