On Feb 5, 2014, at 4:17 AM, S Ellison wrote: >> I am having some difficulties with effects plots from the effects package. > Your problem is probably not xlim, which the effects plots should accept; > it's more likely that you're trying to use base graphics to add symbols to a > lattice plot - effects uses lattice, not base graphics. The coordinate > systems don't mix. > > Try googling 'adding points to lattice plots' or similar - but be prepared > for some intricate answers.
That effort may be advanced by looking at: library(lattice) ?trellis.focus ?lpoints .... and working through the examples on those pages. -- David Winsemius Alameda, CA, USA ______________________________________________ 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.