[R] is there a way to visualize 3D normal distributions?

[Ben Bolker]

Duncan Murdoch <murdoch <at> stats.uwo.ca> writes:

> 
> On 2/2/2006 3:39 AM, Michael wrote:
> > 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.
> 
> The misc3d package includes a function for 3d contour plots; that should 
> do what you want.
> 

  is contour3d really necessary or could you just plot ellipsoids?
(library(rgl); demo(shapes3d)) -- still a little bit of figuring 
to do, but this should get you most of the way there.

  Ben Bolker