> I try to add three different lines (solid, short dash, long dash) > in to current barplot.
Have a look at the lty parameter. It's documented in ?par. If I understand your question correctly, you may also be interested in segments() to actually draw the lines (or maybe abline()). cu Philipp -- Dr. Philipp Pagel Tel. +49-8161-71 2131 Lehrstuhl für Genomorientierte Bioinformatik Fax. +49-8161-71 2186 Technische Universität München Wissenschaftszentrum Weihenstephan 85350 Freising, Germany and Institut für Bioinformatik und Systembiologie / MIPS Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt Ingolstädter Landstrasse 1 85764 Neuherberg, Germany http://mips.gsf.de/staff/pagel ______________________________________________ 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.