Hi Ali, While you might be interested in using code provided here for preparing lectures for teaching, the purpose of this mailing list is to discuss how to actually teach R in the classroom. Your question is a general question about R not about how to teach R. You really should send these messages to R-help and I note that several other people in the past (besides Gavin) have told you that these posts should be directed at that mailing list and not here as they are off-topic. Also posting to the R-help mailing list will ensure you get a speedy reply. Chris On 06/14/2010 01:11 PM, Ali Zanaty wrote: > Dear Gavin: > > > > I am preparing class notes for an introduction course in R (undergraduate level). > > > > I have this data and I want to know how to plotting two ellipses (one for each group) in the same graph. > > > > With many thanks > > > > > > Ali > > > > --- On Mon, 6/14/10, Gavin Simpson wrote: > > From: Gavin Simpson > Subject: Re: [R-sig-teaching] Plotting two elipses in the > To: "Ali Zanaty" > Cc: r-sig-teaching@r-project.org > Date: Monday, June 14, 2010, 5:33 PM > > You are posting to the *wrong* list! Your question has nothing to do > with Teaching and R? > > Please post on the main R-Help mailing list. > > G > > On Mon, 2010-06-14 at 10:19 -0700, Ali Zanaty wrote: > >> Dear All R Users: >> >> >> >> >> >> What I need to do is to plot two elipses in the same graph (one for >> each group). You can use either X1 or X2 as the X-axis and the other >> variable as the Y-axis. >> >> >> >> Also I need to show the 95% C.I. or P.I. of the overlapping part of the two elipses. >> >> >> >> With many thanks. >> >> >> >> Data can be found at >> >> >> >> http://www.usm.maine.edu/~aaboueissa/Rhelps/dataelipse.txt >> >> >> >> >> >> Thank you so much for your helps. >> >> >> >> Ali >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> [[alternative HTML version deleted]] >> >> _______________________________________________ >> R-sig-teaching@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-sig-teaching >> > > > > _______________________________________________ > R-sig-teaching@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-sig-teaching > [[alternative HTML version deleted]]