On 10/03/2012 9:44 AM, Duncan Murdoch wrote:
My first reply to this went privately, by accident. I've done a little
editing to it, but mainly this is for the archives.
On 12-03-09 2:36 PM, Michael Friendly wrote:
> For a paper dealing with generalized ellipsoids, I want to illustrate in
> 3D
My first reply to this went privately, by accident. I've done a little
editing to it, but mainly this is for the archives.
On 12-03-09 2:36 PM, Michael Friendly wrote:
For a paper dealing with generalized ellipsoids, I want to illustrate in
3D an ellipsoid that is unbounded
in one dimension, h
Michael Friendly yorku.ca> writes:
>
> For a paper dealing with generalized ellipsoids, I want to illustrate in
> 3D an ellipsoid that is unbounded
> in one dimension, having the shape of an infinite cylinder along, say,
> z, but whose cross-section in (x,y)
> is an ellipse, say, given by the
For a paper dealing with generalized ellipsoids, I want to illustrate in
3D an ellipsoid that is unbounded
in one dimension, having the shape of an infinite cylinder along, say,
z, but whose cross-section in (x,y)
is an ellipse, say, given by the 2x2 matrix cov(x,y).
I've looked at rgl:::cylind
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