Hi all, I had meant to make this announcement earlier but had forgotten (a recent bug report reminded me).
The version of lattice that ships with R 2.13.0 has a fairly serious bug in panel.abline (which would neglect to draw many negative slope lines). If you use lattice with R 2.13.0, you should update to the latest version of lattice (0.19-26 or better). -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.