Hi, Sorry for bothering your guys. I am still working on boxplot. How can I extend the whisker to the 5% and the 95% quantiles? What I should do if I only want to show the most extreme outlier, like 0.01% and 99.99% percentiles? I saw something on boxplot.stat, but I even donot know how to connect it to boxplot? Thank you very much! suppose the follow is the data to make the boxplot. a <- c(1:100, 800, 900, 1000, -800, -900, -1000) -- View this message in context: http://www.nabble.com/how-to-extend-the-whisker-in-boxplot--tp19540830p19540830.html Sent from the R help mailing list archive at Nabble.com.