Dear Karena,
Please read the posting guide : your example cannot be reproduced because we don't know in which package the 'running' function resides. Generally speaking, use 'points' or 'lines' to add points or lines to the current device. greetings, remko -- View this message in context: http://r.789695.n4.nabble.com/how-to-make-multiple-curves-in-one-plot-tp3023135p3023169.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.