What is the way to add an arbitrary fit from a model to a lattice conditioning
plot ?
For example
xyplot(v1 ~v2 | v3,data=mydata,
panel=function(...){
panel.xyplot(...)
panel.loess(...,col.line="red")
}
)
Will add a loess smoother. Instead, I want to put a fit from lm (but not a
simple straight line) and the fit has to be done for each panel separately, not
one fit for the full data set, so sth like an lm equivalent of panel.locfit
(there is no panel.lmfit)
Thank you.
Stephen B
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