#include <KalmanAlignmentTrackRefitter.h>

Inheritance diagram for KalmanAlignmentTrackRefitter:

Public Types
typedef std::vector < KalmanAlignmentSetup * >	AlignmentSetupCollection

typedef AlignmentAlgorithmBase::ConstTrajTrackPair	ConstTrajTrackPair

typedef AlignmentAlgorithmBase::ConstTrajTrackPairCollection	ConstTrajTrackPairCollection

typedef edm::OwnVector < TrackingRecHit >	RecHitContainer

typedef KalmanAlignmentSetup::SortingDirection	SortingDirection

typedef std::vector< TrackletPtr >	TrackletCollection

typedef KalmanAlignmentTracklet::TrackletPtr	TrackletPtr

typedef KalmanAlignmentTracklet::TrajTrackPairCollection	TrajTrackPairCollection

Public Types inherited from TrackProducerBase< reco::Track >
typedef std::pair< Trajectory , std::pair< reco::Track , PropagationDirection > >	AlgoProduct

typedef std::vector< AlgoProduct >	AlgoProductCollection

typedef std::vector< reco::Track >	TrackCollection

Public Member Functions
	KalmanAlignmentTrackRefitter (const edm::ParameterSet &config, AlignableNavigator *navigator)
	Constructor. More...

virtual void	produce (edm::Event &, const edm::EventSetup &)
	Dummy implementation, due to inheritance from TrackProducerBase. More...

TrackletCollection	refitTracks (const edm::EventSetup &eventSetup, const AlignmentSetupCollection &algoSetups, const ConstTrajTrackPairCollection &tracks, const reco::BeamSpot *beamSpot)

	~KalmanAlignmentTrackRefitter (void)
	Destructor. More...

Public Member Functions inherited from TrackProducerBase< reco::Track >
const edm::ParameterSet &	getConf () const

virtual void	getFromES (const edm::EventSetup &, edm::ESHandle< TrackerGeometry > &, edm::ESHandle< MagneticField > &, edm::ESHandle< TrajectoryFitter > &, edm::ESHandle< Propagator > &, edm::ESHandle< MeasurementTracker > &, edm::ESHandle< TransientTrackingRecHitBuilder > &)
	Get needed services from the Event Setup. More...

virtual void	getFromEvt (edm::Event &, edm::Handle< TrackCandidateCollection > &, reco::BeamSpot &)
	Get TrackCandidateCollection from the Event (needed by TrackProducer) More...

virtual void	getFromEvt (edm::Event &, edm::Handle< TrackCollection > &, reco::BeamSpot &)
	Get TrackCollection from the Event (needed by TrackRefitter) More...

void	setAlias (std::string alias)
	set the aliases of produced collections More...

void	setClusterRemovalInfo (const edm::InputTag &clusterRemovalInfo)
	Sets the information on cluster removal, and turns it on. More...

void	setConf (edm::ParameterSet conf)
	Set parameter set. More...

void	setSecondHitPattern (Trajectory traj, reco::Track &track, const Propagator prop, const MeasurementTracker *measTk)

void	setSrc (edm::InputTag src, edm::InputTag bsSrc)
	set label of source collection More...

	TrackProducerBase (bool trajectoryInEvent=false)
	Constructor. More...

virtual	~TrackProducerBase ()
	Destructor. More...

Private Member Functions
void	debugTrackData (const std::string identifier, const Trajectory traj, const reco::Track track, const reco::BeamSpot *bs)

TrajTrackPairCollection	refitSingleTracklet (const TrackingGeometry geometry, const MagneticField magneticField, const TrajectoryFitter fitter, const Propagator propagator, const TransientTrackingRecHitBuilder recHitBuilder, const reco::TransientTrack &originalTrack, RecHitContainer &recHits, const reco::BeamSpot beamSpot, const SortingDirection &sortingDir, bool useExternalEstimate, bool reuseMomentumEstimate, const std::string identifier=std::string("RefitSingle_"))

bool	rejectTrack (const reco::Track *track) const

void	sortRecHits (RecHitContainer &hits, const TransientTrackingRecHitBuilder *builder, const SortingDirection &sortingDir) const

