Trajectory Class Reference

#include <Trajectory.h>

Public Types
typedef TransientTrackingRecHit::ConstRecHitContainer	ConstRecHitContainer
typedef std::vector < TrajectoryMeasurement >	DataContainer
typedef ConstRecHitContainer	RecHitContainer

Public Member Functions
double	chiSquared () const
TrajectoryMeasurement const &	closestMeasurement (GlobalPoint) const
DataContainer const &	data () const
	obsolete name, use measurements() instead. More...
PropagationDirection const &	direction () const
float	dPhiCacheForLoopersReconstruction () const
bool	empty () const
	True if trajectory has no measurements. More...
TrajectoryMeasurement const &	firstMeasurement () const
int	foundHits () const
TrajectoryStateOnSurface	geometricalInnermostState () const
void	incrementLoops ()
void	invalidate ()
	Method to invalidate a trajectory. Useful during ambiguity resolution. More...
bool	isLooper () const
bool	isValid () const
const DetLayer *	lastLayer () const
	Redundant method, returns the layer of lastMeasurement() . More...
TrajectoryMeasurement const &	lastMeasurement () const
int	lostHits () const
DataContainer const &	measurements () const
int	ndof (bool bon=true) const
signed char	nLoops () const
void	pop ()
void	push (const TrajectoryMeasurement &tm)
void	push (const TrajectoryMeasurement &tm, double chi2Increment)
ConstRecHitContainer	recHits (bool splitting=false) const
void	recHitsV (ConstRecHitContainer &cont, bool splitting=false) const
void	reserve (unsigned int n)
void	reverse ()
TrajectorySeed const &	seed () const
	Access to the seed used to reconstruct the Trajectory. More...
edm::RefToBase< TrajectorySeed >	seedRef (void) const
void	setDPhiCacheForLoopersReconstruction (float dphi)
void	setNLoops (signed char value)
void	setSeedRef (const edm::RefToBase< TrajectorySeed > &seedRef)
const boost::shared_ptr< const TrajectorySeed > &	sharedSeed () const
	Trajectory ()
	Trajectory (const TrajectorySeed &seed)
	Trajectory (const TrajectorySeed &seed, PropagationDirection dir)
	Trajectory (const boost::shared_ptr< const TrajectorySeed > &seed, PropagationDirection dir)
void	validRecHits (ConstRecHitContainer &cont) const

Static Public Member Functions
static bool	inactive ()
static bool	isBad (const TransientTrackingRecHit &hit)
static bool	lost (const TransientTrackingRecHit &hit)

Private Member Functions
void	check () const

Private Attributes
edm::RefToBase< TrajectorySeed >	seedRef_
float	theChiSquared
float	theChiSquaredBad
DataContainer	theData
PropagationDirection	theDirection
bool	theDirectionValidity
float	theDPhiCache
signed char	theNLoops
signed short	theNumberOfFoundHits
signed short	theNumberOfLostHits
boost::shared_ptr< const TrajectorySeed >	theSeed
bool	theValid

Detailed Description

A class for detailed particle trajectory representation. It is used during trajectory building to "grow" a trajectory. The trajectory is represented as an ordered sequence of TrajectoryMeasurement objects with a stack-like interface. The measurements are added to the Trajectory in the order of increasing precision: each new TrajectoryMeasurement is assumed to improve the precision of the last one, normally by adding a constraint from a new RecHit. However the Trajectory class does not have the means to verify that measurements are added in the correct order, and thus cannot guarantee the order, which is the responsibility of the TrajectoryBuilder. The Trajectory provides some security by allowing to add or remove measurements only on one of it's ends, with push(TM) and pop() methods. The last measurement in a Trajectory can thus be either the innermost (closest to the interaction point) or the outermost, depending on the way the Trajectory was built. The direction of building is represented as a PropagationDirection, which has two possible values: alongMomentum (outwards) and oppositeToMomentum (inwards), and is accessed with the direction() method.

Definition at line 38 of file Trajectory.h.

Member Typedef Documentation

typedef TransientTrackingRecHit::ConstRecHitContainer Trajectory::ConstRecHitContainer

Definition at line 43 of file Trajectory.h.

typedef std::vector<TrajectoryMeasurement> Trajectory::DataContainer

Definition at line 42 of file Trajectory.h.

typedef ConstRecHitContainer Trajectory::RecHitContainer

Definition at line 44 of file Trajectory.h.

Constructor & Destructor Documentation

Trajectory::Trajectory ( )

inline

Default constructor of an empty trajectory with undefined seed and undefined direction. This constructor is necessary in order to transiently copy vector<Trajectory> in the edm::Event

Definition at line 52 of file Trajectory.h.

               : 
    theSeed(), seedRef_(),
    theChiSquared(0), theChiSquaredBad(0),
    theNumberOfFoundHits(0), theNumberOfLostHits(0),
    theDirection(alongMomentum), theDirectionValidity(false), theValid(true),theDPhiCache(0),theNLoops(0)
    {}

Trajectory::Trajectory ( const TrajectorySeed &  seed )

inline

Constructor of an empty trajectory with undefined direction. The direction will be defined at the moment of the push of a second measurement, from the relative radii of the first and second measurements.

Definition at line 66 of file Trajectory.h.

                                          : 
    theSeed( new TrajectorySeed(seed) ), seedRef_(),
    theChiSquared(0), theChiSquaredBad(0),
    theNumberOfFoundHits(0), theNumberOfLostHits(0),
    theDirection(alongMomentum), theDirectionValidity(false), theValid(true),theDPhiCache(0),theNLoops(0)
  {}

Trajectory::Trajectory ( const TrajectorySeed &  seed, PropagationDirection  dir  )

inline

Constructor of an empty trajectory with defined direction. No check is made in the push method that measurements are added in the correct direction.

