ntupleDataFormat.Track Class Reference

Inheritance diagram for ntupleDataFormat.Track:

Public Member Functions
def	__init__ (self, tree, index)
def	dxyPull (self)
def	dzPull (self)
def	phiPull (self)
def	ptPull (self)
def	seed (self)
def	thetaPull (self)
def	vertex (self)
Public Member Functions inherited from ntupleDataFormat._Object
def	__getattr__ (self, attr)
def	__init__ (self, tree, index, prefix)
def	index (self)
def	isValid (self)
Public Member Functions inherited from ntupleDataFormat._RecoHitAdaptor
def	__init__ (self)
def	gluedHits (self)
def	hits (self)
def	invalidHits (self)
def	phase2OTHits (self)
def	pixelHits (self)
def	stripHits (self)
Public Member Functions inherited from ntupleDataFormat._TrackingParticleMatchAdaptor
def	__init__ (self)
def	bestMatchingTrackingParticle (self)
def	bestMatchingTrackingParticleFromFirstHit (self)
def	bestMatchingTrackingParticleFromFirstHitNormalizedChi2 (self)
def	bestMatchingTrackingParticleFromFirstHitShareFrac (self)
def	bestMatchingTrackingParticleFromFirstHitShareFracSimClusterDenom (self)
def	bestMatchingTrackingParticleFromFirstHitShareFracSimDenom (self)
def	bestMatchingTrackingParticleNormalizedChi2 (self)
def	bestMatchingTrackingParticleShareFrac (self)
def	bestMatchingTrackingParticleShareFracSimClusterDenom (self)
def	bestMatchingTrackingParticleShareFracSimDenom (self)
def	matchedTrackingParticleInfos (self)
def	nMatchedTrackingParticles (self)

Detailed Description

Class presenting a track.

Definition at line 669 of file ntupleDataFormat.py.

Constructor & Destructor Documentation

def ntupleDataFormat.Track.__init__	(		self,
			tree,
			index
	)

Constructor.

Arguments:
tree  -- TTree object
index -- Index of the track

Definition at line 671 of file ntupleDataFormat.py.

    def __init__(self, tree, index):
        """Constructor.

        Arguments:
        tree  -- TTree object
        index -- Index of the track
        """
        super(Track, self).__init__(tree, index, "trk")

Member Function Documentation

def ntupleDataFormat.Track.dxyPull

(

self

)

Definition at line 708 of file ntupleDataFormat.py.

References ntupleDataFormat._TrackingParticleMatchAdaptor.bestMatchingTrackingParticle(), btagbtvdeep::TrackPairFeatures.dxy, btagbtvdeep::SecondaryVertexFeatures.dxy, btagbtvdeep::SeedingTrackFeatures.dxy, tauImpactParameter::TrackParticle.dxy, dnn_inputs_2017v1.dxy, btagbtvdeep::SeedingTrackInfoBuilder.dxy(), L1MuKBMTrack.dxy(), Tau.Tau.dxy(), reco::PFTauTransverseImpactParameter.dxy(), Muon.Muon.dxy(), PrimaryVertexMonitor.dxy, PFDisplacedVertexHelper::TracksSelector.dxy(), TopMonitor::PVcut.dxy, pat::IsolatedTrack.dxy(), ScoutingMuon.dxy(), reco::Conversion.dxy(), reco::TrackBase.dxy(), pat::Tau.dxy(), pat::PackedGenParticle.dxy(), Electron.Electron.dxy(), pat::PackedCandidate.dxy(), and PrimaryVertexMonitor.dxyErr.

    def dxyPull(self):
        tp = self.bestMatchingTrackingParticle()
        if tp is None:
            return None
        return (self.dxy() - tp.pca_dxy())/self.dxyErr()

def ntupleDataFormat.Track.dzPull

(

self

)

Definition at line 714 of file ntupleDataFormat.py.