Private Attributes
bool	theDebugFlag

AlignableNavigator *	theNavigator

TrackProducerAlgorithm < reco::Track >	theRefitterAlgo

Additional Inherited Members
Protected Attributes inherited from TrackProducerBase< reco::Track >
std::string	alias_

edm::InputTag	bsSrc_

edm::InputTag	clusterRemovalInfo_

bool	rekeyClusterRefs_

edm::OrphanHandle < TrackCollection >	rTracks_

edm::ESHandle< NavigationSchool >	theSchool

bool	trajectoryInEvent_

Detailed Description

This class serves the very specific needs of the KalmanAlignmentAlgorithm. Tracks are partially refitted to 'tracklets' using the current estimate on the alignment (see class CurrentAlignmentKFUpdator. These tracklets are either used to compute an exteranal estimate for other tracklets or are handed to the alignment algorithm for further processing. If a tracklet is used as an external prediction or for further processing is defined via the configuration file. NOTE: The trajectory measurements of the tracklets are always ordered along the direction of the momentum!

Definition at line 31 of file KalmanAlignmentTrackRefitter.h.

Member Typedef Documentation

typedef std::vector< KalmanAlignmentSetup* > KalmanAlignmentTrackRefitter::AlignmentSetupCollection

Definition at line 37 of file KalmanAlignmentTrackRefitter.h.

typedef AlignmentAlgorithmBase::ConstTrajTrackPair KalmanAlignmentTrackRefitter::ConstTrajTrackPair

Definition at line 46 of file KalmanAlignmentTrackRefitter.h.

typedef AlignmentAlgorithmBase::ConstTrajTrackPairCollection KalmanAlignmentTrackRefitter::ConstTrajTrackPairCollection

Definition at line 47 of file KalmanAlignmentTrackRefitter.h.

typedef edm::OwnVector< TrackingRecHit > KalmanAlignmentTrackRefitter::RecHitContainer

Definition at line 40 of file KalmanAlignmentTrackRefitter.h.

typedef KalmanAlignmentSetup::SortingDirection KalmanAlignmentTrackRefitter::SortingDirection

Definition at line 38 of file KalmanAlignmentTrackRefitter.h.

typedef std::vector< TrackletPtr > KalmanAlignmentTrackRefitter::TrackletCollection

Definition at line 44 of file KalmanAlignmentTrackRefitter.h.

typedef KalmanAlignmentTracklet::TrackletPtr KalmanAlignmentTrackRefitter::TrackletPtr

Definition at line 43 of file KalmanAlignmentTrackRefitter.h.

typedef KalmanAlignmentTracklet::TrajTrackPairCollection KalmanAlignmentTrackRefitter::TrajTrackPairCollection

Definition at line 42 of file KalmanAlignmentTrackRefitter.h.

Constructor & Destructor Documentation

KalmanAlignmentTrackRefitter::KalmanAlignmentTrackRefitter	(	const edm::ParameterSet &	config,
		AlignableNavigator *	navigator
	)

Constructor.

Definition at line 27 of file KalmanAlignmentTrackRefitter.cc.

References edm::ParameterSet::getParameter(), TrackProducerBase< T >::setConf(), and TrackProducerBase< T >::setSrc().

                                                                                                                          :
   theRefitterAlgo( config ),
   theNavigator( navigator ),
   theDebugFlag( config.getUntrackedParameter<bool>( "debug", true ) )
 {
   TrackProducerBase< reco::Track >::setConf( config );
   TrackProducerBase< reco::Track >::setSrc( config.getParameter< edm::InputTag >( "src" ),
                         config.getParameter< edm::InputTag >( "bsSrc" ) );
 }

KalmanAlignmentTrackRefitter::~KalmanAlignmentTrackRefitter ( void )

Destructor.

Definition at line 38 of file KalmanAlignmentTrackRefitter.cc.