Definition at line 77 of file Trajectory.h.

                                                                    : 
    theSeed( new TrajectorySeed(seed) ), seedRef_(),
    theChiSquared(0), theChiSquaredBad(0),
    theNumberOfFoundHits(0), theNumberOfLostHits(0),
    theDirection(dir), theDirectionValidity(true), theValid(true),theDPhiCache(0),theNLoops(0)
   
  {}

Trajectory::Trajectory ( const boost::shared_ptr< const TrajectorySeed > &  seed, PropagationDirection  dir  )

inline

Constructor of an empty trajectory with defined direction. No check is made in the push method that measurements are added in the correct direction.

Definition at line 89 of file Trajectory.h.

                                                                                            : 
    theSeed( seed ), seedRef_(),
    theChiSquared(0), theChiSquaredBad(0),
    theNumberOfFoundHits(0), theNumberOfLostHits(0),
    theDirection(dir), theDirectionValidity(true), theValid(true),theDPhiCache(0),theNLoops(0)
  {}

Member Function Documentation

void Trajectory::check ( void  ) const

private

Definition at line 200 of file Trajectory.cc.

Referenced by firstMeasurement(), lastLayer(), and lastMeasurement().

                             {
  if ( theData.empty()) 
    throw cms::Exception("TrackingTools/PatternTools","Trajectory::check() - information requested from empty Trajectory");
}

double Trajectory::chiSquared ( ) const

inline

• Trajectories with at least 1 valid hit: value of the raw Chi2 of the trajectory, not normalised to the N.D.F. (evaluated using only valid hits)
• Trajectories with only invalid hits: raw Chi2 (not norm.) of invalid hits w.r.t. the "default" trajectory (traj. containing only the seed information)

Definition at line 242 of file Trajectory.h.

References theChiSquared, theChiSquaredBad, and theNumberOfFoundHits.

Referenced by CosmicTrajectoryBuilder::AddHit(), CRackTrajectoryBuilder::AddHit(), SiStripGainFromData::algoAnalyze(), SiPixelLorentzAngle::analyze(), TrackProducerAlgorithm< reco::GsfTrack >::buildTrack(), TrackProducerAlgorithm< reco::Track >::buildTrack(), MuonTrackLoader::buildTrackAtPCA(), KFFittingSmoother::checkForNans(), GlobalTrackerMuonAlignment::debugTrajectory(), AlignmentMonitorTracksFromTrajectories::event(), cms::CompareTrajLay::operator()(), cms::CompareTrajChi::operator()(), ConversionTrackFinder::ExtractChi2::operator()(), GroupedTrajCandLess::score(), GlobalTrackQualityProducer::trackProbability(), GlobalTrajectoryBuilderBase::trackProbability(), and CosmicMuonTrajectoryBuilder::trajectories().

{ return (theNumberOfFoundHits ? theChiSquared : theChiSquaredBad);}

TrajectoryMeasurement const & Trajectory::closestMeasurement

(

GlobalPoint

point

)

const

Definition at line 269 of file Trajectory.cc.

References begin, CastorDataFrameFilter_impl::check(), and end.

Referenced by TrackProducerAlgorithm< reco::Track >::buildTrack(), TrackProducerAlgorithm< reco::GsfTrack >::buildTrack(), and ConversionSeedFilter::getTSOS().

                                                                                    {
  check();
  vector<TrajectoryMeasurement>::const_iterator iter = std::min_element(measurements().begin(), measurements().end(), LessMag(point) );

  return (*iter);
}

DataContainer const& Trajectory::data ( ) const

inline

obsolete name, use measurements() instead.

Definition at line 205 of file Trajectory.h.

References measurements().

Referenced by HICMeasurementEstimator::setCuts().

{ return measurements();}

PropagationDirection const & Trajectory::direction

(

)

const

Direction of "growing" of the trajectory. Possible values are alongMomentum (outwards) and oppositeToMomentum (inwards).

Definition at line 195 of file Trajectory.cc.

References edm::hlt::Exception.

Referenced by PFTrackTransformer::addPoints(), PFTrackTransformer::addPointsAndBrems(), CkfDebugger::analyseRecHitNotFound(), GroupedCkfTrajectoryBuilder::backwardFit(), FWTrackProxyBuilderFF::buildTrack(), TrackProducerAlgorithm< reco::Track >::buildTrack(), TrackProducerAlgorithm< reco::GsfTrack >::buildTrack(), MuonTrackLoader::buildTrackExtra(), MuonRoadTrajectoryBuilder::cleanTrajectory(), GlobalTrackerMuonAlignment::debugTrajectory(), KFSplittingFitter::fit(), NuclearTrackCorrector::getNewTrackExtra(), TransientInitialStateEstimator::innerState(), CRackTrajectoryBuilder::innerState(), ConversionHitChecker::nHitsBeforeVtx(), TrajectoryFactoryBase::orderedTrajectoryMeasurements(), KfTrackProducerBase::putInEvt(), GsfTrackProducerBase::putInEvt(), TrackProducerWithSCAssociation::putInEvt(), HICTrajectoryBuilder::qualityFilter(), CosmicMuonTrajectoryBuilder::reverseTrajectoryPropagationDirection(), NuclearInteractionFinder::run(), sortTrajectoryMeasurements(), GsfTrajectorySmoother::trajectories(), CosmicMuonTrajectoryBuilder::trajectories(), KFTrajectorySmoother::trajectories(), and trajectoryToResiduals().

                                                         {
  if (theDirectionValidity) return theDirection;
  else throw cms::Exception("TrackingTools/PatternTools","Trajectory::direction() requested but not set");
}

float Trajectory::dPhiCacheForLoopersReconstruction ( ) const

inline

accessor to the delta phi angle betweem the directions of the two measurements on the last two layers crossed by the trajectory

Definition at line 312 of file Trajectory.h.

