Dear R gurus, A re-post due to suggestions from moderators..... Thanks to tips from Gabor and Felix, I was able to make some progress.. How do I control the position of panel.text? I would like the text appear at a specific position (say, top right corner) inside a panel. Below is the sample code... d=data.frame(x=rep(sample(1:5,rep=F),10),y=rnorm(50),z=rep(sample(LETTERS[1:2],rep=F),25)) xyplot(y ~ x, data = d, groups = z,subscripts=T, panel = panel.superpose, panel.groups = function(x=x,y=y,subscriptssubscripts,..., group.number) { require(grid) panel.xyplot(x=x,y=y,subscripts=subscripts,...) span <- switch(group.number, 2/3, 1/4, 1/2) panel.loess(x=x,y=y,subscripts=subscripts,..., span = span) panel.text(x=max(x),y=max(y),lab=paste(round(cor(x,y),2)),col=trellis.par.get("superpose.symbol")$col[group.number]) }, auto.key = list(lines = TRUE,space="right")) Thanks a TON!! Santosh [[alternative HTML version deleted]]