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Trk::KalmanVertexUpdator Class Reference

A concrete implementation of the Vertex Updator using the Kalman filter algorithm. More...

#include <KalmanVertexUpdator.h>

Inheritance diagram for Trk::KalmanVertexUpdator:
Collaboration diagram for Trk::KalmanVertexUpdator:

Public Types

enum  updateMode { removeTrack =-1 , addTrack =1 }

Public Member Functions

virtual StatusCode initialize () override
 KalmanVertexUpdator (const std::string &t, const std::string &n, const IInterface *p)
 Constructor.
 ~KalmanVertexUpdator ()
 Destructor.
virtual xAOD::Vertexadd (xAOD::Vertex &vtx, VxTrackAtVertex &trk) const override
 Method adding a single track to the vertex estimate.
virtual xAOD::Vertexremove (xAOD::Vertex &vtx, VxTrackAtVertex &trk) const override
 Method removing already added track from the vertex estimate.
virtual IVertexUpdator::positionUpdateOutcome positionUpdate (const xAOD::Vertex &vtx, const LinearizedTrack *trk, double trackWeight, IVertexUpdator::updateMode mode) const override
 Position update method.
virtual float trackParametersChi2 (const xAOD::Vertex &new_vtx, const LinearizedTrack *trk) const override
 Method calculating the interstep Chi2 increment.
virtual float trackParametersChi2 (const IVertexUpdator::positionUpdateOutcome &new_vtx, const LinearizedTrack *trk) const override
virtual float vertexPositionChi2 (const xAOD::Vertex &old_vtx, const xAOD::Vertex &new_vtx) const override
 Method calculating the vertex displacement-related part of the chi2.
virtual float vertexPositionChi2 (const xAOD::Vertex &old_vtx, const IVertexUpdator::positionUpdateOutcome &new_vtx) const override
ServiceHandle< StoreGateSvc > & evtStore ()
 The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.
const ServiceHandle< StoreGateSvc > & detStore () const
 The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.
virtual StatusCode sysInitialize () override
 Perform system initialization for an algorithm.
virtual StatusCode sysStart () override
 Handle START transition.
virtual std::vector< Gaudi::DataHandle * > inputHandles () const override
 Return this algorithm's input handles.
virtual std::vector< Gaudi::DataHandle * > outputHandles () const override
 Return this algorithm's output handles.
Gaudi::Details::PropertyBase & declareProperty (Gaudi::Property< T, V, H > &t)
void updateVHKA (Gaudi::Details::PropertyBase &)
MsgStream & msg () const
bool msgLvl (const MSG::Level lvl) const

Static Public Member Functions

static const InterfaceID & interfaceID ()
 AlgTool interface methods.

Protected Member Functions

void renounceArray (SG::VarHandleKeyArray &handlesArray)
 remove all handles from I/O resolution
std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void > renounce (T &h)
void extraDeps_update_handler (Gaudi::Details::PropertyBase &ExtraDeps)
 Add StoreName to extra input/output deps as needed.

Private Types

typedef ServiceHandle< StoreGateSvcStoreGateSvc_t

Private Member Functions

xAOD::Vertexupdate (xAOD::Vertex &vtx, const VxTrackAtVertex &trk, IVertexUpdator::updateMode mode) const
 Method where the fit is actually done.
Gaudi::Details::PropertyBase & declareGaudiProperty (Gaudi::Property< T, V, H > &hndl, const SG::VarHandleKeyType &)
 specialization for handling Gaudi::Property<SG::VarHandleKey>

Static Private Member Functions

static float trackParametersChi2 (const Amg::Vector3D &new_position, const LinearizedTrack *trk, const AmgSymMatrix(5) &trkParametersWeight)
static float vertexPositionChi2 (const xAOD::Vertex &old_vtx, const Amg::Vector3D &new_position)

Private Attributes

StoreGateSvc_t m_evtStore
 Pointer to StoreGate (event store by default)
StoreGateSvc_t m_detStore
 Pointer to StoreGate (detector store by default)
std::vector< SG::VarHandleKeyArray * > m_vhka
bool m_varHandleArraysDeclared

Detailed Description

A concrete implementation of the Vertex Updator using the Kalman filter algorithm.

