"axis scale / dataspectratio" - problem with 3D-graph

[Clara Brück]

Hello,

I've got an ellipsoid, x and y with same dimensions (xr = yr =6800), and want 
to show only one half of it. When I set the y-limits so that only one half is 
shown (ylim([0 6800]), the graph is stretched, so that it looks like half of an 
egg.
I've tried to set the dataspectratio to [1 1 1] but then the graph is only 
shown in right dimensions when I look from the front( like 2D).
For Matlab I've found the "axis vis3d" function which allows to rotate a 
3D-graph showing the right dimensons from all directions, but I can't find 
something like that for Octave.
(mathworks.com: "axis vis3d freezes aspect ratio properties to enable rotation 
of 3-D objects and overrides stretch-to-fill.")

I'm using a portable version : Octave 3.0.0 whith QtOctave 0.7.2

I would be very very thankful if someone has a solution for that, because I've 
been trying to solve it by myself for many many frustrating hours.

Greetings!
Clara

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