I've shared a document with you: plot.png http://docs.google.com/leaf?id=0B_J5_yv8GrERYWRhZjU4NDItMmMyOS00ZGIxLWE2ZDUtMDFiYTY3MzliMzhk&hl=en&invite=CI2a3aYC
It's not an attachment -- it's stored online at Google Docs. To open this document, just click the link above. [[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.