recob::Track Class Reference

Track from a non-cascading particle.A recob::Track consists of a recob::TrackTrajectory, plus additional members relevant for a "fitted" track: More...

#include <Track.h>

Public Types
using	Point_t = tracking::Point_t
using	Vector_t = tracking::Vector_t
using	Positions_t = tracking::Positions_t
using	Momenta_t = tracking::Momenta_t
using	Rotation_t = tracking::Rotation_t
using	TrajectoryPoint_t = tracking::TrajectoryPoint_t
using	SMatrixSym55 = tracking::SMatrixSym55
using	SMatrixSym66 = tracking::SMatrixSym66
using	SMatrix65 = tracking::SMatrix65
using	SMatrix56 = tracking::SMatrix56
using	SVector6 = tracking::SVector6
using	SVector5 = tracking::SVector5
using	PointFlags_t = TrackTrajectory::PointFlags_t
using	Flags_t = TrackTrajectory::Flags_t

Public Member Functions
	Track ()=default
	Track (TrackTrajectory const &Traj, int PId, float Chi2, int Ndof, SMatrixSym55 const &CovVertex, SMatrixSym55 const &CovEnd, int tkID)
	Track (TrackTrajectory &&Traj, int PId, float Chi2, int Ndof, SMatrixSym55 &&CovVertex, SMatrixSym55 &&CovEnd, int tkID)
	Track (Positions_t &&positions, Momenta_t &&momenta, Flags_t &&flags, bool hasMomenta, int PId, float Chi2, int Ndof, SMatrixSym55 &&CovVertex, SMatrixSym55 &&CovEnd, int tkID)
const recob::TrackTrajectory &	Trajectory () const
	Access to the stored recob::TrackTrajectory. More...
size_t	NumberTrajectoryPoints () const
	Various functions related to the presence and the number of (valid) points. More...
size_t	NPoints () const
size_t	FirstPoint () const
size_t	LastPoint () const
size_t	FirstValidPoint () const
size_t	NextValidPoint (size_t index) const
size_t	PreviousValidPoint (size_t index) const
size_t	LastValidPoint () const
bool	HasPoint (size_t i) const
bool	HasValidPoint (size_t i) const
unsigned int	CountValidPoints () const
TrajectoryPoint_t	TrajectoryPoint (size_t i) const
	Access to i-th TrajectoryPoint or its Flags. More...
PointFlags_t const &	FlagsAtPoint (size_t i) const
Point_t const &	Start () const
	Access to track position at different points. More...
Point_t const &	Vertex () const
Point_t const &	End () const
Point_t const &	LocationAtPoint (size_t i) const
Vector_t	StartDirection () const
	Access to track direction at different points. More...
Vector_t	VertexDirection () const
Vector_t	EndDirection () const
Vector_t	DirectionAtPoint (size_t i) const
bool	HasMomentum () const
double	MomentumAtPoint (unsigned int p) const
double	VertexMomentum () const
double	StartMomentum () const
double	EndMomentum () const
Vector_t const &	VertexMomentumVector () const
Vector_t const &	StartMomentumVector () const
Vector_t const &	EndMomentumVector () const
Vector_t const &	MomentumVectorAtPoint (size_t i) const
const SMatrixSym55 &	StartCovariance () const
	Access to covariance matrices. More...
const SMatrixSym55 &	VertexCovariance () const
const SMatrixSym55 &	EndCovariance () const
std::pair< Point_t, Point_t >	Extent () const
	Access to position, momentum or covariance at the start and end of the track. More...
std::pair< Vector_t, Vector_t >	Direction () const
std::pair< SMatrixSym55, SMatrixSym55 >	Covariances () const
double	Length (size_t p=0) const
	Access to various track properties. More...
float	Chi2 () const
float	Chi2PerNdof () const
int	Ndof () const
int	ParticleId () const
double	Theta () const
	Access to spherical or geographical angles at vertex or at any point. More...
double	Theta (size_t p) const
double	Phi () const
double	Phi (size_t p) const
double	ZenithAngle () const
double	ZenithAngle (size_t p) const
double	AzimuthAngle () const
double	AzimuthAngle (size_t p) const
Rotation_t	GlobalToLocalRotationAtPoint (size_t p) const
Rotation_t	LocalToGlobalRotationAtPoint (size_t p) const
SVector5	VertexParametersLocal5D () const
	Accessors to track parameters and covariance matrices in Local5D and Global6D coordinates. More...
SVector5	EndParametersLocal5D () const
const SMatrixSym55 &	VertexCovarianceLocal5D () const
const SMatrixSym55 &	EndCovarianceLocal5D () const
SVector6	VertexParametersGlobal6D () const
SVector6	EndParametersGlobal6D () const
SMatrixSym66	VertexCovarianceGlobal6D () const
SMatrixSym66	EndCovarianceGlobal6D () const
Templated version of homonymous functions to access to position, direction, momentum information, and covariances.
template<typename T >
T	Start () const
	Start position. Use e.g. as: More...
template<typename T >
T	Vertex () const
	Start position. Use e.g. as: More...
template<typename T >
T	End () const
	End position. Use e.g. as: More...
template<typename T >
T	LocationAtPoint (unsigned int p) const
	Position at point p. Use e.g. as: More...
template<typename T >
T	StartDirection () const
	Start direction. Use e.g. as: More...
template<typename T >
T	VertexDirection () const
	Start direction. Use e.g. as: More...
template<typename T >
T	EndDirection () const
	End direction. Use e.g. as: More...
template<typename T >
T	DirectionAtPoint (unsigned int p) const
	Direction at point p. Use e.g. as: More...
template<typename T >
T	StartMomentumVector () const
	Momentum vector at start point. Use e.g. as: More...
template<typename T >
T	VertexMomentumVector () const
	Momentum vector at start point. Use e.g. as: More...
template<typename T >
T	EndMomentumVector () const
	Momentum vector at end point. Use e.g. as: More...
template<typename T >
T	MomentumVectorAtPoint (unsigned int p) const
	Momentum vector at point p. Use e.g. as: More...
template<typename T >
T	StartCovariance () const
	Covariance matrix at start point. Use e.g. as: More...
template<typename T >
T	VertexCovariance () const
	Covariance matrix at start point. Use e.g. as: More...
template<typename T >
T	EndCovariance () const
	Covariance matrix at end point. Use e.g. as: More...
template<typename T >
std::pair< T, T >	Extent () const
	Position at start and end points. Use e.g. as: More...
template<typename T >
std::pair< T, T >	Direction () const
	Direction at start and end points. Use e.g. as: More...
template<typename T >
T	GlobalToLocalRotationAtPoint (unsigned int p) const
	Returns a rotation matrix that brings trajectory direction along z. Use e.g. as: More...
template<typename T >
T	LocalToGlobalRotationAtPoint (unsigned int p) const
	Returns a rotation matrix bringing relative directions to global. Use e.g. as: More...