38 {}

Member Function Documentation

void KalmanAlignmentTrackRefitter::debugTrackData	(	const std::string	identifier,
		const Trajectory *	traj,
		const reco::Track *	track,
		const reco::BeamSpot *	bs
	)

private

Definition at line 354 of file KalmanAlignmentTrackRefitter.cc.

References reco::TrackBase::chi2(), reco::TrackBase::dxy(), reco::TrackBase::dz(), alignCSCRings::e, reco::TrackBase::eta(), KalmanAlignmentDataCollector::fillHistogram(), Trajectory::foundHits(), reco::TrackBase::ndof(), reco::TrackBase::normalizedChi2(), reco::TrackBase::phi(), reco::BeamSpot::position(), reco::TrackBase::pt(), and reco::btau::trackChi2.

Referenced by refitTracks().

 {
   unsigned int ndof = static_cast<unsigned int>( track->ndof() );
   double trackChi2 = track->chi2();
   if ( ( trackChi2 > 0. ) && ( ndof > 0 ) )
   {
     GENFUNCTION cumulativeChi2 = Genfun::CumulativeChiSquare( ndof );
     KalmanAlignmentDataCollector::fillHistogram( identifier + string("_CumChi2"), 1. - cumulativeChi2( trackChi2 ) );
   } else if ( ndof == 0 ) {
     KalmanAlignmentDataCollector::fillHistogram( identifier + string("_CumChi2"), -1. );
   } else {
     KalmanAlignmentDataCollector::fillHistogram( identifier + string("_CumChi2"), -2. );
   }
 
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_NHits"), traj->foundHits() );
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_Pt"), 1e-2*track->pt() );
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_Eta"), track->eta() );
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_Phi"), track->phi() );
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_NormChi2"), track->normalizedChi2() );
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_DZ"), track->dz() );
 
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_DXY_BS"), fabs( track->dxy( bs->position() ) ) );
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_DXY"), fabs( track->dxy() ) );
   //KalmanAlignmentDataCollector::fillHistogram( identifier + string("_D0"), fabs( track->d0() ) );
 }

virtual void KalmanAlignmentTrackRefitter::produce	(	edm::Event &	,
		const edm::EventSetup &
	)

inlinevirtual

Dummy implementation, due to inheritance from TrackProducerBase.

Implements TrackProducerBase< reco::Track >.

Definition at line 61 of file KalmanAlignmentTrackRefitter.h.

Referenced by JSONExport.JsonExport::export(), HTMLExport.HTMLExport::export(), and HTMLExport.HTMLExportStatic::export().

61 {}

KalmanAlignmentTrackRefitter::TrajTrackPairCollection KalmanAlignmentTrackRefitter::refitSingleTracklet	(	const TrackingGeometry *	geometry,
		const MagneticField *	magneticField,
		const TrajectoryFitter *	fitter,
		const Propagator *	propagator,
		const TransientTrackingRecHitBuilder *	recHitBuilder,
		const reco::TransientTrack &	originalTrack,
		RecHitContainer &	recHits,
		const reco::BeamSpot *	beamSpot,
		const SortingDirection &	sortingDir,
		bool	useExternalEstimate,
		bool	reuseMomentumEstimate,
		const std::string	identifier = `std::string("RefitSingle_")`
	)

private

Definition at line 196 of file KalmanAlignmentTrackRefitter.cc.

References anyDirection, edm::OwnVector< T, P >::begin(), TransientTrackingRecHitBuilder::build(), TRecHit1DMomConstraint::build(), TrackProducerAlgorithm< T >::buildTrack(), DeDxDiscriminatorTools::charge(), alignCSCRings::e, edm::OwnVector< T, P >::end(), KalmanAlignmentDataCollector::fillHistogram(), TrajectoryStateOnSurface::globalParameters(), i, reco::TransientTrack::impactPointState(), TrajectoryStateOnSurface::isValid(), TrajectoryStateOnSurface::localError(), TrajectoryStateOnSurface::localParameters(), PV3DBase< T, PVType, FrameType >::mag(), GlobalTrajectoryParameters::momentum(), LocalTrajectoryParameters::momentum(), PV3DBase< T, PVType, FrameType >::perp(), trajectoryStateTransform::persistentState(), AnalyticalPropagator::propagate(), Propagator::propagationDirection(), TrajectoryStateOnSurface::rescaleError(), query::result, edm::OwnVector< T, P >::size(), sortRecHits(), evf::utils::state, TrajectoryStateOnSurface::surface(), and theRefitterAlgo.

