R help - Aug 2005 - how to draw an ellipse

That's probably a stupid question, but I'm looking for a low-level 
command which plots ellipse, specifying only center and deformation 
axes. The purpose is to illustrate bivariates gaussians with 2D .95 
confident levels without using any specific library.

Thanxs for your help,

Guillaume

Guillaume Allain <guillaume.allain <at> cbconseil.com> writes:
> 
> That's probably a stupid question, but I'm looking for a low-level 
> command which plots ellipse, specifying only center and deformation 
> axes. The purpose is to illustrate bivariates gaussians with 2D .95 
> confident levels without using any specific library.
> 
> Thanxs for your help,
> 
> Guillaume

  I don't know exactly why you want to avoid "using any specific
library", but the ellipse package (sic) would seem to do what
you want pretty conveniently ...

  cheers
    Ben Bolker

Le 18.08.2005 15:45, Guillaume Allain a ??crit :
>That's probably a stupid question, but I'm looking for a low-level 
>command which plots ellipse, specifying only center and deformation 
>axes. The purpose is to illustrate bivariates gaussians with 2D .95 
>confident levels without using any specific library.
>
>Thanxs for your help,
>
>Guillaume
>  
>
Hello,

Why don't you want to use any specific library ? You can't reinvent the 
wheel !!
There is a package ellipse on CRAN which will do what you are looking for.
Have you tried
 > RSiteSearch("ellipse")

Cheers,

Romain

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