[R] Combining factors

Rainer M Krug RKrug at sun.ac.za
Fri Nov 10 13:13:04 CET 2006


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 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:	RKrug at sun.ac.za
       	Rainer at krugs.de

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