The algorithm adds or removes a single track from the vertex estimate.

Based on R. Fruhwirth et al. Comp. Phys. Comm 96(1996) 189

Author
Kirill Prokofiev, November 2005

Changes:

David Shope david.nosp@m..ric.nosp@m.hard..nosp@m.shop.nosp@m.e@cer.nosp@m.n.ch (2016-04-19)

EDM Migration to xAOD - from Trk::VxCandidate to xAOD::Vertex, from Trk::RecVertex to xAOD::Vertex, from Trk::Vertex to Amg::Vector3D

Definition at line 36 of file KalmanVertexUpdator.h.

Member Typedef Documentation

◆ StoreGateSvc_t

typedef ServiceHandle<StoreGateSvc> AthCommonDataStore< AthCommonMsg< AlgTool > >::StoreGateSvc_t
privateinherited

Definition at line 388 of file AthCommonDataStore.h.

Member Enumeration Documentation

◆ updateMode

Enumerator
removeTrack 
addTrack 

Definition at line 68 of file IVertexUpdator.h.

Constructor & Destructor Documentation

◆ KalmanVertexUpdator()

Trk::KalmanVertexUpdator::KalmanVertexUpdator ( const std::string & t,
const std::string & n,
const IInterface * p )

Constructor.

Definition at line 14 of file KalmanVertexUpdator.cxx.

14 :
15 AthAlgTool(t,n,p)
16 {
17 declareInterface<IVertexUpdator>(this);
18 }
AthAlgTool()
Default constructor:

◆ ~KalmanVertexUpdator()

Trk::KalmanVertexUpdator::~KalmanVertexUpdator ( )
default

Destructor.

Member Function Documentation

◆ add()

xAOD::Vertex * Trk::KalmanVertexUpdator::add ( xAOD::Vertex & vtx,
VxTrackAtVertex & trk ) const
overridevirtual

Method adding a single track to the vertex estimate.

Implements Trk::IVertexUpdator.

Definition at line 36 of file KalmanVertexUpdator.cxx.

37 {
38 return update(vtx,trk,IVertexUpdator::addTrack);
39 }
xAOD::Vertex * update(xAOD::Vertex &vtx, const VxTrackAtVertex &trk, IVertexUpdator::updateMode mode) const
Method where the fit is actually done.

◆ declareGaudiProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< AlgTool > >::declareGaudiProperty ( Gaudi::Property< T, V, H > & hndl,
const SG::VarHandleKeyType &  )
inlineprivateinherited

specialization for handling Gaudi::Property<SG::VarHandleKey>

Definition at line 156 of file AthCommonDataStore.h.

158 {
160 hndl.value(),
161 hndl.documentation());
162
163 }
Gaudi::Details::PropertyBase & declareProperty(Gaudi::Property< T, V, H > &t)

◆ declareProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< AlgTool > >::declareProperty ( Gaudi::Property< T, V, H > & t)
inlineinherited

Definition at line 145 of file AthCommonDataStore.h.

145 {
146 typedef typename SG::HandleClassifier<T>::type htype;
148 }
Gaudi::Details::PropertyBase & declareGaudiProperty(Gaudi::Property< T, V, H > &hndl, const SG::VarHandleKeyType &)
specialization for handling Gaudi::Property<SG::VarHandleKey>

◆ detStore()

const ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< AlgTool > >::detStore ( ) const
inlineinherited

The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 95 of file AthCommonDataStore.h.

◆ evtStore()

ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< AlgTool > >::evtStore ( )
inlineinherited

The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 85 of file AthCommonDataStore.h.

◆ extraDeps_update_handler()

void AthCommonDataStore< AthCommonMsg< AlgTool > >::extraDeps_update_handler ( Gaudi::Details::PropertyBase & ExtraDeps)
protectedinherited

Add StoreName to extra input/output deps as needed.

use the logic of the VarHandleKey to parse the DataObjID keys supplied via the ExtraInputs and ExtraOuputs Properties to add the StoreName if it's not explicitly given

◆ initialize()

StatusCode Trk::KalmanVertexUpdator::initialize ( )
overridevirtual

Definition at line 23 of file KalmanVertexUpdator.cxx.

