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stcolor
2007 Jul 17
2
xyplot for longitudinal data
Dear R-help subscribers,
I use xyplot to plot longitudinal data as follows:
score<-runif(100,-4,5)
group<-sample(1:4,100,rep=T)
subject<-rep(1:25,4)
age<-rep(runif(4,1,40),25)
df<-data.frame(score,group,age,subject)
xyplot(score~age|group, group=subject,
panel=function(...){
panel.loess(...,lwd=4)
panel.superpose(...)}
,data=df)
this produced a plot with four panels one for each