[R] Impaired boxplot functionality - mean instead of median

[Evgeniy Kachalin]

Wiener, Matthew │п│и│ш│е│т:
> interaction(A, B) will create a single factor made up of the combinations of
> the two factors A and B.  Perhaps that would let you use plotmeans.
> 
> Hope this helps,
> 
> Matt Wiener

So you think plotmeans(num~interaction(A,B)) will work? How? There is NO
'num' data for a.d, a.e, a.f etc.