HI R-listers, Thanks for the replies I am convinced of Q 1 and 2.
Q 3 - I am still unsuccessful. Aeventexhumed has three events A, B and C. I am unable to make 3 windows of scatterplot graphs side by side showing the difference in regression of each event. With and without lattice I have tried, but the only graph that is produced is one graph with all three events (A, B, and C) plotted in one window (R script below). I want to show the 3 Aeventexhumed events separately in 3 plots next to each other in one window. Previously, I have been able to make this is trellis.par.set with boxplots. >library(car) > library(lattice) > trellis.par.set(col.whitebg()) > par(mfrow=c(1,3)) > scatterplot(HSuccess~Veg|Aeventexhumed, + data = data.to.analyze, + xlab ="Distance to vegetation border", + ylab = "Hatching success (%)") Please advise, Jean -- View this message in context: http://r.789695.n4.nabble.com/Q-scatterplot-plot-function-trellis-linear-regressions-tp4630562p4630686.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.