Protected Attributes
TrackTrajectory	fTraj
	Stored trajectory data member. More...
int	fPId = 0
	Particle ID hypothesis used in the fit (if any) More...
float	fChi2 = -1.
	Fit chi2. More...
int	fNdof = 0.
	Number of degrees of freedom of the fit. More...
SMatrixSym55	fCovVertex
	Covariance matrix (local 5D representation) at start point (vertex) More...
SMatrixSym55	fCovEnd
	Covariance matrix (local 5D representation) at end point. More...
int	fID = -1
	track's ID More...

Friends
std::ostream &	operator<< (std::ostream &stream, Track const &a)
int	ID () const
bool	operator< (const Track &a, const Track &b)

Detailed Description

Track from a non-cascading particle.

A recob::Track consists of a recob::TrackTrajectory, plus additional members relevant for a "fitted" track:

• fit χ
• number of degrees of freedom
• particle ID hypothesis used in the fit (if any)
• covariance matrices at start (vertex) and end positions.

Please refer to the recob::TrackTrajectory documentation for more information about it; for a discussion on the object type for coordinates see recob::tracking::Coord_t.

In terms of interface, recob::Track extends recob::TrackTrajectory, so that methods of the stored recob::TrackTrajectory can be called directly from the recob::Track interface, e.g.:

size_t       NumberTrajectoryPoints()         const { return fTraj.NumberTrajectoryPoints(); }

Two different parameter conventions are used in a recob::Track, and functions to convert from one to the other are provided:

1. Trajectory points and momenta (or directions) are in form of 3-vectors, corresponding to a global Cartesian 6D representation
2. Covariance matrices are stored in a Local 5D representation (so that the covariance matrix is invertible), where the parameters are defined on the plane orthogonal to the track direction at a given track point. By construction the local parameters of the track itself are (0,0,0,0,1/p). See lardataobj/RecoBase/TrackingPlane.h for more information.

