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Ellipsoid fit

10 Jul 2009 (Updated 17 Jul 2009)

Fits an ellipsoid to data using linear least squares.

File Information
Description	Fits an ellipsoid into a 3D set of points, allows some constraints, like orientation constraint and equal radii constraint. E.g., you can use it to fit a rugby ball, or a sphere. 'help ellipsoid_fit' says it all. Returns both the algebraic description of the ellipsoid (the nine coefficients of the quadratic form) and the geometric description (center, radii, principal axes).
MATLAB release	MATLAB 7.7 (R2008b)

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Everyone's Tags	ellipsoid(5), fitting(2), least squares, optimization, self_rating
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Comments and Ratings (4)
21 Jun 2011	Hui Ma	I am sorry, I meant how do you determine three rotation angles using "evecs" then?
21 Jun 2011	Hui Ma	I have a question: we can find the center, the radii of the ellipsoid and also the 3*3 direction matrix "evecs" using this program. Then how do you determine the three rotation angles using "evecs"? Thanks for your help!
09 Sep 2011	Kevin Shaw	Works great.
10 Feb 2012	Simone	Working very good

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Updates
17 Jul 2009	Just a better description.