Referenced by refitTracks().

 {
 
   TrajTrackPairCollection result;
 
   if ( recHits.size() < 2 ) return result;
 
   sortRecHits( recHits, recHitBuilder, sortingDir );
 
   TransientTrackingRecHit::RecHitContainer hits;
   RecHitContainer::iterator itRecHit;
   for ( itRecHit = recHits.begin(); itRecHit != recHits.end(); ++itRecHit )
     hits.push_back( recHitBuilder->build( &(*itRecHit) ) );
 
   TransientTrackingRecHit::ConstRecHitPointer firstHit = hits.front();
 
   AnalyticalPropagator firstStatePropagator( magneticField, anyDirection );
   TrajectoryStateOnSurface firstState = firstStatePropagator.propagate( fullTrack.impactPointState(), firstHit->det()->surface() );
 
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_IPPt"), 
                            1e-2*fullTrack.impactPointState().globalParameters().momentum().perp() );
 
   if ( !firstState.isValid() ) return result;
 
 //   LocalTrajectoryError startError;
 
 //   const double startErrorValue = 100;
 //   const unsigned int nTrajParam = 5;
 
 //   if ( useExternalEstimate ) {
 //     startError = firstState.localError();
 //   } else {
 //     if ( reuseMomentumEstimate )
 //     {
 //       AlgebraicSymMatrix firstStateError( asHepMatrix( firstState.localError().matrix() ) );
 //       AlgebraicSymMatrix startErrorMatrix( nTrajParam, 0 );
 //       startErrorMatrix[0][0] = 1e-10;
 //       //startErrorMatrix[0][0] = firstStateError[0][0];
 //       startErrorMatrix[1][1] = startErrorValue;//firstStateError[1][1];
 //       startErrorMatrix[2][2] = startErrorValue;//firstStateError[2][2];
 //       startErrorMatrix[3][3] = startErrorValue;
 //       startErrorMatrix[4][4] = startErrorValue;
 //       startError = LocalTrajectoryError( startErrorMatrix );
 //     } else {
 //       AlgebraicSymMatrix startErrorMatrix( startErrorValue*AlgebraicSymMatrix( nTrajParam, 1 ) );
 //       startError = LocalTrajectoryError( startErrorMatrix );
 //     }
 
 //   }
 
 //   // MOMENTUM ESTIMATE FOR COSMICS. P = 1.5 GeV
 //   LocalTrajectoryParameters firstStateParameters = firstState.localParameters();
 //   AlgebraicVector firstStateParamVec = asHepVector( firstStateParameters.mixedFormatVector() );
 //   firstStateParamVec[0] = 1./1.5;
 //   LocalTrajectoryParameters cosmicsStateParameters( firstStateParamVec, firstStateParameters.pzSign(), true );
 //   TrajectoryStateOnSurface tsos( cosmicsStateParameters, startError, firstState.surface(), magneticField );
 
   KalmanAlignmentDataCollector::fillHistogram( identifier + string("_FSPt"),
                            1e-2*firstState.globalParameters().momentum().perp() );
 
   firstState.rescaleError( 100 );
   TrajectoryStateOnSurface tsos( firstState.localParameters(), firstState.localError(),
                  firstState.surface(), magneticField );
 
   // Generate a trajectory seed.
   TrajectorySeed seed( PTrajectoryStateOnDet(), recHits, propagator->propagationDirection() );
 
   // Generate track candidate.
   
