The solution Felix suggested worked:
It was indeed helpful to include the line par.setttings=list(superpose.symbol=sup.sym) while using.auto key with a customized symbol list in lattice. Thanks Felix! Seth [[alternative HTML version deleted]] ______________________________________________ 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.