Hi
I know this is a basic question and I know I have done it before but I
can't find the answer any more.
I have a data set, say:
F1, F2, Value
F1 and F2 are Factors.
I would like to plot
plot(TheCombinationOf(F1, F2), Value)
I remember there was a function for TheCombinationOf() but I don't
remember the name.
I could create a new factor based on F1 and F2, but I would prefer the
other soluytion.
Any help welcome,
Rainer
--
Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation
Biology (UCT)
Department of Conservation Ecology and Entomology
University of Stellenbosch
Matieland 7602
South Africa
Tel: +27 - (0)72 808 2975 (w)
Fax: +27 - (0)21 808 3304
Cell: +27 - (0)83 9479 042
email: [EMAIL PROTECTED]
[EMAIL PROTECTED]
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