Hi Bruce, That really isn't enough for anyone to be able to answer your question. In the simplest possible reading, you need lines() or points(), but your mention of regression leads me to believe you might want something more complex.
Why don't you take a look at http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example and figure out how to clarify your question? Sarah On Thu, Jan 3, 2013 at 11:39 AM, Bruce Kindseth <bkinds...@cox.net> wrote: > Good Morning, > > I have 3 sets of data, all with the same horizontal axis but with varying > vertical input. I want to plot all 3 sets on one x-y plot. I can get 3 > linear regression plots and 3 polynomial regression plots on the same chart > but I have not been able to get more than one set of input data on the same > chart. Can you help me? > > Thank you for all that you do to provide R to the public. > > Bruce Kindseth > > Narragansett, RI > > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.