Hello, I've created an xyplot and I want to add a loess line for x (Age) <=40
and another for values >40. In a way it is similar to this
https://stat.ethz.ch/pipermail/r-help/2009-May/390502.html but still not
succcessful.
This is my try:
xyplot(MOE~Age|Species, groups=Site,
panel = function(x, y, groups=groups,...) {
panel.xyplot(x, y, groups=groups,...)
panel.loess(x,y,subset = x <= 40, col="black")
panel.loess(x,y,subset = x >40, col="red")
})
When I run the code it "works" but it plots the loess line for all the data,
without subsetting.Any suggestion?
Thank you
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