References ntupleDataFormat._TrackingParticleMatchAdaptor.bestMatchingTrackingParticle(), btagbtvdeep::TrackPairFeatures.dz, btagbtvdeep::SeedingTrackFeatures.dz, tauImpactParameter::TrackParticle.dz, egammaisolation::EgammaTrackSelector.dz, RigidBodyAlignmentParameters.dz, HGCalParameters::hgtrap.dz, btagbtvdeep::SeedingTrackInfoBuilder.dz(), BowedSurfaceAlignmentDerivatives.dz, dnn_inputs_2017v1.dz, BowedSurfaceAlignmentParameters.dz, DTMuonSLToSL.dz, PreshowerStrip.dz(), IdealZDCTrapezoid.dz(), DDHCalXtalAlgo.dz, DDHCalTestBeamAlgo.dz, IdealObliquePrism.dz(), IdealZPrism.dz(), Tau.Tau.dz(), IdealCastorTrapezoid.dz(), pat::VertexAssociation.dz(), DTMuonMillepede.dz, DTSegmentResult.dz, PrimaryVertexMonitor.dz, ScoutingElectron.dz(), Muon.Muon.dz(), EcalTrapezoidParameters.dz(), DTHitResult.dz, TopMonitor::PVcut.dz, TrackerValidationVariables::AVTrackStruct.dz, pat::IsolatedTrack.dz(), ScoutingMuon.dz(), TrackStruct::TrackParameterStruct.dz, reco::Conversion.dz(), MuonGeometryArrange::MGACollection.dz, CosmicRateAnalyzer.dz, reco::TrackBase.dz(), pat::PackedGenParticle.dz(), Electron.Electron.dz(), pat::PackedCandidate.dz(), PrimaryVertexMonitor.dzErr, and TrackStruct::TrackParameterStruct.dzErr.

    def dzPull(self):
        tp = self.bestMatchingTrackingParticle()
        if tp is None:
            return None
        return (self.dz() - tp.pca_dz())/self.dzErr()

def ntupleDataFormat.Track.phiPull

(

self

)

Definition at line 702 of file ntupleDataFormat.py.