References theDPhiCache.

Referenced by GroupedTrajCandLess::score().

{ return theDPhiCache;}

bool Trajectory::empty ( void  ) const

inline

True if trajectory has no measurements.

Definition at line 234 of file Trajectory.h.

References theData.

Referenced by BaseCkfTrajectoryBuilder::addToResult(), CosmicMuonTrajectoryBuilder::build(), CosmicMuonTrajectoryBuilder::buildSecondHalf(), GsfTrajectoryFitter::fit(), KFSplittingFitter::fit(), CosmicMuonSmoother::fit(), KFTrajectoryFitter::fit(), CosmicMuonSmoother::initialState(), CosmicMuonTrajectoryBuilder::reverseTrajectoryPropagationDirection(), NuclearInteractionFinder::run(), CosmicMuonTrajectoryBuilder::selfDuplicate(), CosmicMuonSmoother::smooth(), StandAloneMuonTrajectoryBuilder::trajectories(), GsfTrajectorySmoother::trajectories(), CosmicMuonTrajectoryBuilder::trajectories(), and KFTrajectorySmoother::trajectories().

{ return theData.empty();}

TrajectoryMeasurement const& Trajectory::firstMeasurement ( ) const

inline

Access to the first measurement. It is the least precise one in a trajectory before smoothing. It is precise in a smoothed trajectory. It's the innermost measurement if direction() == alongMomentum, the outermost one if direction() == oppositeToMomentum.

Definition at line 194 of file Trajectory.h.

References check(), edm::hlt::Exception, and theData.

Referenced by CosmicTrajectoryBuilder::AddHit(), CkfDebugger::analyseCompatibleMeasurements(), GroupedCkfTrajectoryBuilder::backwardFit(), CosmicMuonTrajectoryBuilder::build(), CosmicMuonTrajectoryBuilder::buildSecondHalf(), TrackProducerAlgorithm< reco::Track >::buildTrack(), TrackProducerAlgorithm< reco::GsfTrack >::buildTrack(), MuonTrackLoader::buildTrackExtra(), GlobalTrackerMuonAlignment::debugTrajectory(), CosmicMuonTrajectoryBuilder::estimateDirection(), GsfTrajectoryFitter::fit(), KFSplittingFitter::fit(), KFTrajectoryFitter::fit(), NuclearTrackCorrector::getNewTrackExtra(), CosmicMuonSmoother::initialState(), TransientInitialStateEstimator::innerState(), TrackerToMuonPropagator::produce(), KfTrackProducerBase::putInEvt(), GsfTrackProducerBase::putInEvt(), TrackProducerWithSCAssociation::putInEvt(), HICTrajectoryBuilder::qualityFilter(), CosmicMuonTrajectoryBuilder::reverseTrajectory(), CRackTrajectoryBuilder::run(), and CosmicMuonTrajectoryBuilder::trajectories().

                                                         {
    check(); 
    if (theData.front().recHit()->hit()!=0) return theData.front();
    else if (theData.size()>2) return *(theData.begin()+1);
    else throw cms::Exception("TrajectoryMeasurement::firstMeasurement - Too few measurements in trajectory");
  }

int Trajectory::foundHits ( ) const

inline

Number of valid RecHits used to determine the trajectory. Can be less than the number of measurements in data() since detector layers crossed without using RecHits from them are also stored as measurements.

Definition at line 224 of file Trajectory.h.

References theNumberOfFoundHits.

Referenced by CosmicTrajectoryBuilder::AddHit(), BaseCkfTrajectoryBuilder::addToResult(), SiStripGainFromData::algoAnalyze(), KalmanAlignmentTrackRefitter::debugTrackData(), GlobalTrackerMuonAlignment::debugTrajectory(), GsfTrajectoryFitter::fit(), KFTrajectoryFitter::fit(), MuonRoadTrajectoryBuilder::GatherHits(), CRackTrajectoryBuilder::innerState(), TrajectoryLessByFoundHits::operator()(), cms::CompareTrajLay::operator()(), cms::CompareTrajChi::operator()(), ConversionTrackFinder::ExtractNumOfHits::operator()(), MinPtTrajectoryFilter::qualityFilter(), ThresholdPtTrajectoryFilter::qualityFilter(), CosmicTrajectoryBuilder::qualityFilter(), CRackTrajectoryBuilder::qualityFilter(), NuclearInteractionFinder::run(), CRackTrajectoryBuilder::run(), GroupedTrajCandLess::score(), MinPtTrajectoryFilter::toBeContinued(), ThresholdPtTrajectoryFilter::toBeContinued(), StandAloneMuonTrajectoryBuilder::trajectories(), and KFTrajectorySmoother::trajectories().

{ return theNumberOfFoundHits;}

TrajectoryStateOnSurface Trajectory::geometricalInnermostState

(

)

const

Definition at line 232 of file Trajectory.cc.

References CastorDataFrameFilter_impl::check(), dot(), mag(), and perp().

Referenced by MuonTrackLoader::buildTrackAtPCA().

                                                                     {

  check();

  //if trajectory is in one half, return the end closer to origin point
  if ( firstMeasurement().updatedState().globalMomentum().perp() > 1.0
      && ( firstMeasurement().updatedState().globalPosition().basicVector().dot( firstMeasurement().updatedState().globalMomentum().basicVector() ) *
       lastMeasurement().updatedState().globalPosition().basicVector().dot( lastMeasurement().updatedState().globalMomentum().basicVector() )  > 0 ) ) {
     return (firstMeasurement().updatedState().globalPosition().mag() < lastMeasurement().updatedState().globalPosition().mag() ) ?
            firstMeasurement().updatedState() : lastMeasurement().updatedState();
  }

  //more complicated in case of traversing and low-pt trajectories with loops
  return closestMeasurement(GlobalPoint(0.0,0.0,0.0)).updatedState();

}

static bool Trajectory::inactive ( )

inlinestatic

Definition of inactive Det from the Trajectory point of view.

