http://cran.r-project.org/web/packages/diagram/vignettes/diagram.pdf It might be difficult to include very large amounts of data, but names and counts should be fine. -- View this message in context: http://r.789695.n4.nabble.com/How-to-make-flowchart-in-R-tp2327246p2327273.html Sent from the R help mailing list archive at Nabble.com.