#include <TrackAssociatorByChi2Impl.h>

Inheritance diagram for TrackAssociatorByChi2Impl:

Public Types
typedef std::map< double, SimTrack >	Chi2SimMap

typedef std::pair< reco::Track, Chi2SimMap >	RecoToSimPair

typedef std::vector < RecoToSimPair >	RecoToSimPairAssociation

Public Member Functions
virtual reco::RecoToSimCollection	associateRecoToSim (const edm::RefToBaseVector< reco::Track > &, const edm::RefVector< TrackingParticleCollection > &) const override
	Association Reco To Sim with Collections. More...

virtual reco::RecoToSimCollection	associateRecoToSim (const edm::Handle< edm::View< reco::Track > > &tCH, const edm::Handle< TrackingParticleCollection > &tPCH) const override
	compare reco to sim the handle of reco::Track and TrackingParticle collections More...

virtual reco::SimToRecoCollection	associateSimToReco (const edm::RefToBaseVector< reco::Track > &, const edm::RefVector< TrackingParticleCollection > &) const override
	Association Sim To Reco with Collections. More...

virtual reco::SimToRecoCollection	associateSimToReco (const edm::Handle< edm::View< reco::Track > > &tCH, const edm::Handle< TrackingParticleCollection > &tPCH) const override
	compare reco to sim the handle of reco::Track and TrackingParticle collections More...

	TrackAssociatorByChi2Impl (const MagneticField &mF, const reco::BeamSpot &bs, double chi2Cut, bool onlyDiag)
	Constructor. More...

Public Member Functions inherited from reco::TrackToTrackingParticleAssociatorBaseImpl
virtual reco::RecoToSimCollectionSeed	associateRecoToSim (const edm::Handle< edm::View< TrajectorySeed > > &, const edm::Handle< TrackingParticleCollection > &) const

virtual reco::RecoToSimCollectionTCandidate	associateRecoToSim (const edm::Handle< TrackCandidateCollection > &, const edm::Handle< TrackingParticleCollection > &) const

virtual reco::SimToRecoCollectionSeed	associateSimToReco (const edm::Handle< edm::View< TrajectorySeed > > &, const edm::Handle< TrackingParticleCollection > &) const

virtual reco::SimToRecoCollectionTCandidate	associateSimToReco (const edm::Handle< TrackCandidateCollection > &, const edm::Handle< TrackingParticleCollection > &) const

	TrackToTrackingParticleAssociatorBaseImpl ()
	Constructor. More...

virtual	~TrackToTrackingParticleAssociatorBaseImpl ()
	Destructor. More...

Private Member Functions
double	associateRecoToSim (reco::TrackCollection::const_iterator, TrackingParticleCollection::const_iterator, const reco::BeamSpot &) const
	compare reco::TrackCollection and TrackingParticleCollection iterators: returns the chi2 More...

double	compareTracksParam (reco::TrackCollection::const_iterator, edm::SimTrackContainer::const_iterator, const math::XYZTLorentzVectorD &, const GlobalVector &, const reco::TrackBase::CovarianceMatrix &, const reco::BeamSpot &) const
	compare reco::TrackCollection and edm::SimTrackContainer iterators: returns the chi2 More...

RecoToSimPairAssociation	compareTracksParam (const reco::TrackCollection &, const edm::SimTrackContainer &, const edm::SimVertexContainer &, const reco::BeamSpot &) const
	compare collections reco to sim More...

double	getChi2 (const reco::TrackBase::ParameterVector &rParameters, const reco::TrackBase::CovarianceMatrix &recoTrackCovMatrix, const Basic3DVector< double > &momAtVtx, const Basic3DVector< double > &vert, int charge, const reco::BeamSpot &) const
	basic method where chi2 is computed More...

std::pair< bool, reco::TrackBase::ParameterVector >	parametersAtClosestApproach (const Basic3DVector< double > &, const Basic3DVector< double > &, float, const reco::BeamSpot &) const
	propagate the track parameters of TrackinParticle from production vertex to the point of closest approach to the beam line. More...

Private Attributes
double	chi2cut

bool	onlyDiagonal

const reco::BeamSpot *	theBeamSpot

const MagneticField *	theMF

Detailed Description

Class that performs the association of reco::Tracks and TrackingParticles evaluating the chi2 of reco tracks parameters and sim tracks parameters. The cut can be tuned from the config file: see data/TrackAssociatorByChi2.cfi. Note that the Association Map is filled with -ch2 and not chi2 because it is ordered using std::greater: the track with the lowest association chi2 will be the first in the output map.It is possible to use only diagonal terms (associator by pulls) seeting onlyDiagonal = true in the PSet

Author: cerati, magni

Definition at line 35 of file TrackAssociatorByChi2Impl.h.