Definition at line 270 of file Trajectory.h.

                {return false;}//FIXME

void Trajectory::incrementLoops ( )

inline

Definition at line 322 of file Trajectory.h.

References theNLoops.

{theNLoops++;}

void Trajectory::invalidate ( )

inline

Method to invalidate a trajectory. Useful during ambiguity resolution.

Definition at line 262 of file Trajectory.h.

References theValid.

Referenced by TrajectoryCleanerBySharedHits::clean().

{ theValid = false;}

bool Trajectory::isBad ( const TransientTrackingRecHit &  hit )

static

Returns true if the hit type is TrackingRecHit::bad Used in stand-alone trajectory construction

Definition at line 221 of file Trajectory.cc.

References TrackingRecHit::bad, TrackingRecHit::geographicalId(), TrackingRecHit::getType(), TrackingRecHit::isValid(), and DetId::rawId().

{
  if ( hit.isValid()) return false;
  else {
    if(hit.geographicalId().rawId() == 0) {return false;}
    else{
      return hit.getType() == TrackingRecHit::bad;
    }
  }
}

bool Trajectory::isLooper ( ) const

inline

Definition at line 318 of file Trajectory.h.

References theNLoops.

{ return (theNLoops>0);}

bool Trajectory::isValid ( void  ) const

inline

Returns true if the Trajectory is valid. Trajectories are invalidated e.g. during ambiguity resolution.

Definition at line 259 of file Trajectory.h.

References theValid.

Referenced by GlobalTrackerMuonAlignment::debugTrajectory(), KFFittingSmoother::fit(), cms::CkfTrackCandidateMakerBase::produceBase(), ChargeSignificanceTrajectoryFilter::qualityFilter(), RoadSearchTrackCandidateMakerAlgorithm::run(), NuclearInteractionFinder::run(), and CosmicMuonTrajectoryBuilder::trajectories().

{ return theValid;}

const DetLayer* Trajectory::lastLayer ( ) const

inline

Redundant method, returns the layer of lastMeasurement() .

Definition at line 284 of file Trajectory.h.

References check(), edm::hlt::Exception, and theData.

Referenced by CkfDebugger::analyseRecHitNotFound().

                                    {
    check();
    if (theData.back().recHit()->hit()!=0) return theData.back().layer();
    else if (theData.size()>2) return (theData.end()-2)->layer();
    else throw cms::Exception("TrajectoryMeasurement::lastMeasurement - Too few measurements in trajectory");
  }

TrajectoryMeasurement const& Trajectory::lastMeasurement ( ) const

inline

Access to the last measurement. It's the most precise one in a trajectory before smoothing. It's the outermost measurement if direction() == alongMomentum, the innermost one if direction() == oppositeToMomentum.

Definition at line 181 of file Trajectory.h.

References check(), edm::hlt::Exception, and theData.

Referenced by CosmicTrajectoryBuilder::AddHit(), CRackTrajectoryBuilder::AddHit(), BaseCkfTrajectoryBuilder::addToResult(), CkfDebugger::analyseCompatibleMeasurements(), CkfDebugger::analyseRecHitNotFound(), CosmicMuonTrajectoryBuilder::build(), CosmicMuonTrajectoryBuilder::buildSecondHalf(), TrackProducerAlgorithm< reco::Track >::buildTrack(), TrackProducerAlgorithm< reco::GsfTrack >::buildTrack(), MuonTrackLoader::buildTrackExtra(), GlobalTrackerMuonAlignment::debugTrajectory(), CosmicMuonTrajectoryBuilder::estimateDirection(), HICTrajectoryBuilder::findCompatibleMeasurements(), CosmicMuonTrajectoryBuilder::flipTrajectory(), NuclearTrackCorrector::getNewTrackExtra(), CosmicMuonSmoother::initialState(), CkfDebugger::nextCorrectHits(), RoadSearchTrackCandidateMakerAlgorithm::PrepareTrackCandidates(), KfTrackProducerBase::putInEvt(), GsfTrackProducerBase::putInEvt(), TrackProducerWithSCAssociation::putInEvt(), MinPtTrajectoryFilter::qualityFilter(), ThresholdPtTrajectoryFilter::qualityFilter(), HICTrajectoryBuilder::qualityFilter(), CosmicMuonTrajectoryBuilder::reverseTrajectory(), RoadSearchTrackCandidateMakerAlgorithm::run(), StandAloneMuonRefitter::singleRefit(), CRackTrajectoryBuilder::SortHits(), MinPtTrajectoryFilter::toBeContinued(), ThresholdPtTrajectoryFilter::toBeContinued(), StandAloneMuonTrajectoryBuilder::trajectories(), and CosmicMuonTrajectoryBuilder::trajectories().

                                                        {
    check(); 
    if (theData.back().recHit()->hit()!=0) return theData.back();
    else if (theData.size()>2) return *(theData.end()-2);
    else throw cms::Exception("TrajectoryMeasurement::lastMeasurement - Too few measurements in trajectory");
  }

bool Trajectory::lost ( const TransientTrackingRecHit &  hit )

static

Definition of what it means for a hit to be "lost". This definition is also used by the TrajectoryBuilder.

Definition at line 205 of file Trajectory.cc.

References TrackingRecHit::geographicalId(), TrackingRecHit::getType(), TrackingRecHit::isValid(), TrackingRecHit::missing, and DetId::rawId().

