Hello, I must be missing something very obvious. I have a dataset with
consists of three groups, and for each group I would like to draw a
regression line in one frame. Something like
plot.a <- xyplot(result~price,data=nl,
xlab="Standardized price",ylab="Outcome",groups=slice,
panel=function(x,y,...){
panel.lmline(x,y,...)
}
)
However, only one line is drawn. If I replace panel.lmline by
panel.densityplot(x,...), I do get three densityplots in the frame. What
am I missing?
Thanks, Ruud
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