[R] xyplot problem

Pascal A. Niklaus pniklaus at ethz.ch
Tue Sep 23 15:27:47 CEST 2008

Hi all,

I am trying to produce some panels with dots in an X/Y plane where the 
diameter of the dots indicates a Z value (like e.g. earthquake maps where dot 
sizes indicate magnitudes and X/Y the location).

This works fine with xyplot, e.g.:


However, when I do this with a panel variable, e.g.:

y <- rep(1:3,5)
sz <- rep(1:5,each=3)
grp <- factor(rep(1:5,each=3))
xyplot(y~x | grp , cex=sz)

then sz in the cex argument is not applied per group as I would expect. Same 
for other arguments like col.

Is this really the intended behaviour? 

How can I achieve what I want, i.e., that the cex argument is different for 
the different levels of grp?

Thank you for your help

Pascal Niklaus

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