We cannot reproduce your example, don't have the data (or don't know where it is if we do) and where did the allEffects function come from?
If this just makes a regular plot using base graphics and not messing with the user coordinates, then you can just use the points function to add additional points to the plot. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Anderson, Chris > Sent: Tuesday, May 04, 2010 11:06 AM > To: 'r-help@R-project.org' > Subject: [R] help overlay scatterplot to effects plot > > I have a process where I am creating a effects plot similar to the > cowles effect example. I would like to add the point estimates to the > effects plot, can someone show me the correct syntax. I have included > the "R" effects example, so you can show me the correct syntax. Thanks > > > > mod.cowles <- glm(volunteer ~ sex + neuroticism*extraversion, > > data=Cowles, family=binomial) > > eff.cowles <- allEffects(mod.cowles, xlevels=list(neuroticism=0:24, > > extraversion=seq(0, 24, 6)), given.values=c(sexmale=0.5)) > > eff.cowles > > plot(eff.cowles, 'neuroticism:extraversion', ylab="Prob(Volunteer)", > ticks=list(at=c(.1,.25,.5,.75,.9))) > > > Chris Anderson > Data Analyst > Medical Affairs > wk: 925-677-4870 > cell: 707-315-8486 > Fax:925-677-4670 > > > </pre><br>This electronic message transmission, including any > attachments, contains <br>information which may be confidential, > privileged and/or otherwise exempt <br>from disclosure under applicable > law. The information is intended to be for the <br>use of the > individual(s) or entity named above. If you are not the intended > <br>recipient or the employee or agent responsible for delivering the > message <br>to the intended recipient, you are hereby notified that any > disclosure, copying, <br>distribution or use of the contents of this > information is strictly prohibited. If <br>you have received this > electronic transmission in error, please notify the sender > <br>immediately by telephone (800-676-6777) or by a "reply to sender > only" <br>message and destroy all electronic and hard copies of the > communication, <br>including attachments. Thank you.<br><br>For more > information on Paradigm Management Services, LLC, please visit > <br>http://www.paradigmcorp.com <br> > > [[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. ______________________________________________ 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.