24 {
25 StatusCode sc = AlgTool::initialize();
26 if(sc.isFailure())
27 {
28 msg(MSG::ERROR)<<" Unable to initialize the AlgTool"<<endmsg;
29 return StatusCode::FAILURE;
30 }
31
32 return StatusCode::SUCCESS;
33 }
#define endmsg
static Double_t sc
MsgStream & msg() const
::StatusCode StatusCode
StatusCode definition for legacy code.

◆ inputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< AlgTool > >::inputHandles ( ) const
overridevirtualinherited

Return this algorithm's input handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

◆ interfaceID()

const InterfaceID & Trk::IVertexUpdator::interfaceID ( )
inlinestaticinherited

AlgTool interface methods.

Definition at line 56 of file IVertexUpdator.h.

56{ return IID_IVertexUpdator; };
static const InterfaceID IID_IVertexUpdator("IVertexUpdator", 1, 0)

◆ msg()

MsgStream & AthCommonMsg< AlgTool >::msg ( ) const
inlineinherited

Definition at line 24 of file AthCommonMsg.h.

24 {
25 return this->msgStream();
26 }

◆ msgLvl()

bool AthCommonMsg< AlgTool >::msgLvl ( const MSG::Level lvl) const
inlineinherited

Definition at line 30 of file AthCommonMsg.h.

30 {
31 return this->msgLevel(lvl);
32 }

◆ outputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< AlgTool > >::outputHandles ( ) const
overridevirtualinherited

Return this algorithm's output handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

◆ positionUpdate()

IVertexUpdator::positionUpdateOutcome Trk::KalmanVertexUpdator::positionUpdate ( const xAOD::Vertex & vtx,
const LinearizedTrack * trk,
double trackWeight,
IVertexUpdator::updateMode mode ) const
overridevirtual

Position update method.

The 'mode' parameter is used to indicate whether we want to add or remove a track.

Implements Trk::IVertexUpdator.

Definition at line 126 of file KalmanVertexUpdator.cxx.

127 {
128 // linearized track information
129 const AmgMatrix(5,3)& A = trk->positionJacobian();
130 const AmgMatrix(5,3)& B = trk->momentumJacobian();
131 const AmgVector(5) & trackParameters = trk->expectedParametersAtPCA();
132 const AmgVector(5) & constantTerm = trk->constantTerm();
133 const AmgSymMatrix(5) & trackParametersWeight = trk->expectedWeightAtPCA();
134
135 int sign = (mode == IVertexUpdator::addTrack ? 1 : -1);
136
137 //vertex to be updated
138 const Amg::Vector3D & old_pos = vtx.position();
139 const AmgSymMatrix(3)& old_vrt_weight = vtx.covariancePosition().inverse();
140 ATH_MSG_VERBOSE ("Old vertex weight " << old_vrt_weight);
141
142 //making the intermediate quantities:
143 //W_k = (B^T*G*B)^(-1)
144
145 AmgSymMatrix(3) S = B.transpose()*(trackParametersWeight*B);
146 S = S.inverse().eval();
147
148 //G_b = G_k - G_k*B_k*W_k*B_k^(T)*G_k
149 AmgSymMatrix(5) gB = trackParametersWeight - trackParametersWeight*(B*(S*B.transpose()))*trackParametersWeight.transpose();
150
151 //new vertex weight matrix
152 AmgSymMatrix(3) new_vrt_weight_later_cov = old_vrt_weight + trackWeight * sign * A.transpose()*(gB*A);
153
154 new_vrt_weight_later_cov = new_vrt_weight_later_cov.inverse().eval();
155
156 //new vertex position
157 Amg::Vector3D new_vrt_position = new_vrt_weight_later_cov*(old_vrt_weight * old_pos + trackWeight * sign * A.transpose() * gB *(trackParameters - constantTerm) );
158
159 return IVertexUpdator::positionUpdateOutcome{new_vrt_position, new_vrt_weight_later_cov,trackParametersWeight};
160 }//end of position update method
#define ATH_MSG_VERBOSE(x)
#define AmgSymMatrix(dim)
#define AmgVector(rows)
#define AmgMatrix(rows, cols)
Eigen::Matrix< double, 3, 1 > Vector3D
int sign(int a)
const Amg::Vector3D & position() const
Returns the 3-pos.
Eigen::Matrix< double, 3, 1 > Vector3D

◆ remove()

xAOD::Vertex * Trk::KalmanVertexUpdator::remove ( xAOD::Vertex & vtx,
VxTrackAtVertex & trk ) const
overridevirtual

Method removing already added track from the vertex estimate.