Referenced by FastTrackMerger::produce(), MaxConsecLostHitsTrajectoryFilter::TBC(), and HICTrajectoryBuilder::toBeContinued().

{
  if ( hit.isValid()) return false;
  else {
  //     // A DetLayer is always inactive in this logic.
  //     // The DetLayer is the Det of an invalid RecHit only if no DetUnit 
  //     // is compatible with the predicted state, so we don't really expect
  //     // a hit in this case.
  
    if(hit.geographicalId().rawId() == 0) {return false;}
    else{
      return hit.getType() == TrackingRecHit::missing;
    }
  }
}

int Trajectory::lostHits ( ) const

inline

Number of detector layers crossed without valid RecHits. Used mainly as a criteria for abandoning a trajectory candidate during trajectory building.

Definition at line 231 of file Trajectory.h.

References theNumberOfLostHits.

Referenced by BaseCkfTrajectoryBuilder::addToResult(), TrajectoryCleanerBySharedHits::clean(), and GroupedTrajCandLess::score().

{ return theNumberOfLostHits;}

DataContainer const& Trajectory::measurements ( ) const

inline

Return all measurements in a container.

Definition at line 203 of file Trajectory.h.

References theData.

Referenced by PFTrackTransformer::addPoints(), PFTrackTransformer::addPointsAndBrems(), BaseCkfTrajectoryBuilder::addToResult(), DeDxDiscriminatorLearner::algoAnalyze(), SiStripGainFromData::algoAnalyze(), CkfDebugger::analyseCompatibleMeasurements(), SiPixelLorentzAngle::analyze(), FWTrackProxyBuilderFF::buildTrack(), KFFittingSmoother::checkForNans(), MuonRoadTrajectoryBuilder::cleanTrajectory(), MuonTrackResidualAnalyzer::computeResolution(), StandAloneMuonFilter::createDefaultTrajectory(), data(), EnergyLossPlain::estimate(), AlignmentMonitorTemplate::event(), AlignmentMonitorMuonResiduals::event(), AlignmentMonitorTracksFromTrajectories::event(), RoadSearchTrackCandidateMakerAlgorithm::extrapolateTrajectory(), TrackerValidationVariables::fillHitQuantities(), MuonKinkFinder::fillTrkKink(), DynamicTruncation::filter(), HICTrajectoryBuilder::findCompatibleMeasurements(), SiStripFineDelayTLA::findtrackangle(), CosmicMuonSmoother::fit(), TransientInitialStateEstimator::innerState(), CRackTrajectoryBuilder::innerState(), GlobalTrackQualityProducer::kink(), MuonResidualsFromTrack::MuonResidualsFromTrack(), GlobalTrackQualityProducer::newChi2(), ConversionHitChecker::nHitsBeforeVtx(), TrajectoryFactoryBase::orderedTrajectoryMeasurements(), RoadSearchTrackCandidateMakerAlgorithm::PrepareTrackCandidates(), PlotRecTracks::printRecTracks(), ShallowTrackClustersProducer::produce(), HLTTrackClusterRemover::produce(), TrackClusterRemover::produce(), TkAlCaOverlapTagger::produce(), DeDxDiscriminatorProducer::produce(), TrackClusterSplitter::produce(), ShallowGainCalibration::produce(), reco::modules::CosmicTrackSplitter::produce(), reco::modules::TrackerTrackHitFilter::produceFromTrajectory(), GsfTrackProducerBase::putInEvt(), HICTrajectoryBuilder::qualityFilter(), TrajectoryCleanerMerger::reOrderMeasurements(), CosmicMuonTrajectoryBuilder::reverseTrajectory(), CosmicMuonTrajectoryBuilder::reverseTrajectoryPropagationDirection(), MuonMillepedeAlgorithm::run(), HIPAlignmentAlgorithm::run(), MuonDTLocalMillepedeAlgorithm::run(), RoadSearchTrackCandidateMakerAlgorithm::run(), CSCOverlapsAlignmentAlgorithm::run(), NuclearInteractionFinder::run(), GlobalMuonRefitter::selectMuonHits(), HICMeasurementEstimator::setCuts(), CosmicMuonSmoother::smooth(), sortTrajectoryMeasurements(), TempTrajectory::TempTrajectory(), ClusterShapeTrajectoryFilter::toBeContinued(), GsfTrajectorySmoother::trajectories(), CosmicMuonTrajectoryBuilder::trajectories(), GlobalCosmicMuonTrajectoryBuilder::trajectories(), KFTrajectorySmoother::trajectories(), trajectoryToResiduals(), and HICMuonUpdator::update().

{ return theData;}

int Trajectory::ndof

(

bool

bon = true

)

const

Number of dof of the trajectory. The method accepts a bool in order to properly take into account the presence of magnetic field in the dof computation. By default the MF is considered ON.

Definition at line 74 of file Trajectory.cc.

References max(), and DetId::Muon.

Referenced by SiPixelLorentzAngle::analyze(), MuonTrackLoader::buildTrackAtPCA(), GlobalTrackQualityProducer::trackProbability(), and GlobalTrajectoryBuilderBase::trackProbability().