Definition at line 49 of file bj/lardataobj/RecoBase/Track.h.

Member Typedef Documentation

using recob::Track::Flags_t = TrackTrajectory::Flags_t

Definition at line 68 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::Momenta_t = tracking::Momenta_t

Definition at line 56 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::Point_t = tracking::Point_t

Definition at line 53 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::PointFlags_t = TrackTrajectory::PointFlags_t

Definition at line 67 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::Positions_t = tracking::Positions_t

Definition at line 55 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::Rotation_t = tracking::Rotation_t

Definition at line 57 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::SMatrix56 = tracking::SMatrix56

Definition at line 63 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::SMatrix65 = tracking::SMatrix65

Definition at line 62 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::SMatrixSym55 = tracking::SMatrixSym55

Definition at line 60 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::SMatrixSym66 = tracking::SMatrixSym66

Definition at line 61 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::SVector5 = tracking::SVector5

Definition at line 65 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::SVector6 = tracking::SVector6

Definition at line 64 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::TrajectoryPoint_t = tracking::TrajectoryPoint_t

Definition at line 58 of file bj/lardataobj/RecoBase/Track.h.

using recob::Track::Vector_t = tracking::Vector_t

Definition at line 54 of file bj/lardataobj/RecoBase/Track.h.

Constructor & Destructor Documentation

recob::Track::Track ( )

default

recob::Track::Track ( TrackTrajectory const &  Traj, int  PId, float  Chi2, int  Ndof, SMatrixSym55 const &  CovVertex, SMatrixSym55 const &  CovEnd, int  tkID  )

inline

Definition at line 85 of file bj/lardataobj/RecoBase/Track.h.

      : fTraj(Traj), fPId(PId), fChi2(Chi2), fNdof(Ndof), fCovVertex(CovVertex), fCovEnd(CovEnd),fID(tkID) { };

recob::Track::Track ( TrackTrajectory &&  Traj, int  PId, float  Chi2, int  Ndof, SMatrixSym55 &&  CovVertex, SMatrixSym55 &&  CovEnd, int  tkID  )

inline

Definition at line 89 of file bj/lardataobj/RecoBase/Track.h.

      : fTraj(std::move(Traj)), fPId(PId), fChi2(Chi2), fNdof(Ndof), fCovVertex(std::move(CovVertex)), fCovEnd(std::move(CovEnd)),fID(tkID) { };

recob::Track::Track ( Positions_t &&  positions, Momenta_t &&  momenta, Flags_t &&  flags, bool  hasMomenta, int  PId, float  Chi2, int  Ndof, SMatrixSym55 &&  CovVertex, SMatrixSym55 &&  CovEnd, int  tkID  )

inline

Definition at line 93 of file bj/lardataobj/RecoBase/Track.h.

      : fTraj(std::move(positions),std::move(momenta),std::move(flags),hasMomenta), fPId(PId), fChi2(Chi2), fNdof(Ndof), fCovVertex(std::move(CovVertex)), fCovEnd(std::move(CovEnd)),fID(tkID) { };

Member Function Documentation

double recob::Track::AzimuthAngle ( ) const

inline

Definition at line 182 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.AzimuthAngle(); }

double recob::Track::AzimuthAngle ( size_t  p ) const

inline

Definition at line 183 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.AzimuthAngle(p); }

float recob::Track::Chi2 ( ) const

inline

Definition at line 168 of file bj/lardataobj/RecoBase/Track.h.

{ return fChi2; }

float recob::Track::Chi2PerNdof ( ) const

inline

Definition at line 169 of file bj/lardataobj/RecoBase/Track.h.

{ return fNdof>0 ? fChi2/float(fNdof) : util::kBogusF; }

unsigned int recob::Track::CountValidPoints ( ) const

inline

Definition at line 112 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.CountValidPoints(); }

std::pair<SMatrixSym55, SMatrixSym55> recob::Track::Covariances ( ) const

inline

Definition at line 162 of file bj/lardataobj/RecoBase/Track.h.

