[R] using boxplot.stats

[Hugo M.Fernandez Bellon]

Duncan Murdoch <murdoch at stats.uwo.ca> 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