                                   {
  const Trajectory::RecHitContainer transRecHits = recHits();
  
  int dof = 0;
  int dofBad = 0;
  
  for(Trajectory::RecHitContainer::const_iterator rechit = transRecHits.begin();
      rechit != transRecHits.end(); ++rechit) {
    if((*rechit)->isValid())
      dof += (*rechit)->dimension();
    else if( isBad(**rechit) && (*rechit)->geographicalId().det()==DetId::Muon )
      dofBad += (*rechit)->dimension();
  }

  // If dof!=0 (there is at least 1 valid hit),
  //    return ndof=ndof(fit)
  // If dof=0 (all rec hits are invalid, only for STA trajectories),
  //    return ndof=ndof(invalid hits)
  if(dof) {
    int constr = bon ? 5 : 4;
    return std::max(dof - constr, 0);
  }
  else {
    // A STA can have < 5 (invalid) hits
    // if this is the case ==> ndof = 1
    // (to avoid divisions by 0)
    int constr = bon ? 5 : 4;
    return std::max(dofBad - constr, 1);
  }
}

signed char Trajectory::nLoops ( ) const

inline

Definition at line 319 of file Trajectory.h.

References theNLoops.

Referenced by GroupedCkfTrajectoryBuilder::backwardFit().

{return theNLoops;}

void Trajectory::pop

(

)

Remove the last measurement from the trajectory.

Definition at line 17 of file Trajectory.cc.

References relativeConstraints::empty, and DetId::Muon.

Referenced by BaseCkfTrajectoryBuilder::addToResult(), TrajectoryCleanerMerger::reOrderMeasurements(), CosmicMuonTrajectoryBuilder::reverseTrajectoryPropagationDirection(), and CosmicMuonTrajectoryBuilder::trajectories().

                     {
  if (!empty()) {
    if(theData.back().recHit()->isValid()) {
      theNumberOfFoundHits--;
      theChiSquared -= theData.back().estimate();
    }
    else if(lost(* (theData.back().recHit()) )) {
      theNumberOfLostHits--;
    }
    else if(isBad(* (theData.back().recHit()) ) && theData.back().recHit()->geographicalId().det()==DetId::Muon ) {
      theChiSquaredBad -= theData.back().estimate();
    }

    theData.pop_back();
  }
}

void Trajectory::push

(

const TrajectoryMeasurement &

tm

)

Add a new measurement to a Trajectory. The Chi2 of the trajectory is incremented by the value of tm.estimate() .

Definition at line 35 of file Trajectory.cc.

References TrajectoryMeasurement::estimate().

Referenced by CosmicTrajectoryBuilder::AddHit(), CRackTrajectoryBuilder::AddHit(), GroupedCkfTrajectoryBuilder::backwardFit(), MuonRoadTrajectoryBuilder::cleanTrajectory(), StandAloneMuonFilter::createDefaultTrajectory(), RoadSearchTrackCandidateMakerAlgorithm::createSeedTrajectory(), RoadSearchTrackCandidateMakerAlgorithm::extrapolateTrajectory(), GsfTrajectoryFitter::fit(), KFFittingSmoother::fit(), CosmicMuonSmoother::fit(), KFTrajectoryFitter::fit(), MuonRoadTrajectoryBuilder::GatherHits(), NuclearTrackCorrector::newTrajNeeded(), RoadSearchTrackCandidateMakerAlgorithm::PrepareTrackCandidates(), MuonMillepedeTrackRefitter::produce(), TrackerToMuonPropagator::produce(), CSCOverlapsTrackPreparation::produce(), cms::CkfTrackCandidateMakerBase::produceBase(), TrajectoryCleanerMerger::reOrderMeasurements(), sortTrajectoryMeasurements(), TempTrajectory::toTrajectory(), KFTrajectorySmoother::trajectories(), TrackTransformer::transform(), and MuonTrajectoryUpdator::update().

                                                      {
  push( tm, tm.estimate());
}

void Trajectory::push	(	const TrajectoryMeasurement &	tm,
		double	chi2Increment
	)

same as the one-argument push, but the trajectory Chi2 is incremented by chi2Increment. Useful e.g. in trajectory smoothing.

Definition at line 39 of file Trajectory.cc.

References alongMomentum, DetId::Muon, oppositeToMomentum, and TrajectoryMeasurement::recHit().

{
  theData.push_back(tm);
  if ( tm.recHit()->isValid()) {
    theChiSquared += chi2Increment;
    theNumberOfFoundHits++;
  }
  // else if (lost( tm.recHit()) && !inactive(tm.recHit().det())) theNumberOfLostHits++;
  else if (lost( *(tm.recHit()) ) ) {
    theNumberOfLostHits++;
  }
 
  else if (isBad( *(tm.recHit()) ) && tm.recHit()->geographicalId().det()==DetId::Muon ) {
    theChiSquaredBad += chi2Increment;
  }
 
  // in case of a Trajectory constructed without direction, 
  // determine direction from the radii of the first two measurements

  if ( !theDirectionValidity && theData.size() >= 2) {
    if (theData[0].updatedState().globalPosition().perp() <
    theData.back().updatedState().globalPosition().perp())
      theDirection = alongMomentum;
    else theDirection = oppositeToMomentum;
    theDirectionValidity = true;
  }
}

Trajectory::RecHitContainer Trajectory::recHits

(

bool

splitting = false

)

const

Return all RecHits in a container.

Definition at line 67 of file Trajectory.cc.

Referenced by CachingSeedCleanerByHitPosition::add(), SiStripGainFromData::algoAnalyze(), GroupedCkfTrajectoryBuilder::backwardFit(), MuonTrackLoader::buildTrackExtra(), CkfDebugger::correctTrajectory(), CosmicMuonTrajectoryBuilder::estimateDirection(), GsfTrajectoryFitter::fit(), KFSplittingFitter::fit(), CosmicMuonSmoother::fit(), KFTrajectoryFitter::fit(), CosmicMuonTrajectoryBuilder::flipTrajectory(), CosmicMuonTrajectoryBuilder::getDirectionByTime(), CosmicMuonUtilities::isTraversing(), cms::CompareTrajLay::operator()(), RoadSearchTrackCandidateMakerAlgorithm::PrepareTrackCandidates(), KfTrackProducerBase::putInEvt(), GsfTrackProducerBase::putInEvt(), TrackProducerWithSCAssociation::putInEvt(), CosmicTrajectoryBuilder::qualityFilter(), HICTrajectoryBuilder::qualityFilter(), CRackTrajectoryBuilder::qualityFilter(), StandAloneMuonRefitter::refit(), CRackTrajectoryBuilder::run(), CosmicMuonTrajectoryBuilder::selfDuplicate(), and StandAloneMuonRefitter::singleRefit().

