You should provide raw data to boxplot(), not summary stats. If you want to input summary stats, there was a post some time ago on that: http://finzi.psych.upenn.edu/Rhelp10/2010-September/251674.html <\quoate>
Overwriting $stats did the job for me. I wanted to show the effect of using different quantile computation methods. Thanks a lot to everybody for the quick answers! Tom -- View this message in context: http://r.789695.n4.nabble.com/Boxplot-has-only-one-whisker-tp2993262p2994962.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.