References ntupleDataFormat._TrackingParticleMatchAdaptor.bestMatchingTrackingParticle(), eetest::CandForTest.phi(), btagbtvdeep::JetFeatures.phi, btagbtvdeep::TrackPairFeatures.phi, TrackingRecHitGlobalState.phi, btagbtvdeep::SeedingTrackFeatures.phi, omtf::DtDataWord64.phi(), GEMVfatStatusDigi.phi(), res::HelperElectron.phi(), res::HelperMuon.phi(), omtf::MuonDataWord64.phi(), res::HelperJet.phi(), tauImpactParameter::TrackParticle.phi, TwoBodyDecayParameters.phi, HcalCellType::HcalCell.phi, AnnealingSchedule.phi(), res::HelperMET.phi(), TwoBodyDecayDerivatives.phi, CommonMETData.phi, ScoutingParticle.phi(), ThirdHitPredictionFromCircle.phi(), SimG4HcalHitCluster.phi(), ConfigurableAnnealing.phi(), Geom::Polar2Cartesian< T >.phi(), jetData.phi, HcalNumberingFromDDD::HcalID.phi, CaloHit.phi(), GeometricAnnealing.phi(), Residual1DHit.phi, DeterministicAnnealing.phi(), MySimTrack.phi, HcalChannelId.phi, SuperClusterHelper.phi(), RecoObj.phi, ScoutingPhoton.phi(), RecHitsSortedInPhi::HitWithPhi.phi(), btagbtvdeep::SeedingTrackInfoBuilder.phi(), MatchStruct.phi, L1Analysis::L1AnalysisRecoClusterDataFormat.phi, L2TauPixelTrackMatch::TinyTrack.phi, HcalDDDRecConstants::HcalID.phi, HGCal_helpers::Coordinates.phi, L1GctMet::etmiss_vec.phi, EcalClusterEnergyDeposition.phi, ImpactPoint.phi, PtEtaPhiMass.phi(), reco::isodeposit::Direction.phi(), correctionValue_class.phi, EleRelPoint.phi(), DDHCalEndcapModuleAlgo::HcalEndcapPar.phi, HEChannel.phi, egHLT::BinData.phi, DDTrackerPhiAlgo.phi, LMapRow.phi, L1Analysis::L1AnalysisL1CaloClusterDataFormat.phi, DTMuonLocalAlignment.phi, RotationType.phi(), GloballyPositioned< U >.phi(), DDHCalTestBeamAlgo.phi, GloballyPositioned< float >.phi(), GloballyPositioned< align::Scalar >.phi(), GloballyPositioned< T >.phi(), l1t::HGCalTowerCoord.phi, DDCutTubsFromPoints::Section.phi, DDTrackerLinear.phi, Geom::Cylindrical2Cartesian< T >.phi(), L1Analysis::L1AnalysisL1CaloTowerDataFormat.phi, L1Analysis::L1AnalysisRecoTauDataFormat.phi, ResonanceBuilder.Resonance.phi(), BeamProfileVtxGenerator.phi(), PatTrackAnalyzer::Plots.phi, HcalTestHistoClass::Hit.phi, L1Analysis::L1AnalysisRecoElectronDataFormat.phi, PHcalTB04Info.phi(), L1MuDTChambPhDigi.phi(), L1Phase2MuDTPhDigi.phi(), HcalFlexiHardcodeGeometryLoader::HBHOCellParameters.phi, Point2DBase< T, FrameTag >.phi(), Vector2DBase< T, FrameTag >.phi(), LASCoordinateSet.phi, L1Analysis::L1AnalysisRecoMuon2DataFormat.phi, PHcalTB06Info::Hit.phi, PV2DBase< double, PointTag, LocalTag >.phi(), PV2DBase< float, PointTag, LocalTag >.phi(), PV2DBase< T, VectorTag, FrameTag >.phi(), PV2DBase< float, VectorTag, GlobalTag >.phi(), PV2DBase< T, PointTag, FrameTag >.phi(), Vector2DBase< T, Frame >.phi(), PV2DBase< T, PVType, FrameType >.phi(), Point2DBase< Scalar, LocalTag >.phi(), Point2DBase< U, FrameTag >.phi(), Vector2DBase< U, FrameTag >.phi(), Point2DBase< T, Frame >.phi(), Vector2DBase< U, Frame >.phi(), Point2DBase< U, Frame >.phi(), reco::GhostTrackPrediction.phi(), CSCSP_MBblock.phi(), HGCalRecHitValidation::HitsInfo.phi, TrackerValidationVariables::AVHitStruct.phi, RhoEtaPhi.phi(), FWPFCandidateDetailView.phi(), trigger::TriggerObject.phi(), l1t::emtf::RPC.phi, HLTJetsCleanedFromLeadingLeptons< JetType >::EtaPhiE.phi(), PFECALSuperClusterAlgo::CalibratedPFCluster.phi(), reco::CastorCell.phi(), cms::MinBias.phi, PGlobalSimHit::CalHit.phi, HGCalSimHitStudy::hitsinfo.phi, HLLHCEvtVtxGenerator.phi, MaterialBudgetHcalHistos.phi, HCalEndcapModuleAlgo::HcalEndcapPar.phi, SimpleL1MuGMTCand.phi(), QcdLowPtDQM::Pixel.phi(), metsig::SigInputObj.phi, IsolatedPixelTrackCandidateProducer::seedAtEC.phi, TauL1TPair.phi(), XMLProcessor::_LMapRowHBEF.phi, MuScleFitMuon.phi(), L1GctEtMiss.phi(), CSCSP_SPblock.phi(), PerigeeTrajectoryParameters.phi(), LMapDetId.phi, IsolatedPixelTrackCandidateL1TProducer::seedAtEC.phi, PGlobalSimHit::FwdHit.phi, PHcalTB06Info.phi(), reco::CaloMuon.phi(), L1GctHtMiss.phi(), ScoutingCaloJet.phi(), ScoutingElectron.phi(), ValidationMisalignedTracker.phi, Point3DBase< U, Frame >.phi(), Point3DBase< U, GlobalTag >.phi(), Vector3DBase< T, FrameTag >.phi(), Vector3DBase< float, GlobalTag >.phi(), PV3DBase< T, PointTag, GlobalTag >.phi(), PV3DBase< long double, PointTag, GlobalTag >.phi(), Vector3DBase< double, LocalTag >.phi(), Vector3DBase< U, Frame >.phi(), Vector3DBase< U, FrameTag >.phi(), Point3DBase< T, Frame >.phi(), Vector3DBase< T, Frame >.phi(), Point3DBase< U, FrameTag >.phi(), HTrackVariables.phi(), PV3DBase< Scalar, PointTag, GlobalTag >.phi(), PV3DBase< float, VectorTag, LocalTag >.phi(), PV3DBase< float, PointTag, LocalTag >.phi(), PV3DBase< Scalar, VectorTag, GlobalTag >.phi(), PV3DBase< float, PointTag, GlobalTag >.phi(), PV3DBase< T, VectorTag, FrameTag >.phi(), PV3DBase< T, PointTag, FrameTag >.phi(), PV3DBase< align::Scalar, PointTag, GlobalTag >.phi(), Point3DBase< U, LocalTag >.phi(), Vector3DBase< U, LocalTag >.phi(), Vector3DBase< U, GlobalTag >.phi(), PV3DBase< T, PVType, FrameType >.phi(), Thrust::ThetaPhi.phi, reco::PattRecoPeak< Real >.phi(), reco::PattRecoPeak< float >.phi(), Geom::Spherical2Cartesian< T >.phi(), PattRecoPeak< Real >.phi(), PatPhotonSimpleAnalyzer::struct_recPhoton.phi, PhotonFix.phi(), PixelUnpackingRegions::Module.phi, CurvilinearTrajectoryParameters.phi(), HGCalSimHitValidation::hitsinfo.phi, L1MuDTTrack.phi(), L1MuKBMTCombinedStub.phi(), PGlobalSimHit::BrlHit.phi, gem::VFATdata.phi(), L1MuBMTrack.phi(), reco::IsoDeposit.phi(), reco::CastorJet.phi(), reco::CastorEgamma.phi(), PdtPdgMini.phi, Phi< T >.phi(), Phi< U >.phi(), Geom::Phi< T1, Range >.phi(), MuonDTLocalMillepedeAlgorithm.phi, Phi< double > deltaphi double.phi(), Phi< double >.phi(), Phi< T1, Range >.phi(), Phi< double, Geom::MinusPiToPi >.phi(), Geom::Phi< float >.phi(), Phi< float, Geom::MinusPiToPi >.phi(), HcalFlexiHardcodeGeometryLoader::HECellParameters.phi, BPhysicsValidation::ParticleMonitor.phi, L1GctMet::etmiss_internal.phi, EgammaTowerIsolationNew< NC >.phi, EcalTrapezoidParameters.phi(), L1TDEMON.phi, TrajSeedMatcher::SCHitMatch.phi(), Basic2DVector< float >.phi(), Basic2DVector< Scalar >.phi(), Basic2DVector< double > thc.phi(), Basic2DVector< U >.phi(), Lepton.phi, Basic2DVector< double >.phi(), Basic2DVector< T >.phi(), HcalTB02HistoClass.phi(), TTTrack< T >.phi(), TTTrack< Ref_Phase2TrackerDigi_ >.phi(), L1Analysis::L1AnalysisRecoJetDataFormat.phi, ScoutingPFJet.phi(), DDTrap.phi(), RecHitsSortedInPhi.phi(), cms::dd::DDTrap.phi(), HcalTB02Analysis.phi, L1TdeGCT.phi, L1MuDTTrackSegPhi.phi(), TrackerValidationVariables::AVTrackStruct.phi, GeometricTimingDet.phi(), L1GctInternJetData.phi(), cms::Analyzer_minbias.phi, L1MuBMTrackSegPhi.phi(), reco::Candidate.phi(), AnalyzerMinbias.phi, DTChambPhSegm.phi(), egHLT::OffPho.phi(), PhotonIDSimpleAnalyzer::struct_recPhoton.phi, Basic3DVector< long double >.phi(), ScoutingMuon.phi(), DTSectCollPhSegm.phi(), reco::CastorCluster.phi(), EcalTestPulseAnalyzer.phi, DTRecSegment4D.phi, EcalABAnalyzer.phi, GeometricDet.phi(), reco::Particle.phi(), EcalPerEvtLaserAnalyzer.phi, SingleParticleEvent.phi(), egHLT::OffEle.phi(), TrackStruct::TrackParameterStruct.phi, MuonGeometryArrange::MGACollection.phi, Basic3DVector< double > momAtVtx Basic3DVector< double > vert.phi(), Basic3DVector< float > pos GlobalPoint.phi(), Basic3DVector< double >.phi(), Basic3DVector< float > seedCentre.phi(), Basic3DVector< U >.phi(), Basic3DVector< Scalar >.phi(), Basic3DVector< align::Scalar >.phi(), Basic3DVector< float > tcCentre float.phi(), Basic3DVector< double > momAtVtx Basic3DVector< double >.phi(), Basic3DVector< float > seedCentre float.phi(), Basic3DVector< float > mom GlobalVector.phi(), Basic3DVector< T >.phi(), Basic3DVector< float > constituentCentre Basic3DVector< float >.phi(), Basic3DVector< float >.phi(), pair< bool, reco::TrackBase::ParameterVector >.phi(), CaloParticle.phi(), AlignmentMonitorMuonSystemMap1D::MyResidual.phi, reco::ParticleState.phi(), SimCluster.phi(), JetAnalyzer_HeavyIons_matching::MyJet.phi, CosmicRateAnalyzer.phi, TrackingParticle.phi(), CandidateWithRef< Ref >.phi(), HGCalClusterT< C >.phi(), HGCalCLUEAlgo::CellsOnLayer.phi, reco::LeafCandidate.phi(), reco::IsoDeposit::const_iterator.phi(), HitDoublets.phi(), L1Analysis::L1AnalysisRecoMuonDataFormat.phi, HcalLogicalMapGenerator.phi, EcalLaserAnalyzer.phi, EcalLaserAnalyzer2.phi, reco::CaloCluster.phi(), MuonGmtPair.phi(), SiPixelErrorEstimation.phi, pat::MET::Vector2.phi(), RawParticle.phi(), reco::TrackBase.phi(), pat::PackedGenParticle.phi(), EcalClusterToolsT< noZS >::EcalClusterEnergyDeposition.phi, EcalSelectiveReadoutValidation::energiesEb_t.phi, DDParallelepiped.phi(), EcalSelectiveReadoutValidation::energiesEe_t.phi, SiPixelTrackingRecHitsValid.phi, pat::PackedCandidate.phi(), CellIndex.phi, PMuonSimHit::Trk.phi, PTrackerSimHit::Trk.phi, and TrackStruct::TrackParameterStruct.phiErr.

