CartesianTrajectoryError Class Reference

#include <CartesianTrajectoryError.h>

Public Member Functions
	CartesianTrajectoryError ()
	CartesianTrajectoryError (const AlgebraicSymMatrix66 &aCovarianceMatrix)
const AlgebraicSymMatrix66 &	matrix () const
void	operator*= (double factor)
const GlobalError	position () const
	Position error submatrix. More...

Private Attributes
AlgebraicSymMatrix66	theCovarianceMatrix

Detailed Description

Class containing (6x6) error matrix of a track in the global, Cartesian frame. This error matrix should be used with care and in particular not as an intermediate frame when transforming between different, 5-dimensional track parameter frames. The order of the quantities inside the error matrix is the same as for the corresponding parameter vector provided by the GlobalTrajectoryParameters class.

Definition at line 15 of file CartesianTrajectoryError.h.

Constructor & Destructor Documentation

CartesianTrajectoryError::CartesianTrajectoryError ( )

inline

Definition at line 18 of file CartesianTrajectoryError.h.

{}

CartesianTrajectoryError::CartesianTrajectoryError ( const AlgebraicSymMatrix66 &  aCovarianceMatrix )

inline

Constructing class from error matrix.

Definition at line 22 of file CartesianTrajectoryError.h.

                                                                          :
    theCovarianceMatrix(aCovarianceMatrix) { }

Member Function Documentation

const AlgebraicSymMatrix66& CartesianTrajectoryError::matrix ( void  ) const

inline

Returning error matrix.

Definition at line 29 of file CartesianTrajectoryError.h.

References theCovarianceMatrix.

Referenced by MuonSeedsAnalyzer::analyze(), TestHits::analyze(), TestSmoothHits::analyze(), TestTrackHits::analyze(), GlobalTrackerMuonAlignment::analyzeTrackTrack(), GlobalTrackerMuonAlignment::analyzeTrackTrajectory(), SignedImpactParameter3D::apply(), SignedDecayLength3D::apply(), reco::TrackGhostTrackState::cartesianCovariance(), HTrack::computePull(), FreeTrajectoryState::createCurvilinearError(), GlobalTrackerMuonAlignment::debugTrajectorySOS(), GlobalTrackerMuonAlignment::debugTrajectorySOSv(), TrackAnalyzer::fillHistosForState(), CSCEfficiency::getFromFTS(), IPTools::linearizedSignedImpactParameter3D(), SimpleCosmicBONSeeder::seeds(), IPTools::signedDecayLength3D(), TrajectoryStateClosestToBeamLine::transverseImpactParameter(), reco::TrackGhostTrackState::vertexStateOnGhostTrack(), and reco::TrackGhostTrackState::vertexStateOnMeasurement().

                                             {
    return theCovarianceMatrix;
  }

void CartesianTrajectoryError::operator*= ( double  factor )

inline

Enables the multiplication of the error matrix with a scalar "factor".

Definition at line 36 of file CartesianTrajectoryError.h.

References theCovarianceMatrix.

                                   {
    theCovarianceMatrix *= factor;
  }

const GlobalError CartesianTrajectoryError::position ( ) const

inline

Position error submatrix.

Returning (3x3) submatrix of error matrix containing information about the errors and correlations between the different position coordinates.

Definition at line 46 of file CartesianTrajectoryError.h.

References theCovarianceMatrix.

Referenced by IPTools::absoluteImpactParameter(), CkfDebugger::analyseCompatibleMeasurements(), TestHits::analyze(), TestSmoothHits::analyze(), TestTrackHits::analyze(), reco::TrackGhostTrackState::cartesianError(), BarrelDetLayer::compatible(), TracksClusteringFromDisplacedSeed::nearTracks(), and SimpleNavigableLayer::wellInside().

                                     {
    return GlobalError( theCovarianceMatrix.Sub<AlgebraicSymMatrix33>(0,0));
  }

Member Data Documentation

AlgebraicSymMatrix66 CartesianTrajectoryError::theCovarianceMatrix

private

Definition at line 52 of file CartesianTrajectoryError.h.

Referenced by matrix(), operator*=(), and position().