how to plot ellipsoid?

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TheRealTonyStark
TheRealTonyStark 2019-7-13
评论： Star Strider 2021-4-11
ellipsoid equation is x^2 +y^2 +2z^2 =10

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回答（3 个）

SYED IMTIAZ ALI SHAH
Your question need more elaboration, however this might help
https://www.mathworks.com/matlabcentral/answers/86921-plot-an-ellipsoid-with-matlab
Star Strider
Star Strider 2019-7-13
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 个评论
qilin guo
qilin guo 2021-4-11
Very good! It helps me! Thank you very much!

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Matt J
Matt J 2021-4-11
编辑：Matt J 2021-4-11
You can also use,
https://www.mathworks.com/matlabcentral/fileexchange/87584-object-oriented-tools-for-fitting-conics-and-quadrics
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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