Implements Trk::IVertexUpdator.

Definition at line 42 of file KalmanVertexUpdator.cxx.

43 {
44 return update(vtx,trk,IVertexUpdator::removeTrack);
45 }

◆ renounce()

std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void > AthCommonDataStore< AthCommonMsg< AlgTool > >::renounce ( T & h)
inlineprotectedinherited

Definition at line 380 of file AthCommonDataStore.h.

381 {
382 h.renounce();
384 }
std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void > renounce(T &h)

◆ renounceArray()

void AthCommonDataStore< AthCommonMsg< AlgTool > >::renounceArray ( SG::VarHandleKeyArray & handlesArray)
inlineprotectedinherited

remove all handles from I/O resolution

Definition at line 364 of file AthCommonDataStore.h.

364 {
366 }

◆ sysInitialize()

virtual StatusCode AthCommonDataStore< AthCommonMsg< AlgTool > >::sysInitialize ( )
overridevirtualinherited

Perform system initialization for an algorithm.

We override this to declare all the elements of handle key arrays at the end of initialization. See comments on updateVHKA.

Reimplemented in asg::AsgMetadataTool, AthCheckedComponent< AthAlgTool >, AthCheckedComponent<::AthAlgTool >, and DerivationFramework::CfAthAlgTool.

◆ sysStart()

virtual StatusCode AthCommonDataStore< AthCommonMsg< AlgTool > >::sysStart ( )
overridevirtualinherited

Handle START transition.

We override this in order to make sure that conditions handle keys can cache a pointer to the conditions container.

◆ trackParametersChi2() [1/3]

float Trk::KalmanVertexUpdator::trackParametersChi2 ( const Amg::Vector3D & new_position,
const LinearizedTrack * trk,
const AmgSymMatrix(5) & trkParametersWeight )
staticprivate

Definition at line 175 of file KalmanVertexUpdator.cxx.

175 {
176
177 // track information
178 const AmgMatrix(5,3)& A = trk->positionJacobian();
179 const AmgMatrix(5,3) & B = trk->momentumJacobian();
180 const AmgVector(5) & trkParameters = trk->expectedParametersAtPCA();
181
182 //calculation of S matrix
183 AmgSymMatrix(3) Sm = B.transpose()*(trkParametersWeight*B);
184 AmgSymMatrix(3) Sm_inverse;
185 bool invertible;
186 Sm.computeInverseWithCheck(Sm_inverse,invertible);
187 if(!invertible) {
188 return -999.;
189 }
190 Sm= Sm_inverse.eval();
191
192 const AmgVector(5)& theResidual = trk->constantTerm();
193
194 //refitted track momentum
195 Amg::Vector3D newTrackMomentum = Sm*B.transpose()*trkParametersWeight*(trkParameters - theResidual - A*new_position);
196
197 //refitted track parameters
198 AmgVector(5) refTrackParameters = theResidual + A * new_position + B * newTrackMomentum;
199
200 //parameters difference
201 AmgVector(5) paramDifference = trkParameters - refTrackParameters;
202
203 return paramDifference.transpose() * ( trkParametersWeight * paramDifference );;
204
205 }
if(febId1==febId2)

◆ trackParametersChi2() [2/3]

float Trk::KalmanVertexUpdator::trackParametersChi2 ( const IVertexUpdator::positionUpdateOutcome & new_vtx,
const LinearizedTrack * trk ) const
overridevirtual

Implements Trk::IVertexUpdator.

Definition at line 212 of file KalmanVertexUpdator.cxx.

