[R] Grouped bwplots?

[Fredrik Karlsson]

Dear list,

I am sorry for asking you this, but I am trying to do again what I
thought I have done before, although this time it does not work.

So, given the data set:

> testdf <- data.frame(grfak=sample(c("One","Two"),size=100,replace=TRUE), panfak= sample(c("Yes","No"),size=100,replace=TRUE), xfak= sample(c("Yep","Nope"),size=100,replace=TRUE),  d=rnorm(100))

I would like to do:

> bwplot(d ~ xfak | panfak,data=testdf, groups= grfak)

where the groups argument makes a difference (as in dividing each box
into two by group).
Is this possible to do? If so, what I am doing wrong?


/Fredrik

-- 
"Life is like a trumpet - if you don't put anything into it, you don't
get anything out of it."