{ return std::pair<SMatrixSym55, SMatrixSym55>(fCovVertex,fCovEnd); }

std::pair<Vector_t, Vector_t> recob::Track::Direction ( ) const

inline

Definition at line 161 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Direction(); }

template<typename T >

std::pair<T, T> recob::Track::Direction ( ) const

inline

Direction at start and end points. Use e.g. as:

TVector3 startdir, enddir; std::tie(startdir, enddir) = track.Direction<TVector3>(); 

.

Definition at line 266 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Direction<T>(); }

Vector_t recob::Track::DirectionAtPoint ( size_t  i ) const

inline

Definition at line 134 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.DirectionAtPoint(i); }

template<typename T >

T recob::Track::DirectionAtPoint ( unsigned int  p ) const

inline

Direction at point p. Use e.g. as:

TVector3 dir = track.DirectionAtPoint<TVector3>(p); 

.

Definition at line 239 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.DirectionAtPoint<T>(p); }

Point_t const& recob::Track::End ( ) const

inline

Definition at line 125 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.End(); }

template<typename T >

T recob::Track::End ( ) const

inline

End position. Use e.g. as:

TVector3 end = track.End<TVector3>(); 

.

Definition at line 224 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.End<T>(); }

T Track::EndCovariance ( ) const

inline

Definition at line 155 of file bj/lardataobj/RecoBase/Track.h.

{ return fCovEnd; }

template<typename T >

T recob::Track::EndCovariance ( ) const

inline

Covariance matrix at end point. Use e.g. as:

TMatrixD endcov = track.EndCovariance<TMatrixD>(); 

.

Track::SMatrixSym66 Track::EndCovarianceGlobal6D

(

)

const

Definition at line 85 of file bj/lardataobj/RecoBase/Track.cxx.

                                                       {
    return tracking::Plane::Local5DToGlobal6DCovariance(fCovEnd,HasMomentum(),fTraj.EndMomentumVector(),fTraj.EndDirection());
  }

const SMatrixSym55& recob::Track::EndCovarianceLocal5D ( ) const

inline

Definition at line 207 of file bj/lardataobj/RecoBase/Track.h.

{ return fCovEnd; }

Vector_t recob::Track::EndDirection ( ) const

inline

Definition at line 133 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.EndDirection(); }

template<typename T >

T recob::Track::EndDirection ( ) const

inline

End direction. Use e.g. as:

TVector3 enddir = track.EndDirection<TVector3>(); 

.

Definition at line 236 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.EndDirection<T>(); }

double recob::Track::EndMomentum ( ) const

inline

Definition at line 144 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.EndMomentum();  }

Vector_t const& recob::Track::EndMomentumVector ( ) const

inline

Definition at line 147 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.EndMomentumVector(); }

template<typename T >

T recob::Track::EndMomentumVector ( ) const

inline

Momentum vector at end point. Use e.g. as:

TVector3 endmom = track.EndMomentumVector<TVector3>(); 

.

Definition at line 248 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.EndMomentumVector<T>(); }

Track::SVector6 Track::EndParametersGlobal6D

(

)

const

Definition at line 60 of file bj/lardataobj/RecoBase/Track.cxx.

                                                   {
    Track::SVector6 result;
    result[0] = End().X();
    result[1] = End().Y();
    result[2] = End().Z();
    result[3] = EndDirection().X();
    result[4] = EndDirection().Y();
    result[5] = EndDirection().Z();
    return result;
  }

Track::SVector5 Track::EndParametersLocal5D

(

)

const

Definition at line 76 of file bj/lardataobj/RecoBase/Track.cxx.

                                                  {
    //return tracking::Plane::Global6DToLocal5DParameters(EndParametersGlobal6D(), fTraj.End(), fTraj.EndDirection());
    return Track::SVector5(0.,0.,0.,0.,(HasMomentum() ? 1./EndMomentum() : 1. ));
  }

std::pair<Point_t, Point_t> recob::Track::Extent ( ) const

inline

Access to position, momentum or covariance at the start and end of the track.

Definition at line 160 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Extent(); }

template<typename T >

std::pair<T, T> recob::Track::Extent ( ) const

inline

Position at start and end points. Use e.g. as:

TVector3 start, end; std::tie(start, end) = track.Extent<TVector3>(); 

.