212 {
213 return trackParametersChi2(new_vtx.position, trk, new_vtx.trkParametersWeight);
214 }//end of chi2 increment method
virtual float trackParametersChi2(const xAOD::Vertex &new_vtx, const LinearizedTrack *trk) const override
Method calculating the interstep Chi2 increment.

◆ trackParametersChi2() [3/3]

float Trk::KalmanVertexUpdator::trackParametersChi2 ( const xAOD::Vertex & new_vtx,
const LinearizedTrack * trk ) const
overridevirtual

Method calculating the interstep Chi2 increment.

Implements Trk::IVertexUpdator.

Definition at line 164 of file KalmanVertexUpdator.cxx.

165 {
166 return trackParametersChi2(new_vtx.position(), trk, trk->expectedWeightAtPCA());
167 }//end of chi2 increment method

◆ update()

xAOD::Vertex * Trk::KalmanVertexUpdator::update ( xAOD::Vertex & vtx,
const VxTrackAtVertex & trk,
IVertexUpdator::updateMode mode ) const
private

Method where the fit is actually done.

Definition at line 48 of file KalmanVertexUpdator.cxx.

49 {
50
51 //getting tracks at vertex
52 std::vector<Trk::VxTrackAtVertex> & tracksAtVertex = vtx.vxTrackAtVertex();
53
54 //in case one wants to remove the track, one should be sure that this track
55 //is already fitted to the vertex
56 auto righttrack = std::find(tracksAtVertex.begin(), tracksAtVertex.end(), trk);
57 // if it is not part of the vertex (which includes a possible empty vertex), we either add it or give up
58 // in case we are removing tracks
59 if (righttrack == tracksAtVertex.end())
60 {
61 ATH_MSG_VERBOSE ("The track requested for removal or adding is not found in the vector of tracks");
62 // removal - can not proceed
63 if (mode == IVertexUpdator::removeTrack) {
64 ATH_MSG_ERROR ("During remove track has to be already attached to the vertex");
65 msg(MSG::ERROR) << "The copy of initial xAOD::Vertex returned" << endmsg;
66 return &vtx;
67 }
68 // addition - here this is expected behaviour
69
70 righttrack = tracksAtVertex.insert(tracksAtVertex.end(),trk);
71 ATH_MSG_VERBOSE ("Updating vertex with new track which is still not attached to vertex. Adding it before updating...");
72
73 }
74
75 //all safe, call the position update
76 // chi and ndf
77 // track weight and old vertex
78
79 double trkWeight = trk.weight();
80
81 AmgSymMatrix(3) vrt_inverse;
82 bool invertible;
83 vtx.covariancePosition().computeInverseWithCheck(vrt_inverse,invertible);
84
85 if(!invertible) {
86 ATH_MSG_VERBOSE ("The vertex's cov is not invertible, quit updating.");
87 return &vtx;
88 }
89 const IVertexUpdator::positionUpdateOutcome & fit_vrt = positionUpdate( vtx, trk.linState(), trkWeight, mode);
90
91 double chi2 = vtx.chiSquared();
92 double trk_chi = trackParametersChi2( fit_vrt, trk.linState() );
93 if(trk_chi==-999.){
94 ATH_MSG_VERBOSE ("The track's cov is not invertible, quit updating.");
95 return &vtx;
96 }
97
98 const int sign = (mode == IVertexUpdator::addTrack ? 1 : -1);
99 chi2 += sign * (vertexPositionChi2(vtx, fit_vrt) + trkWeight * trk_chi);
100
101 //number of degrees of freedom
102 double ndf = vtx.numberDoF();
103 ndf += sign * trkWeight * (2.0);
104
105 //forming a final xAOD::Vertex
106 vtx.setPosition( fit_vrt.position );
107 vtx.setCovariancePosition( fit_vrt.covariancePosition );
108 vtx.setFitQuality( chi2, ndf );
109
110 //playing with vector of fitted tracks and compatibility
111 if( mode == IVertexUpdator::addTrack )
112 {
113 //changes towards fit quality
114 righttrack->setWeight( trkWeight );
115 righttrack->setTrackQuality( Trk::FitQuality(trk_chi, 2 * trkWeight) );
116 }
117 else
118 {
119 tracksAtVertex.erase( righttrack );
120 }
121
122 return &vtx;
123 }//end of update method
#define ATH_MSG_ERROR(x)
virtual float vertexPositionChi2(const xAOD::Vertex &old_vtx, const xAOD::Vertex &new_vtx) const override
Method calculating the vertex displacement-related part of the chi2.
virtual IVertexUpdator::positionUpdateOutcome positionUpdate(const xAOD::Vertex &vtx, const LinearizedTrack *trk, double trackWeight, IVertexUpdator::updateMode mode) const override
Position update method.
void setCovariancePosition(const AmgSymMatrix(3)&covariancePosition)
Sets the vertex covariance matrix.
float numberDoF() const
Returns the number of degrees of freedom of the vertex fit as float.
void setPosition(const Amg::Vector3D &position)
Sets the 3-position.
float chiSquared() const
Returns the of the vertex fit as float.
std::vector< Trk::VxTrackAtVertex > & vxTrackAtVertex()
Non-const access to the VxTrackAtVertex vector.
void setFitQuality(float chiSquared, float numberDoF)
Set the 'Fit Quality' information.
double chi2(TH1 *h0, TH1 *h1)