   PTrajectoryStateOnDet state = trajectoryStateTransform::persistentState( tsos, firstHit->det()->geographicalId().rawId() );
   TrackCandidate candidate( recHits, seed, state );
 
   AlgoProductCollection algoResult;
 
   int charge = static_cast<int>( tsos.charge() );
   double momentum = firstState.localParameters().momentum().mag();
   TransientTrackingRecHit::RecHitPointer testhit =
     TRecHit1DMomConstraint::build( charge, momentum, 1e-10, &tsos.surface() );
 
   //no insert in OwnVector...
   TransientTrackingRecHit::RecHitContainer tmpHits;
   tmpHits.push_back(testhit);
   for (TransientTrackingRecHit::RecHitContainer::const_iterator i=hits.begin(); i!=hits.end(); i++){
     tmpHits.push_back(*i);
   }
   hits.swap(tmpHits);
 
   theRefitterAlgo.buildTrack( fitter, propagator, algoResult, hits, tsos, seed, 0, *beamSpot, candidate.seedRef());
 
   for ( AlgoProductCollection::iterator it = algoResult.begin(); it != algoResult.end(); ++it )
     result.push_back( make_pair( (*it).first, (*it).second.first ) );
 
   return result;
 }

KalmanAlignmentTrackRefitter::TrackletCollection KalmanAlignmentTrackRefitter::refitTracks	(	const edm::EventSetup &	eventSetup,
		const AlignmentSetupCollection &	algoSetups,
		const ConstTrajTrackPairCollection &	tracks,
		const reco::BeamSpot *	beamSpot
	)

Definition at line 42 of file KalmanAlignmentTrackRefitter.cc.

References AlignableNavigator::alignableFromDetId(), anyDirection, SiPixelRawToDigiRegional_cfi::beamSpot, debugTrackData(), edm::OwnVector< T, P >::empty(), TrackProducerBase< reco::Track >::getFromES(), edm::ESHandle< class >::product(), edm::OwnVector< T, P >::push_back(), refitSingleTracklet(), rejectTrack(), query::result, edm::OwnVector< T, P >::size(), theDebugFlag, theNavigator, and funct::true.

Referenced by KalmanAlignmentAlgorithm::run().

 {
   // Retrieve what we need from the EventSetup
   edm::ESHandle< TrackerGeometry > aGeometry;
   edm::ESHandle< MagneticField > aMagneticField;
   edm::ESHandle< TrajectoryFitter > aTrajectoryFitter;
   edm::ESHandle< Propagator > aPropagator;
   edm::ESHandle<MeasurementTracker> theMeasTk;
   edm::ESHandle< TransientTrackingRecHitBuilder > aRecHitBuilder;
 
   getFromES( setup, aGeometry, aMagneticField, aTrajectoryFitter, aPropagator, theMeasTk, aRecHitBuilder );
 
   TrackletCollection result;
   TrackCollection fullTracks;
 
   ConstTrajTrackPairCollection refittedFullTracks;
   ConstTrajTrackPairCollection::const_iterator itTrack;
 
   for( itTrack = tracks.begin(); itTrack != tracks.end(); ++itTrack )
   {
     TransientTrack fullTrack( *(*itTrack).second, aMagneticField.product() );
 
     AlignmentSetupCollection::const_iterator itSetup;
     for ( itSetup = algoSetups.begin(); itSetup != algoSetups.end(); ++itSetup )
     {
       RecHitContainer trackingRecHits;
       RecHitContainer externalTrackingRecHits;
 
       RecHitContainer zPlusRecHits;
       RecHitContainer zMinusRecHits;
 
       // Extract collection with TrackingRecHits
       Trajectory::ConstRecHitContainer hits = (*itTrack).first->recHits();
       Trajectory::ConstRecHitContainer::iterator itHits;
 
       for ( itHits = hits.begin(); itHits != hits.end(); ++itHits )
       {
     if ( !(*itHits)->isValid() ) continue;
 
     try
     {
       //if ( !theNavigator->alignableFromDetId( (*itHits)->geographicalId() )->alignmentParameters() ) continue;
       theNavigator->alignableFromDetId( (*itHits)->geographicalId() );    
     } catch(...) { continue; }
 
     if ( (*itSetup)->useForTracking( *itHits ) )
     {
       trackingRecHits.push_back( (*itHits)->hit()->clone() );
 
