[R] legend in lattice densityplot

Chuck Cleland ccleland at optonline.net
Wed Nov 29 18:18:45 CET 2006


Albert Vilella wrote:
> Hi,
> 
> I have a densityplot like this:
> 
> x = c(rnorm(100,1,2),rnorm(100,2,4),rnorm(100,3,6))
> f = sample(c("A","B","C","D","E"),300,replace=TRUE)
> df=data.frame(x,f)
> library(lattice)
> attach(df)
> densityplot(~x, groups=f)
> 
> And I want to add a legend with the colours for the factors. How can I do that?
> How can I not have the dots of the distribution at the bottom, or at
> least, make them occupy less vertical space?

  Change the last line to the following:

densityplot(~x, groups=f, plot.points=FALSE, auto.key=TRUE)

See ?panel.densityplot .

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Chuck Cleland, Ph.D.
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