Definition at line 263 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Extent<T>(); }

size_t recob::Track::FirstPoint ( ) const

inline

Definition at line 104 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.FirstPoint(); }

size_t recob::Track::FirstValidPoint ( ) const

inline

Definition at line 106 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.FirstValidPoint(); }

PointFlags_t const& recob::Track::FlagsAtPoint ( size_t  i ) const

inline

Definition at line 118 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.FlagsAtPoint(i); }

Rotation_t recob::Track::GlobalToLocalRotationAtPoint ( size_t  p ) const

inline

Definition at line 190 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.GlobalToLocalRotationAtPoint(p); }

template<typename T >

T recob::Track::GlobalToLocalRotationAtPoint ( unsigned int  p ) const

inline

Returns a rotation matrix that brings trajectory direction along z. Use e.g. as:

TMatrixD rot = track.GlobalToLocalRotationAtPoint<TMatrixD>(p); 

.

Definition at line 269 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.GlobalToLocalRotationAtPoint<T>(p); }

bool recob::Track::HasMomentum ( ) const

inline

Access to track momentum at different points. The user must check that HasMomentum() returns true to ensure the validity of the result of these functions.

Definition at line 140 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.HasMomentum(); }

bool recob::Track::HasPoint ( size_t  i ) const

inline

Definition at line 110 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.HasPoint(i); }

bool recob::Track::HasValidPoint ( size_t  i ) const

inline

Definition at line 111 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.HasValidPoint(i); }

int recob::Track::ID ( ) const

inline

Track ID number, needed to relate a track to its possible track parent (e.g. in case of a refit). Note that art Assns to the same object are not currently supported. The < operator is based on the track ID.

Definition at line 198 of file bj/lardataobj/RecoBase/Track.h.

{ return fID; }

size_t recob::Track::LastPoint ( ) const

inline

Definition at line 105 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.LastPoint(); }

size_t recob::Track::LastValidPoint ( ) const

inline

Definition at line 109 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.LastValidPoint(); }

double recob::Track::Length ( size_t  p = 0 ) const

inline

Access to various track properties.

Definition at line 167 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Length(p); }

Rotation_t recob::Track::LocalToGlobalRotationAtPoint ( size_t  p ) const

inline

Definition at line 191 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.LocalToGlobalRotationAtPoint(p); }

template<typename T >

T recob::Track::LocalToGlobalRotationAtPoint ( unsigned int  p ) const

inline

Returns a rotation matrix bringing relative directions to global. Use e.g. as:

TMatrixD rot = track.LocalToGlobalRotationAtPoint<TMatrixD>(p); 

.

Definition at line 272 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.LocalToGlobalRotationAtPoint<T>(p); }

Point_t const& recob::Track::LocationAtPoint ( size_t  i ) const

inline

Definition at line 126 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.LocationAtPoint(i); }

template<typename T >

T recob::Track::LocationAtPoint ( unsigned int  p ) const

inline

Position at point p. Use e.g. as:

TVector3 pos = track.LocationAtPoint<TVector3>(p); 

.

Definition at line 227 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.LocationAtPoint<T>(p); }

double recob::Track::MomentumAtPoint ( unsigned int  p ) const

inline

Definition at line 141 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.MomentumAtPoint(p); }

Vector_t const& recob::Track::MomentumVectorAtPoint ( size_t  i ) const

inline

Definition at line 148 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.MomentumVectorAtPoint(i); }

template<typename T >

T recob::Track::MomentumVectorAtPoint ( unsigned int  p ) const

inline

Momentum vector at point p. Use e.g. as:

TVector3 mom = track.MomentumVectorAtPoint<TVector3>(p); 

.

Definition at line 251 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.MomentumVectorAtPoint<T>(p); }

int recob::Track::Ndof ( ) const

inline

Definition at line 170 of file bj/lardataobj/RecoBase/Track.h.

{ return fNdof; }

size_t recob::Track::NextValidPoint ( size_t  index ) const

inline

Definition at line 107 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.NextValidPoint(index); }

size_t recob::Track::NPoints ( ) const

inline

Definition at line 103 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.NPoints(); }

size_t recob::Track::NumberTrajectoryPoints ( ) const

inline

Various functions related to the presence and the number of (valid) points.

Definition at line 102 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.NumberTrajectoryPoints(); }

int recob::Track::ParticleId ( ) const

inline

Definition at line 171 of file bj/lardataobj/RecoBase/Track.h.

