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 <gavin.simpson@ucl.ac.uk> wrote:

From: Gavin Simpson <gavin.simpson@ucl.ac.uk>
Subject: Re: [R-sig-teaching] Plotting two elipses in the
To: "Ali Zanaty" <zanaty2005@yahoo.com>
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
> 
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