Duncan Murdoch <[EMAIL PROTECTED]> escribió: > See ?boxplot.stats. It can't handle a formula argument, it wants a > numeric vector.
Thanks, had read it three times ... I'll try to use my brain next time! So that sparks another question: if boxplot.stats cannot handle formulas, how does it provide the data to boxplot? (or else ... where can I read that up?) Cheers, Hugo ______________________________________________ R-help@stat.math.ethz.ch 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.