On Mon, Dec 6, 2010 at 6:22 PM, Maarten van Iterson <m.van_iterson...@lumc.nl> wrote: > Thanks Chris Campbell, > > I didn't though about that. > > Cheers, > Maarten > > On Mon, 2010-12-06 at 10:08 +0000, Chris Campbell wrote: >> data$subjectID <- paste(data$groups, data$subjects) # create a >> character >> label >> >> xyplot(responses~time|subjectID, groups = groups, data = data, >> aspect="xy")
Another option is xyplot(responses~time | groups:subjects, data = data, aspect="xy") -Deepayan ______________________________________________ R-help@r-project.org mailing list 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.