I forget the original thread. Are you trying to plot ellipsoids (egg
shapes)?
You can modify the scale factor in spherical coordinates for each axes:
x = rx (sin t) cos f
y= ry (sin t) sin f
z = rz cos t
where 0<: t<2p1, 0<:f<:1p1 and rx, ry, rz give the axis lengths parallel
to x y and z axes.
Do you need to rotate this in space?
On 3/19/2015 1:44 AM, Raul Miller wrote:
https://johncarlosbaez.wordpress.com/2015/03/17/planets_in_the_4th_dimension/
looks like a plausible approach for finding parametric descriptions of
ellipses.
I've not tried it, though.
Thanks,
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