Suppose that (e.g.) xyplot() returns an object "xxx" with (say) 3 pages. I would like to extract/plot (print) just one of these pages, e.g. page 2.

Here's a toy example: x <- rep(seq(0,1,length=11),12) set.seed(42) y <- rnorm(3*44) a <- rep(letters[1:12],each=11) dta <- data.frame(x=x,y=y,a=a) xxx <- xyplot(y~x|a,data=dta,layout=c(2,2)) I would to extract from xxx and print page 2 (the page corresponding to levels e, f, g and h). Is there any (simple) way that I can do this?

`I've mucked around with update.trellis() and [.trellis, but I cannot`

`make head nor tail of the documentation. The [.trellis method seems to`

`work in some situations, but not in others, and since I cannot`

`understand what it actually does, I cannot figure out why.`

`E.g. in my toy example "xxx[5:8]" seems to give me what I want, but in`

`the context of my real application a similar construction does not work.`

Thanks for any insight. cheers, Rolf Turner -- Technical Editor ANZJS Department of Statistics University of Auckland Phone: +64-9-373-7599 ext. 88276 ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.