Hi,
A simple question I hope. I wish to add a single vertical line to a plot
with several density plots.
Here is a simplified example.
############
thedata <- data.frame(x1=rnorm(100,1,1),x2=rnorm(100,3,1)) #create data
thedata.m<-melt(thedata)
densityplot(~value, thedata.m, groups=variable,auto.key=list(columns=2))
#this gives the two density plots
#########
what I wish now is to add a vertical line, for example v=2.
Many thanks,
Josh.
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