                                                                  {
  RecHitContainer hits;
  recHitsV(hits,splitting);
  return hits;
}

void Trajectory::recHitsV	(	ConstRecHitContainer &	cont,
		bool	splitting = false
	)		const

Definition at line 107 of file Trajectory.cc.

References alongMomentum, oppositeToMomentum, hitfit::scalar(), and PV3DBase< T, PVType, FrameType >::z().

                                                                          {
  hits.reserve(theData.size());
  if(!splitting){  
    for (Trajectory::DataContainer::const_iterator itm
       = theData.begin(); itm != theData.end(); itm++){    
      hits.push_back((*itm).recHit());
    }
  }else{    
    for (Trajectory::DataContainer::const_iterator itm
       = theData.begin(); itm != theData.end(); itm++){    

      // ====== WARNING: this is a temporary solution =========
      //        all this part of code should be implemented internally 
      //        in the TrackingRecHit classes. The concrete types of rechit 
      //        should be transparent to the Trajectory class

      if( typeid(*(itm->recHit()->hit())) == typeid(SiStripMatchedRecHit2D)){
        LocalPoint firstLocalPos = 
      itm->updatedState().surface().toLocal(itm->recHit()->transientHits()[0]->globalPosition());
    
    LocalPoint secondLocalPos = 
      itm->updatedState().surface().toLocal(itm->recHit()->transientHits()[1]->globalPosition());
    
    LocalVector Delta = secondLocalPos - firstLocalPos;
    float scalar  = Delta.z() * (itm->updatedState().localDirection().z());
    

    TransientTrackingRecHit::ConstRecHitPointer hitA, hitB;

    // Get 2D strip Hits from a matched Hit.
    //hitA = itm->recHit()->transientHits()[0];
    //hitB = itm->recHit()->transientHits()[1];

    // Get 2D strip Hits from a matched Hit. Then get the 1D hit from the 2D hit
    if(!itm->recHit()->transientHits()[0]->detUnit()->type().isEndcap()){
      hitA = itm->recHit()->transientHits()[0]->transientHits()[0];
      hitB = itm->recHit()->transientHits()[1]->transientHits()[0];
    }else{ //don't use 1D hit in the endcap yet
      hitA = itm->recHit()->transientHits()[0];
      hitB = itm->recHit()->transientHits()[1];
    }

    if( (scalar>=0 && direction()==alongMomentum) ||
        (scalar<0 && direction()==oppositeToMomentum)){
      hits.push_back(hitA);
      hits.push_back(hitB);
    }else if( (scalar>=0 && direction()== oppositeToMomentum) ||
          (scalar<0 && direction()== alongMomentum)){
      hits.push_back(hitB);
      hits.push_back(hitA);
    }else {
      //throw cms::Exception("Error in Trajectory::recHitsV(). Direction is not defined");  
          edm::LogError("Trajectory_recHitsV_UndefinedTrackDirection") << 
                "Error in Trajectory::recHitsV: scalar = " << scalar << 
                ", direction = " << (direction()==alongMomentum ? "along" : (direction()==oppositeToMomentum ? "opposite" : "undefined")) << "\n";
          hits.push_back(hitA);
          hits.push_back(hitB);
        }         
      }else if(typeid(*(itm->recHit()->hit())) == typeid(ProjectedSiStripRecHit2D)){
    //hits.push_back(itm->recHit()->transientHits()[0]);    //Use 2D SiStripRecHit
    if(!itm->recHit()->transientHits()[0]->detUnit()->type().isEndcap()){
      hits.push_back(itm->recHit()->transientHits()[0]->transientHits()[0]);    //Use 1D SiStripRecHit
    }else{
      hits.push_back(itm->recHit()->transientHits()[0]);    //Use 2D SiStripRecHit
    }
    // ===================================================================================  
      }else if(typeid(*(itm->recHit()->hit())) == typeid(SiStripRecHit2D)){
    //hits.push_back(itm->recHit());  //Use 2D SiStripRecHit
    if(!itm->recHit()->detUnit()->type().isEndcap()){
      hits.push_back(itm->recHit()->transientHits()[0]); //Use 1D SiStripRecHit
    }else{
      hits.push_back(itm->recHit());  //Use 2D SiStripRecHit
    }
      }else{
    hits.push_back(itm->recHit());
      }
    }//end loop on measurements
  }
}

void Trajectory::reserve ( unsigned int  n )

inline

Reserves space in the vector to avoid lots of allocations when push_back-ing measurements

Definition at line 159 of file Trajectory.h.

References theData.

Referenced by StandAloneMuonFilter::createDefaultTrajectory(), KFTrajectoryFitter::fit(), TempTrajectory::toTrajectory(), and KFTrajectorySmoother::trajectories().

{ theData.reserve(n); }

void Trajectory::reverse

(

)

Reverse the propagation direction and the order of the trajectory measurements. It doesn't reverse the forward and backward predicted states within each trajectory measurement

Definition at line 276 of file Trajectory.cc.

References alongMomentum, and oppositeToMomentum.

                         {
    // reverse the direction (without changing it if it's not along or opposite)
    if (theDirection == alongMomentum)           theDirection = oppositeToMomentum;
    else if (theDirection == oppositeToMomentum) theDirection = alongMomentum;
    // reverse the order of the hits
    std::reverse(theData.begin(), theData.end());
}

TrajectorySeed const& Trajectory::seed ( ) const

inline

Access to the seed used to reconstruct the Trajectory.