{ return fPId; }

double recob::Track::Phi ( ) const

inline

Definition at line 178 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Phi(); }

double recob::Track::Phi ( size_t  p ) const

inline

Definition at line 179 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Phi(p); }

size_t recob::Track::PreviousValidPoint ( size_t  index ) const

inline

Definition at line 108 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.PreviousValidPoint(index); }

Point_t const& recob::Track::Start ( ) const

inline

Access to track position at different points.

Definition at line 123 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Start(); }

template<typename T >

T recob::Track::Start ( ) const

inline

Start position. Use e.g. as:

TVector3 start = track.Start<TVector3>(); 

.

Definition at line 218 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Start<T>(); }

T Track::StartCovariance ( ) const

inline

Access to covariance matrices.

Definition at line 153 of file bj/lardataobj/RecoBase/Track.h.

{ return fCovVertex; }

template<typename T >

T recob::Track::StartCovariance ( ) const

inline

Covariance matrix at start point. Use e.g. as:

TMatrixD startcov = track.StartCovariance<TMatrixD>(); 

.

Vector_t recob::Track::StartDirection ( ) const

inline

Access to track direction at different points.

Definition at line 131 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.StartDirection(); }

template<typename T >

T recob::Track::StartDirection ( ) const

inline

Start direction. Use e.g. as:

TVector3 startdir = track.StartDirection<TVector3>(); 

.

Definition at line 230 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.StartDirection<T>(); }

double recob::Track::StartMomentum ( ) const

inline

Definition at line 143 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.StartMomentum(); }

Vector_t const& recob::Track::StartMomentumVector ( ) const

inline

Definition at line 146 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.StartMomentumVector(); }

template<typename T >

T recob::Track::StartMomentumVector ( ) const

inline

Momentum vector at start point. Use e.g. as:

TVector3 startmom = track.StartMomentumVector<TVector3>(); 

.

Definition at line 242 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.StartMomentumVector<T>(); }

double recob::Track::Theta ( ) const

inline

Access to spherical or geographical angles at vertex or at any point.

Definition at line 176 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Theta(); }

double recob::Track::Theta ( size_t  p ) const

inline

Definition at line 177 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Theta(p); }

const recob::TrackTrajectory& recob::Track::Trajectory ( ) const

inline

Access to the stored recob::TrackTrajectory.

Definition at line 98 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj; }

TrajectoryPoint_t recob::Track::TrajectoryPoint ( size_t  i ) const

inline

Access to i-th TrajectoryPoint or its Flags.

Definition at line 117 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.TrajectoryPoint(i); }

Point_t const& recob::Track::Vertex ( ) const

inline

Definition at line 124 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Vertex(); }

template<typename T >

T recob::Track::Vertex ( ) const

inline

Start position. Use e.g. as:

TVector3 vertex = track.Vertex<TVector3>(); 

.

Definition at line 221 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.Vertex<T>(); }

const SMatrixSym55& recob::Track::VertexCovariance ( ) const

inline

Definition at line 154 of file bj/lardataobj/RecoBase/Track.h.

{ return fCovVertex; }

template<typename T >

T recob::Track::VertexCovariance ( ) const

inline

Covariance matrix at start point. Use e.g. as:

TMatrixD vertexcov = track.VertexCovariance<TMatrixD>(); 

.

Definition at line 257 of file bj/lardataobj/RecoBase/Track.h.

{ return StartCovariance<T>(); }

Track::SMatrixSym66 Track::VertexCovarianceGlobal6D

(

)

const

Definition at line 81 of file bj/lardataobj/RecoBase/Track.cxx.

                                                          {
    return tracking::Plane::Local5DToGlobal6DCovariance(fCovVertex,HasMomentum(),fTraj.VertexMomentumVector(),fTraj.VertexDirection());
  }

const SMatrixSym55& recob::Track::VertexCovarianceLocal5D ( ) const

inline

Definition at line 206 of file bj/lardataobj/RecoBase/Track.h.

{ return fCovVertex; }

Vector_t recob::Track::VertexDirection ( ) const

inline

Definition at line 132 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.VertexDirection(); }

template<typename T >

T recob::Track::VertexDirection ( ) const

inline

Start direction. Use e.g. as:

TVector3 vertexdir = track.VertexDirection<TVector3>(); 

.

