[R] drawing ellipses

[Yves Brostaux]

Hello again,

First I want to thank all the people who answered my question about line 
width in graphs. I promise I will learn the 'par' help page by heart for 
the end of the month !

I now want to trace some ellipses to emphasize groups of data. I found how 
to trace circles with 'symbols()', but no ellipse. I'm planning on writing 
my own function based on 'polygon()' and the ellipse equation. Does anybody 
already have done similar work or have another solution ?

Thanks again,


-- 
Ir. Yves Brostaux - Statistics and Computer Science Dpt.
Gembloux Agricultural University
8, avenue de la Faculté B-5030 Gembloux (Belgium)
Tél : +32 (0)81 62 24 69
E-mail : brostaux.y at fsagx.ac.be
Web : http://www.fsagx.ac.be/si/

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