Dynamic-Calibration/utils/YALMIP-master/extras/@lmi/ellipsoid.m

23 lines
625 B
Matlab
Executable File

function p = ellipsoid(X)
% polytope Converts set object to ELLIPSOID object
%
% E = ellipsoid(F)
% [P,x] = ellipsoid(F)
%
% P : ELLIPSOID object (Requires the Ellipsoidal Toolbox)
% x : sdpvar object defining the variables in the polytope P.H*x<P.K
X = flatten(F);
if all(is(X,'element-wise'))
f = [];
for i = 1:length(X)
if X.clauses{i}.type==2
fi = X.clauses{i}.data;
[Q,c,f,x,info] = quaddecomp(fi);
p=ellipsoid(c,-Q);
end
end
else
error('ELLIPSOID can only be applied to constraint objects with quadratic inequalities.')
end