how to plot ellipsoid?

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TheRealTonyStark
TheRealTonyStark on 13 Jul 2019
Commented: Star Strider on 11 Apr 2021
ellipsoid equation is x^2 +y^2 +2z^2 =10

Answers (3)

SYED IMTIAZ ALI SHAH
SYED IMTIAZ ALI SHAH on 13 Jul 2019
Your question need more elaboration, however this might help

Star Strider
Star Strider on 13 Jul 2019
Try this (partially copied from the documentation page Connecting Equal Values with Isosurfaces):
x = linspace(-10, 10, 50);
[X,Y,Z] = meshgrid(x);
V = (X.^2 + Y.^2 + 2*Z.^2);
figure
hp = patch(isosurface(X,Y,Z,V,10))
isonormals(X,Y,Z,V,hp)
hp.FaceColor = 'r';
hp.EdgeColor = 'none';
camlight left;
lighting gouraud
grid on
view(-20,30)
producing:
how to plot ellipsoid - 2019 07 13.png
Also see the documentation on the isosurface function.
  2 Comments
qilin guo
qilin guo on 11 Apr 2021
Very good! It helps me! Thank you very much!
Star Strider
Star Strider on 11 Apr 2021
My pleasure!

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Matt J
Matt J on 11 Apr 2021
Edited: Matt J on 11 Apr 2021
You can also use,
which has the convenience of letting you specify yaw/pitch/roll angles for the ellipsoid.
[Center,ABC,YPR]=deal([0 2 1] , [6 2 1], [60 40 0]); %center, radii, yaw/pitch/roll
obj=ellipsoidalFit.groundtruth([],Center,ABC,YPR);
plot(obj, {'FaceColor', 'm'});
xlabel X; ylabel Y; zlabel Z

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