Definition at line 233 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.VertexDirection<T>(); }

double recob::Track::VertexMomentum ( ) const

inline

Definition at line 142 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.VertexMomentum(); }

Vector_t const& recob::Track::VertexMomentumVector ( ) const

inline

Definition at line 145 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.VertexMomentumVector() ; }

template<typename T >

T recob::Track::VertexMomentumVector ( ) const

inline

Momentum vector at start point. Use e.g. as:

TVector3 vertexmom = track.VertexMomentumVector<TVector3>(); 

.

Definition at line 245 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.VertexMomentumVector<T>(); }

Track::SVector6 Track::VertexParametersGlobal6D

(

)

const

Definition at line 49 of file bj/lardataobj/RecoBase/Track.cxx.

                                                      {
    Track::SVector6 result;
    result[0] = Vertex().X();
    result[1] = Vertex().Y();
    result[2] = Vertex().Z();
    result[3] = VertexDirection().X();
    result[4] = VertexDirection().Y();
    result[5] = VertexDirection().Z();
    return result;
  }

Track::SVector5 Track::VertexParametersLocal5D

(

)

const

Accessors to track parameters and covariance matrices in Local5D and Global6D coordinates.

Definition at line 71 of file bj/lardataobj/RecoBase/Track.cxx.

                                                     {
    //return tracking::Plane::Global6DToLocal5DParameters(VertexParametersGlobal6D(), fTraj.Vertex(), fTraj.VertexDirection());
    return Track::SVector5(0.,0.,0.,0.,(HasMomentum() ? 1./VertexMomentum() : 1. ));
  }

double recob::Track::ZenithAngle ( ) const

inline

Definition at line 180 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.ZenithAngle(); }

double recob::Track::ZenithAngle ( size_t  p ) const

inline

Definition at line 181 of file bj/lardataobj/RecoBase/Track.h.

{ return fTraj.ZenithAngle(p); }

Friends And Related Function Documentation

bool operator< ( const Track &  a, const Track &  b  )

friend

Definition at line 40 of file bj/lardataobj/RecoBase/Track.cxx.

  {
    if(a.ID() != b. ID())
      return a.ID() < b.ID();

    return false; //They are equal
  }

std::ostream& operator<< ( std::ostream &  stream, Track const &  a  )

friend

Definition at line 21 of file bj/lardataobj/RecoBase/Track.cxx.

  {
    auto const& start = a.VertexDirection();
    auto const& end   = a.EndDirection();
    stream << std::setiosflags(std::ios::fixed) << std::setprecision(3)
           << "\n Track ID "       << std::setw(4) << std::right << a.ID()
           << " Theta = "            << std::setw(6) << std::right << a.Theta()
           << " Phi = "              << std::setw(6) << std::right << a.Phi()
           << "\n  StartCosines : ( " << start.X() << " ; " << start.Y() << " ; " << start.Z()
           << ")  EndCosines : ( "   << end.X() << " ; " << end.Y() << " ; " << end.Z()
           << ")"
           << "\n  #Position and Direction = "
           << std::setw(5) << std::right << a.NumberTrajectoryPoints();
    stream << std::endl;

    return stream;
  }

Member Data Documentation

float recob::Track::fChi2 = -1.

protected

Fit chi2.

Definition at line 74 of file bj/lardataobj/RecoBase/Track.h.

SMatrixSym55 recob::Track::fCovEnd

protected

Covariance matrix (local 5D representation) at end point.

Definition at line 77 of file bj/lardataobj/RecoBase/Track.h.

SMatrixSym55 recob::Track::fCovVertex

protected

Covariance matrix (local 5D representation) at start point (vertex)

Definition at line 76 of file bj/lardataobj/RecoBase/Track.h.

int recob::Track::fID = -1

protected

track's ID

Definition at line 78 of file bj/lardataobj/RecoBase/Track.h.

int recob::Track::fNdof = 0.

protected

Number of degrees of freedom of the fit.

Definition at line 75 of file bj/lardataobj/RecoBase/Track.h.

int recob::Track::fPId = 0

protected

Particle ID hypothesis used in the fit (if any)

Definition at line 73 of file bj/lardataobj/RecoBase/Track.h.

TrackTrajectory recob::Track::fTraj

protected

Stored trajectory data member.

Definition at line 72 of file bj/lardataobj/RecoBase/Track.h.

---

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

• bj/lardataobj/RecoBase/Track.h
• bj/lardataobj/RecoBase/Track.cxx