       ( (*itHits)->det()->position().z() > 0. ) ?
         zPlusRecHits.push_back( (*itHits)->hit()->clone() ) :
         zMinusRecHits.push_back( (*itHits)->hit()->clone() );
 
     }
     else if ( (*itSetup)->useForExternalTracking( *itHits ) )
     {
       externalTrackingRecHits.push_back( (*itHits)->hit()->clone() );
     }
       }
 
       //edm::LogInfo( "KalmanAlignmentTrackRefitter" ) << "Hits for tracking/external: " << trackingRecHits.size() << "/" << externalTrackingRecHits.size();
 
       //if ( !zPlusRecHits.size() || !zMinusRecHits.size() ) continue;
 
       if ( trackingRecHits.empty() ) continue;
 
       if ( externalTrackingRecHits.empty() )
       {
     if ( ( (*itSetup)->getExternalTrackingSubDetIds().size() == 0 ) && // O.K., no external hits expected,
          ( trackingRecHits.size() >= (*itSetup)->minTrackingHits() ) )
     {
       TrajTrackPairCollection refitted = refitSingleTracklet( aGeometry.product(), aMagneticField.product(),
                                   (*itSetup)->fitter(), (*itSetup)->propagator(), 
                                   aRecHitBuilder.product(), fullTrack,
                                   trackingRecHits, beamSpot,
                                   (*itSetup)->sortingDirection(), false, true );
 
       // The refitting did not work ... Try next!
       if ( refitted.empty() ) continue;
       if ( rejectTrack( refitted.front().second ) ) continue;
 
       if ( theDebugFlag )
       {
         debugTrackData( (*itSetup)->id(), refitted.front().first, refitted.front().second, beamSpot );
         debugTrackData( "OrigFullTrack", (*itTrack).first, (*itTrack).second, beamSpot );
       }
 
 
       TrackletPtr trackletPtr( new KalmanAlignmentTracklet( refitted.front(), *itSetup ) );
       result.push_back( trackletPtr );
     }
     else { continue; } // Expected external hits but found none or not enough hits.
       }
       else if ( ( trackingRecHits.size() >= (*itSetup)->minTrackingHits() ) &&
         ( externalTrackingRecHits.size() >= (*itSetup)->minExternalHits() ) ) 
       {
     // Create an instance of KalmanAlignmentTracklet with an external prediction.
 
     TrajTrackPairCollection external = refitSingleTracklet( aGeometry.product(), aMagneticField.product(),
                                 (*itSetup)->externalFitter(), (*itSetup)->externalPropagator(),
                                 aRecHitBuilder.product(), fullTrack,
                                 externalTrackingRecHits, beamSpot,
                                 (*itSetup)->externalSortingDirection(),
                                 false, true );
     //if ( external.empty() || rejectTrack( external.front().second ) ) { continue; }
     if ( external.empty() ) { continue; }
 
     TransientTrack externalTrack( *external.front().second, aMagneticField.product() );
 
     TrajTrackPairCollection refitted = refitSingleTracklet( aGeometry.product(), aMagneticField.product(),
                                 (*itSetup)->fitter(), (*itSetup)->propagator(),
                                 aRecHitBuilder.product(), externalTrack,
                                 trackingRecHits, beamSpot,
                                 (*itSetup)->sortingDirection(),
                                 false, true, (*itSetup)->id() );
 
     if ( refitted.empty() ) { continue; }
     if ( rejectTrack( refitted.front().second ) ) continue;
 
     //const Surface& surface = refitted.front().first->firstMeasurement().updatedState().surface();
     const Surface& surface = refitted.front().first->lastMeasurement().updatedState().surface();
     TrajectoryStateOnSurface externalTsos = externalTrack.impactPointState();
     AnalyticalPropagator externalPredictionPropagator( aMagneticField.product(), anyDirection );
     TrajectoryStateOnSurface externalPrediction = externalPredictionPropagator.propagate( externalTsos, surface );
     if ( !externalPrediction.isValid() ) continue;
 
     if ( theDebugFlag )
     {
       debugTrackData( string("External") + (*itSetup)->id(), external.front().first, external.front().second, beamSpot );
       debugTrackData( (*itSetup)->id(), refitted.front().first, refitted.front().second, beamSpot );
       debugTrackData( "OrigFullTrack", (*itTrack).first, (*itTrack).second, beamSpot );
     }
 
