Conversion from conic parameters to geometric parameters of ellipsoids

Conic parameters to geometric parameters of ellipsoids.it checked real ellipsoid or not

Conversion from conic parameters to geometric parameters of ellipsoids


% Here is a general conic equation in 3D
% A x2 + B y2 + C z2 + 2D xy +2E xz + 2F yz + 2G x + 2H y + 2I z = 1

%INPUT:
% v = [A,B,C,D,E,F,G,H,I]' vector of the conic coefficient

%OUTPUT
% center: center of ellipsoid (Xo,Yo,Zo)
% radii: radii of ellipsoid (a,b,c)
% R: Rotate matrix
% Angle: 3 rotational angles (alfax,alfay,alfaz) which represent rotations
% around x-,y- and z- axes respectively (degree)

% code is: 1 - ellipsoid
%
% 0 - not ellipsoid
How to cite this code:
BEKTAS, Sebahattin. Orthogonal distance from an ellipsoid. Bol. Ciênc. Geod. [online]. 2014, vol.20, n.4, pp. 970-983. ISSN 1982-2170.