Definition at line 265 of file Trajectory.h.

References theSeed.

Referenced by CosmicTrajectoryBuilder::AddHit(), GroupedCkfTrajectoryBuilder::backwardFit(), MuonRoadTrajectoryBuilder::cleanTrajectory(), CosmicMuonTrajectoryBuilder::estimateDirection(), GsfTrajectoryFitter::fit(), KFSplittingFitter::fit(), CosmicMuonSmoother::fit(), KFTrajectoryFitter::fit(), CosmicMuonTrajectoryBuilder::flipTrajectory(), NuclearTrackCorrector::getTrackFromTrajectory(), RoadSearchTrackCandidateMakerAlgorithm::PrepareTrackCandidates(), CosmicMuonTrajectoryBuilder::reverseTrajectory(), CosmicMuonTrajectoryBuilder::reverseTrajectoryPropagationDirection(), CRackTrajectoryBuilder::run(), StandAloneMuonRefitter::singleRefit(), CosmicMuonSmoother::smooth(), sortTrajectoryMeasurements(), GsfTrajectorySmoother::trajectories(), and KFTrajectorySmoother::trajectories().

{ return *theSeed;}

edm::RefToBase<TrajectorySeed> Trajectory::seedRef ( void  ) const

inline

return the Reference to the trajectory seed in the original seeds collection. If the collection has been dropped from the Event, the reference may be invalid. Its validity should be tested, before the reference is actually used.

Definition at line 296 of file Trajectory.h.

References seedRef_.

Referenced by MuonTrackLoader::buildTrackExtra(), KfTrackProducerBase::putInEvt(), GsfTrackProducerBase::putInEvt(), TrackProducerWithSCAssociation::putInEvt(), and setSeedRef().

{ return seedRef_; }

void Trajectory::setDPhiCacheForLoopersReconstruction ( float  dphi )

inline

method to set the delta phi angle betweem the directions of the two measurements on the last two layers crossed by the trajectory

Definition at line 316 of file Trajectory.h.

References theDPhiCache.

{  theDPhiCache = dphi;}

void Trajectory::setNLoops ( signed char  value )

inline

Definition at line 321 of file Trajectory.h.

References theNLoops, and relativeConstraints::value.

Referenced by GroupedCkfTrajectoryBuilder::backwardFit(), cms::CkfTrackCandidateMakerBase::produceBase(), and TempTrajectory::toTrajectory().

{ theNLoops=value;}

void Trajectory::setSeedRef ( const edm::RefToBase< TrajectorySeed > &  seedRef )

inline

Definition at line 298 of file Trajectory.h.

References seedRef(), and seedRef_.

Referenced by GlobalTrajectoryBuilderBase::build(), TrackProducerAlgorithm< reco::GsfTrack >::buildTrack(), TrackProducerAlgorithm< reco::Track >::buildTrack(), and cms::CkfTrackCandidateMakerBase::produceBase().

{ seedRef_ = seedRef ; } 

const boost::shared_ptr<const TrajectorySeed>& Trajectory::sharedSeed ( ) const

inline

Definition at line 308 of file Trajectory.h.

References theSeed.

{ return theSeed; }

void Trajectory::validRecHits

(

ConstRecHitContainer &

cont

)

const

Just valid hits..

Definition at line 187 of file Trajectory.cc.

Referenced by TrackProducerAlgorithm< reco::Track >::buildTrack(), TrackProducerAlgorithm< reco::GsfTrack >::buildTrack(), and NuclearTrackCorrector::getTrackFromTrajectory().

                                                               {
  hits.reserve(foundHits());
  for (Trajectory::DataContainer::const_iterator itm
     = theData.begin(); itm != theData.end(); itm++)
    if ((*itm).recHit()->isValid()) hits.push_back((*itm).recHit());
}

Member Data Documentation

edm::RefToBase<TrajectorySeed> Trajectory::seedRef_

private

Definition at line 327 of file Trajectory.h.

Referenced by seedRef(), and setSeedRef().

float Trajectory::theChiSquared

private

Definition at line 330 of file Trajectory.h.

Referenced by chiSquared().

float Trajectory::theChiSquaredBad

private

Definition at line 331 of file Trajectory.h.

Referenced by chiSquared().

DataContainer Trajectory::theData

private

Definition at line 329 of file Trajectory.h.

Referenced by empty(), firstMeasurement(), lastLayer(), lastMeasurement(), measurements(), and reserve().

PropagationDirection Trajectory::theDirection

private

Definition at line 336 of file Trajectory.h.

bool Trajectory::theDirectionValidity

private

Definition at line 337 of file Trajectory.h.

float Trajectory::theDPhiCache

private

Definition at line 340 of file Trajectory.h.

Referenced by dPhiCacheForLoopersReconstruction(), and setDPhiCacheForLoopersReconstruction().

signed char Trajectory::theNLoops

private

Definition at line 341 of file Trajectory.h.

Referenced by incrementLoops(), isLooper(), nLoops(), and setNLoops().

signed short Trajectory::theNumberOfFoundHits

private

Definition at line 333 of file Trajectory.h.

Referenced by chiSquared(), and foundHits().

signed short Trajectory::theNumberOfLostHits

private

Definition at line 334 of file Trajectory.h.

Referenced by lostHits().

boost::shared_ptr<const TrajectorySeed> Trajectory::theSeed

private

Definition at line 326 of file Trajectory.h.

Referenced by seed(), and sharedSeed().

bool Trajectory::theValid

private

Definition at line 338 of file Trajectory.h.

Referenced by invalidate(), and isValid().