Hi, In R, how does one make a plot plot(x,y) where x and y are either continuous or discrete but you want to plot point (and lines) separately on the same graph for a third variable, I guess factor, z? In SAS this could be done by doing: plot x*y = z; Any help out there. Also, what are R's capabilities for producing 'control charts' and 'pareto charts'. I haven't really worked with them before so I don't know what it entails. Thanks, steve __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._