    def phiPull(self):
        tp = self.bestMatchingTrackingParticle()
        if tp is None:
            return None
        return (self.phi() - tp.pca_phi())/self.phiErr()

def ntupleDataFormat.Track.ptPull

(

self

)

Definition at line 690 of file ntupleDataFormat.py.

References ntupleDataFormat._TrackingParticleMatchAdaptor.bestMatchingTrackingParticle(), eetest::CandForTest.pt(), btagbtvdeep::TrackPairFeatures.pt, btagbtvdeep::JetFeatures.pt, btagbtvdeep::SecondaryVertexFeatures.pt, mypt.pt, btagbtvdeep::SeedingTrackFeatures.pt, res::HelperElectron.pt(), res::HelperMuon.pt(), res::HelperJet.pt(), ScoutingParticle.pt(), reco::VoronoiBackground.pt(), L1MuCSCPtLut.pt(), dnn_inputs_2017v1.pt, Residual1DHit.pt, PtHatReweightUserHook.pt, ScoutingPhoton.pt(), MySimTrack.pt, btagbtvdeep::SeedingTrackInfoBuilder.pt(), MatchStruct.pt, ALILine.pt(), RecoObj.pt, L2TauPixelTrackMatch::TinyTrack.pt, PtEtaPhiMass.pt(), reco::MuonMETCorrectionData.pt(), tauImpactParameter::LorentzVectorParticle.pt, ResonanceBuilder.Resonance.pt(), DTMuonLocalAlignment.pt, L1Analysis::L1AnalysisRecoTauDataFormat.pt, L1Analysis::L1AnalysisRecoElectronDataFormat.pt, ZMuMuIsolationAnalyzer.pt, L1Analysis::L1AnalysisRecoMuon2DataFormat.pt, PatTrackAnalyzer::Plots.pt, PGlobalSimHit::Trk.pt, HepLine3D.pt(), jpt::Map.pt(), PhysicsObjectsMonitor.pt, trigger::TriggerObject.pt(), SiStripLAProfileBooker.pt, TtFullHadSignalSel.pt(), reco::CaloMuon.pt(), BSTrkParameters.pt(), MuScleFitMuon.pt(), PTrajectoryStateOnDet.pt(), TauL1TPair.pt(), ScoutingCaloJet.pt(), ScoutingElectron.pt(), goodseedhelpers::HeavyObjectCache.pt, reco::ForwardProton.pt(), ValidationMisalignedTracker.pt, SimpleL1MuGMTCand.pt(), L1MuDTTrack.pt(), HTrackVariables.pt(), L1MuBMTrack.pt(), susybsm::HSCParticle.pt(), QualityCutsAnalyzer::histogram_element_t.pt, TrajectoryStateClosestToPoint.pt(), MuonDTLocalMillepedeAlgorithm.pt, BPhysicsValidation::ParticleMonitor.pt, reco::PreId.pt(), Lepton.pt, ScoutingPFJet.pt(), TrackerValidationVariables::AVTrackStruct.pt, reco::Candidate.pt(), egHLT::OffPho.pt(), MuonResidualsFitter::MuonAlignmentTreeRow.pt, ScoutingMuon.pt(), PrimaryVertexAnalyzer4PUSlimmed::recoPrimaryVertex.pt, reco::Particle.pt(), contrib::CMSBoostedTauSeedingAlgorithmStructure.pt(), reco::PFCluster.pt(), TrackStruct::TrackParameterStruct.pt, CaloParticle.pt(), AlignmentMonitorMuonSystemMap1D::MyTrack.pt, SimCluster.pt(), reco::ParticleState.pt(), CosmicRateAnalyzer.pt, JetAnalyzer_HeavyIons_matching::MyJet.pt, TrackingParticle.pt(), HGCalClusterT< C >.pt(), reco::LeafCandidate.pt(), CandidateWithRef< Ref >.pt(), L1Analysis::L1AnalysisRecoMuonDataFormat.pt, PtHatRapReweightUserHook.pt, GoodSeedProducer.pt, MuonGmtPair.pt(), l1t::EMTFTrack.pt, pat::MET::Vector2.pt(), RawParticle.pt(), reco::TrackBase.pt(), pat::PackedGenParticle.pt(), pat::PackedCandidate.pt(), PMuonSimHit::Trk.pt, PTrackerSimHit::Trk.pt, PatTrackAnalyzer::Plots.ptErr, TrackStruct::TrackParameterStruct.ptErr, Muon.Muon.ptErr(), and Electron.Electron.ptErr().

