protected:
Double_t fV,fTheta,fPhi; // Vector in spherical coordinates
Double_t fDx,fDy,fDz; // Errors on Cartesian coordinates
Double_t fDresult; // Error on scalar result (e.g. norm or dotproduct)
protected:
Double_t fV,fTheta,fPhi; // Vector in spherical coordinates
Double_t fDx,fDy,fDz; // Errors on Cartesian coordinates
Double_t fDresult; // Error on scalar result (e.g. norm or dotproduct)