This is a good introduction: Paul Murrell. The grid graphics package. R News, 2(2):14-19, June 2002
Tom ______________________________________________ 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.