    def ptPull(self):
        tp = self.bestMatchingTrackingParticle()
        if tp is None:
            return None
        return (self.pt() - tp.pca_pt())/self.ptErr()

def ntupleDataFormat.Track.seed

(

self

)

Returns Seed of the track.

Definition at line 680 of file ntupleDataFormat.py.

References ntupleDataFormat._Object._checkIsValid(), SeedingNode< DATA >._index, Vispa.Share.FindAlgorithm.FindAlgorithm._index, RPCMuonExtraStruct._index, ntupleDataFormat._Object._index, python.cmstools.EventTree._index, python.cmstools.EventBranch._index, html.HtmlReport._index, ntupleDataFormat._Collection._tree, ntupleDataFormat._Object._tree, and python.cmstools.EventTree._tree.

    def seed(self):
        """Returns Seed of the track."""
        self._checkIsValid()
        return Seed(self._tree, self._tree.trk_seedIdx[self._index])

def ntupleDataFormat.Track.thetaPull

(

self

)

Definition at line 696 of file ntupleDataFormat.py.

References ntupleDataFormat._TrackingParticleMatchAdaptor.bestMatchingTrackingParticle().

    def thetaPull(self):
        tp = self.bestMatchingTrackingParticle()
        if tp is None:
            return None
        return (getattr(self, "lambda")() - tp.pca_lambda())/self.lambdaErr() # as in MTV

def ntupleDataFormat.Track.vertex

(

self

)

Returns Vertex that used this track in its fit.

Definition at line 685 of file ntupleDataFormat.py.

References ntupleDataFormat._Object._checkIsValid(), SeedingNode< DATA >._index, Vispa.Share.FindAlgorithm.FindAlgorithm._index, RPCMuonExtraStruct._index, ntupleDataFormat._Object._index, python.cmstools.EventTree._index, python.cmstools.EventBranch._index, html.HtmlReport._index, ntupleDataFormat._Collection._tree, ntupleDataFormat._Object._tree, and python.cmstools.EventTree._tree.

Referenced by Tau.Tau.dxy().

    def vertex(self):
        """Returns Vertex that used this track in its fit."""
        self._checkIsValid()
        return Vertex(self._tree, self._tree.trk_vtxIdx[self._index])