Thanks a lot John. Thanks a lot everybody!

I guess that I just need an ellipsoid, not contour... in 3D, ...

How do I do that most conviniently and efficiently given that I have the
covarance matrix for the gaussian density...

On 2/2/06, John Fox <jfox@mcmaster.ca> wrote:
>
> Dear Michael,
>
> Some time ago, I posted to r-help a solution to a problem very close to
> this, which adapts the scatter3d() function in the Rcmdr package so that
> it
> plots concentration ellipsoids. You'll find the code at
> <http://finzi.psych.upenn.edu/R/Rhelp02a/archive/61156.html>.
>
> I hope this helps,
> John
>
> --------------------------------
> John Fox
> Department of Sociology
> McMaster University
> Hamilton, Ontario
> Canada L8S 4M4
> 905-525-9140x23604
> http://socserv.mcmaster.ca/jfox
> --------------------------------
>
> > -----Original Message-----
> > From: r-help-bounces@stat.math.ethz.ch
> > [mailto:r-help-bounces@stat.math.ethz.ch] On Behalf Of Michael
> > Sent: Thursday, February 02, 2006 3:39 AM
> > To: R-help@stat.math.ethz.ch
> > Subject: [R] is there a way to visualize 3D normal distributions?
> >
> > Hi all,
> >
> > How do I visualize a contour of a tri-variate normal distribution?
> >
> > I just like to see the ellipsoid very much. I hope there is a
> > easy way or existing method in R.
> >
> > Thank you a lot!
> >
> > Michael.
> >
> >       [[alternative HTML version deleted]]
> >
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>
>

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