Member Typedef Documentation

typedef std::map<double, SimTrack> TrackAssociatorByChi2Impl::Chi2SimMap

Definition at line 38 of file TrackAssociatorByChi2Impl.h.

typedef std::pair< reco::Track, Chi2SimMap> TrackAssociatorByChi2Impl::RecoToSimPair

Definition at line 39 of file TrackAssociatorByChi2Impl.h.

typedef std::vector< RecoToSimPair > TrackAssociatorByChi2Impl::RecoToSimPairAssociation

Definition at line 40 of file TrackAssociatorByChi2Impl.h.

Constructor & Destructor Documentation

TrackAssociatorByChi2Impl::TrackAssociatorByChi2Impl	(	const MagneticField &	mF,
		const reco::BeamSpot &	bs,
		double	chi2Cut,
		bool	onlyDiag
	)

inline

Constructor.

Definition at line 57 of file TrackAssociatorByChi2Impl.h.

                                                           :
     theMF(&mF),
     theBeamSpot(&bs),
     chi2cut(chi2Cut),
     onlyDiagonal(onlyDiag) {
     }

Member Function Documentation

RecoToSimCollection TrackAssociatorByChi2Impl::associateRecoToSim	(	const edm::RefToBaseVector< reco::Track > &	tC,
		const edm::RefVector< TrackingParticleCollection > &	tPCH
	)		const

overridevirtual

Association Reco To Sim with Collections.

Implements reco::TrackToTrackingParticleAssociatorBaseImpl.

Definition at line 121 of file TrackAssociatorByChi2Impl.cc.

virtual reco::RecoToSimCollection TrackAssociatorByChi2Impl::associateRecoToSim	(	const edm::Handle< edm::View< reco::Track > > &	tCH,
		const edm::Handle< TrackingParticleCollection > &	tPCH
	)		const

inlineoverridevirtual

compare reco to sim the handle of reco::Track and TrackingParticle collections

Reimplemented from reco::TrackToTrackingParticleAssociatorBaseImpl.

Definition at line 78 of file TrackAssociatorByChi2Impl.h.

                                                                                              {
     return TrackToTrackingParticleAssociatorBaseImpl::associateRecoToSim(tCH,tPCH);
   }

double TrackAssociatorByChi2Impl::associateRecoToSim	(	reco::TrackCollection::const_iterator	,
		TrackingParticleCollection::const_iterator	,
		const reco::BeamSpot &
	)		const

private

compare reco::TrackCollection and TrackingParticleCollection iterators: returns the chi2

SimToRecoCollection TrackAssociatorByChi2Impl::associateSimToReco	(	const edm::RefToBaseVector< reco::Track > &	tC,
		const edm::RefVector< TrackingParticleCollection > &	tPCH
	)		const

overridevirtual

Association Sim To Reco with Collections.

Implements reco::TrackToTrackingParticleAssociatorBaseImpl.

Definition at line 179 of file TrackAssociatorByChi2Impl.cc.

virtual reco::SimToRecoCollection TrackAssociatorByChi2Impl::associateSimToReco	(	const edm::Handle< edm::View< reco::Track > > &	tCH,
		const edm::Handle< TrackingParticleCollection > &	tPCH
	)		const

inlineoverridevirtual

compare reco to sim the handle of reco::Track and TrackingParticle collections

Reimplemented from reco::TrackToTrackingParticleAssociatorBaseImpl.

Definition at line 85 of file TrackAssociatorByChi2Impl.h.

                                                                                              {
     return TrackToTrackingParticleAssociatorBaseImpl::associateSimToReco(tCH,tPCH);
   }  

double TrackAssociatorByChi2Impl::compareTracksParam	(	reco::TrackCollection::const_iterator	,
		edm::SimTrackContainer::const_iterator	,
		const math::XYZTLorentzVectorD &	,
		const GlobalVector &	,
		const reco::TrackBase::CovarianceMatrix &	,
		const reco::BeamSpot &
	)		const

private

compare reco::TrackCollection and edm::SimTrackContainer iterators: returns the chi2

TrackAssociatorByChi2Impl::RecoToSimPairAssociation TrackAssociatorByChi2Impl::compareTracksParam	(	const reco::TrackCollection &	rtColl,
		const edm::SimTrackContainer &	stColl,
		const edm::SimVertexContainer &	svColl,
		const reco::BeamSpot &	bs
	)		const

private

compare collections reco to sim

Definition at line 40 of file TrackAssociatorByChi2Impl.cc.

double TrackAssociatorByChi2Impl::getChi2	(	const reco::TrackBase::ParameterVector &	rParameters,
		const reco::TrackBase::CovarianceMatrix &	recoTrackCovMatrix,
		const Basic3DVector< double > &	momAtVtx,
		const Basic3DVector< double > &	vert,
		int	charge,
		const reco::BeamSpot &	bs
	)		const

private

basic method where chi2 is computed

Definition at line 83 of file TrackAssociatorByChi2Impl.cc.

pair< bool, TrackBase::ParameterVector > TrackAssociatorByChi2Impl::parametersAtClosestApproach	(	const Basic3DVector< double > &	vertex,
		const Basic3DVector< double > &	momAtVtx,
		float	charge,
		const reco::BeamSpot &	bs
	)		const