     TrackletPtr trackletPtr( new KalmanAlignmentTracklet( refitted.front(), externalPrediction, *itSetup ) );
     result.push_back( trackletPtr );
 
     delete external.front().first;
     delete external.front().second;
       }
     }
   }
 
   return result;
 }

bool KalmanAlignmentTrackRefitter::rejectTrack ( const reco::Track * track ) const

private

Definition at line 338 of file KalmanAlignmentTrackRefitter.cc.

References reco::TrackBase::chi2(), reco::TrackBase::ndof(), and reco::btau::trackChi2.

Referenced by refitTracks().

 {
   double trackChi2 = track->chi2();
   unsigned int ndof = static_cast<unsigned int>( track->ndof() );
   if ( trackChi2 <= 0. || ndof <= 0 ) return false;
 
   //FIXME: should be configurable (via KalmanAlignmentSetup)
   double minChi2Prob = 0;//1e-6;
   double maxChi2Prob = 1.0;
 
   GENFUNCTION cumulativeChi2 = Genfun::CumulativeChiSquare( ndof );
   double chi2Prob = 1. - cumulativeChi2( trackChi2 );
   return ( chi2Prob < minChi2Prob ) || ( chi2Prob > maxChi2Prob ); 
 }

void KalmanAlignmentTrackRefitter::sortRecHits	(	RecHitContainer &	hits,
		const TransientTrackingRecHitBuilder *	builder,
		const SortingDirection &	sortingDir
	)		const

private

Definition at line 303 of file KalmanAlignmentTrackRefitter.cc.

References edm::OwnVector< T, P >::back(), edm::OwnVector< T, P >::begin(), TransientTrackingRecHitBuilder::build(), edm::OwnVector< T, P >::end(), edm::OwnVector< T, P >::front(), insideOut, mag(), edm::OwnVector< T, P >::push_back(), edm::OwnVector< T, P >::size(), KalmanAlignmentSetup::sortDownsideUp, KalmanAlignmentSetup::sortInsideOut, KalmanAlignmentSetup::sortOutsideIn, KalmanAlignmentSetup::sortUpsideDown, edm::OwnVector< T, P >::swap(), tmp, and detailsBasic3DVector::y.

Referenced by refitSingleTracklet().

 {
   // Don't start sorting if there is only 1 or even 0 elements.
   if ( hits.size() < 2 ) return;
 
   TransientTrackingRecHit::RecHitPointer firstHit = builder->build( &hits.front() );
   double firstRadius = firstHit->det()->surface().toGlobal( firstHit->localPosition() ).mag();
   double firstY = firstHit->det()->surface().toGlobal( firstHit->localPosition() ).y();
 
   TransientTrackingRecHit::RecHitPointer lastHit = builder->build( &hits.back() );
   double lastRadius = lastHit->det()->surface().toGlobal( lastHit->localPosition() ).mag();
   double lastY = lastHit->det()->surface().toGlobal( lastHit->localPosition() ).y();
 
   bool insideOut = firstRadius < lastRadius;
   bool upsideDown = lastY < firstY;
 
   if ( ( insideOut && ( sortingDir == KalmanAlignmentSetup::sortInsideOut ) ) ||
        ( !insideOut && ( sortingDir == KalmanAlignmentSetup::sortOutsideIn ) ) ||
        ( upsideDown && ( sortingDir == KalmanAlignmentSetup::sortUpsideDown ) ) ||
        ( !upsideDown && ( sortingDir == KalmanAlignmentSetup::sortDownsideUp ) ) ) return;
 
   // Fill temporary container with reversed hits.
   RecHitContainer tmp;
   RecHitContainer::iterator itHit = hits.end();
   do { --itHit; tmp.push_back( ( *itHit ).clone() ); } while ( itHit != hits.begin() );
 
   // Swap the content of the temporary and the input container.
   hits.swap( tmp );
 
   return;
 }