◆ updateVHKA()

void AthCommonDataStore< AthCommonMsg< AlgTool > >::updateVHKA ( Gaudi::Details::PropertyBase & )
inlineinherited

Definition at line 308 of file AthCommonDataStore.h.

308 {
309 // debug() << "updateVHKA for property " << p.name() << " " << p.toString()
310 // << " size: " << m_vhka.size() << endmsg;
311 for (auto &a : m_vhka) {
313 for (auto k : keys) {
314 k->setOwner(this);
315 }
316 }
317 }
std::vector< SG::VarHandleKeyArray * > m_vhka

◆ vertexPositionChi2() [1/3]

float Trk::KalmanVertexUpdator::vertexPositionChi2 ( const xAOD::Vertex & old_vtx,
const Amg::Vector3D & new_position )
staticprivate

Definition at line 206 of file KalmanVertexUpdator.cxx.

206 {
207 AmgSymMatrix(3) old_wrt_weight = old_vtx.covariancePosition().inverse();
208 Amg::Vector3D posDifference = new_position - old_vtx.position();
209 return posDifference.transpose()*(old_wrt_weight*posDifference);
210 }

◆ vertexPositionChi2() [2/3]

float Trk::KalmanVertexUpdator::vertexPositionChi2 ( const xAOD::Vertex & old_vtx,
const IVertexUpdator::positionUpdateOutcome & new_vtx ) const
overridevirtual

Implements Trk::IVertexUpdator.

Definition at line 216 of file KalmanVertexUpdator.cxx.

216 {
217 return vertexPositionChi2(old_vtx, new_vtx.position);
218 }//end of vertex position chi2

◆ vertexPositionChi2() [3/3]

float Trk::KalmanVertexUpdator::vertexPositionChi2 ( const xAOD::Vertex & old_vtx,
const xAOD::Vertex & new_vtx ) const
overridevirtual

Method calculating the vertex displacement-related part of the chi2.

Implements Trk::IVertexUpdator.

Definition at line 169 of file KalmanVertexUpdator.cxx.

170 {
171 return vertexPositionChi2(old_vtx, new_vtx.position());
172 }//end of vertex position chi2

Member Data Documentation

◆ m_detStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< AlgTool > >::m_detStore
privateinherited

Pointer to StoreGate (detector store by default)

Definition at line 393 of file AthCommonDataStore.h.

◆ m_evtStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< AlgTool > >::m_evtStore
privateinherited

Pointer to StoreGate (event store by default)

Definition at line 390 of file AthCommonDataStore.h.

◆ m_varHandleArraysDeclared

bool AthCommonDataStore< AthCommonMsg< AlgTool > >::m_varHandleArraysDeclared
privateinherited

Definition at line 399 of file AthCommonDataStore.h.

◆ m_vhka

std::vector<SG::VarHandleKeyArray*> AthCommonDataStore< AthCommonMsg< AlgTool > >::m_vhka
privateinherited

Definition at line 398 of file AthCommonDataStore.h.


The documentation for this class was generated from the following files: