TotemRPLocalTrack Class Reference

A track fit through a single RP. More...

#include <TotemRPLocalTrack.h>

Classes
class	FittedRecHit

Public Member Functions
void	addHit (unsigned int detId, const FittedRecHit &hit)
double	getChiSquared () const
double	getChiSquaredOverNDF () const
TMatrixD	getCovarianceMatrix () const
TVector3	getDirectionVector () const
const edm::DetSetVector< FittedRecHit > &	getHits () const
unsigned short	getNumberOfPointsUsedForFit () const
TVectorD	getParameterVector () const
TVector3	getTrackCentrePoint ()
TVector2	getTrackPoint (double z) const
	returns (x, y) vector More...
double	getTx () const
double	getTxSigma () const
double	getTy () const
double	getTySigma () const
double	getX0 () const
double	getX0Sigma () const
double	getX0Variance () const
double	getY0 () const
double	getY0Sigma () const
double	getY0Variance () const
double	getZ0 () const
bool	isValid () const
void	setChiSquared (double &chiSquared)
void	setCovarianceMatrix (const TMatrixD &par_covariance_matrix)
void	setParameterVector (const TVectorD &track_params_vector)
void	setValid (bool valid)
void	setZ0 (double z0)
	TotemRPLocalTrack ()
	TotemRPLocalTrack (double z0, const TVectorD &track_params_vector, const TMatrixD &par_covariance_matrix, double chiSquared)
TMatrixD	trackPointInterpolationCovariance (double z) const
virtual	~TotemRPLocalTrack ()

Static Public Attributes
static const int	covarianceSize = dimension * dimension
static const int	dimension = 4
	< parameter vector size More...

Private Member Functions
const double &	CovarianceMatrixElement (int i, int j) const
double &	CovarianceMatrixElement (int i, int j)

Private Attributes
double	chiSquared_
	fit chi^2 More...
double	par_covariance_matrix_ [covarianceSize]
edm::DetSetVector< FittedRecHit >	track_hits_vector_
double	track_params_vector_ [dimension]
	track parameters: (x0, y0, tx, ty); x = x0 + tx*(z-z0) ... More...
bool	valid_
	fit valid? More...
double	z0_

Friends
bool	operator< (const TotemRPLocalTrack &l, const TotemRPLocalTrack &r)

Detailed Description

A track fit through a single RP.

x = x0+tx*(z-z0) y = ...

z0 is defined below x any y refer to the global (x, y) system with the beam at (x = 0, y = 0). Only VALID tracks (IsValid()==true) can be later used for physics reconstruction!

Definition at line 31 of file TotemRPLocalTrack.h.

Constructor & Destructor Documentation

TotemRPLocalTrack::TotemRPLocalTrack ( )

inline

Definition at line 68 of file TotemRPLocalTrack.h.

                        : z0_(0), chiSquared_(0), valid_(false)
    {
    }

TotemRPLocalTrack::TotemRPLocalTrack	(	double	z0,
		const TVectorD &	track_params_vector,
		const TMatrixD &	par_covariance_matrix,
		double	chiSquared
	)

Definition at line 35 of file TotemRPLocalTrack.cc.

References CovarianceMatrixElement(), dimension, mps_fire::i, and track_params_vector_.

      : z0_(z0), chiSquared_(chiSquared), valid_(true)
{
  for(int i=0; i<dimension; ++i)
  {
    track_params_vector_[i]=track_params_vector[i];
    for(int j=0; j<dimension; ++j)
    {
      CovarianceMatrixElement(i,j)=par_covariance_matrix(i,j);
    }
  }
}

virtual TotemRPLocalTrack::~TotemRPLocalTrack ( )

inlinevirtual

Definition at line 75 of file TotemRPLocalTrack.h.

{}

Member Function Documentation

void TotemRPLocalTrack::addHit ( unsigned int  detId, const FittedRecHit &  hit  )

inline

Definition at line 78 of file TotemRPLocalTrack.h.

References track_hits_vector_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

    {
      track_hits_vector_.find_or_insert(detId).push_back(hit);
    }

const double& TotemRPLocalTrack::CovarianceMatrixElement ( int  i, int  j  ) const

inlineprivate

Definition at line 143 of file TotemRPLocalTrack.h.

References par_covariance_matrix_.

Referenced by getCovarianceMatrix(), getTxSigma(), getTySigma(), getX0Sigma(), getX0Variance(), getY0Sigma(), getY0Variance(), setCovarianceMatrix(), TotemRPLocalTrack(), and trackPointInterpolationCovariance().

    {
      return par_covariance_matrix_[i * dimension + j];
    }

double& TotemRPLocalTrack::CovarianceMatrixElement ( int  i, int  j  )

inlineprivate

Definition at line 148 of file TotemRPLocalTrack.h.

References par_covariance_matrix_.

    {
      return par_covariance_matrix_[i * dimension + j];
    }

double TotemRPLocalTrack::getChiSquared ( ) const

inline

Definition at line 113 of file TotemRPLocalTrack.h.

References chiSquared_.

{ return chiSquared_; }

double TotemRPLocalTrack::getChiSquaredOverNDF ( ) const

inline

Definition at line 116 of file TotemRPLocalTrack.h.

References chiSquared_, and track_hits_vector_.

{ return chiSquared_ / (track_hits_vector_.size() - 4); }

TMatrixD TotemRPLocalTrack::getCovarianceMatrix

(

)

const

Definition at line 71 of file TotemRPLocalTrack.cc.

References CovarianceMatrixElement(), dimension, mps_fire::i, and funct::m.

Referenced by getDirectionVector().

{
  TMatrixD m(dimension,dimension);
  
  for(int i=0; i<dimension; ++i)
    for(int j=0; j<dimension; ++j)
      m(i,j) = CovarianceMatrixElement(i,j);
      
  return m;
}

TVector3 TotemRPLocalTrack::getDirectionVector ( ) const

inline

Definition at line 100 of file TotemRPLocalTrack.h.

References getCovarianceMatrix(), getParameterVector(), getTx(), getTy(), setCovarianceMatrix(), and setParameterVector().

    {
      TVector3 vect(getTx(), getTy(), 1);
      vect.SetMag(1.0);
      return vect;
    }

const edm::DetSetVector<FittedRecHit>& TotemRPLocalTrack::getHits ( ) const

inline

Definition at line 77 of file TotemRPLocalTrack.h.

References track_hits_vector_.

Referenced by TotemRPLocalTrackFitter::produce().

{ return track_hits_vector_; }

unsigned short TotemRPLocalTrack::getNumberOfPointsUsedForFit ( ) const

inline

Definition at line 118 of file TotemRPLocalTrack.h.

References track_hits_vector_.

{ return track_hits_vector_.size(); }

TVectorD TotemRPLocalTrack::getParameterVector

(

)

const

Definition at line 51 of file TotemRPLocalTrack.cc.

References dimension, mps_fire::i, track_params_vector_, and findQualityFiles::v.

Referenced by getDirectionVector().

{
  TVectorD v(dimension);
  
  for (int i = 0; i < dimension; ++i)
    v[i] = track_params_vector_[i];
      
  return v;
}

TVector3 TotemRPLocalTrack::getTrackCentrePoint ( )

inline

Definition at line 129 of file TotemRPLocalTrack.h.

References track_params_vector_, trackPointInterpolationCovariance(), z, and z0_.

    {
      return TVector3(track_params_vector_[0], track_params_vector_[1], z0_);
    }

TVector2 TotemRPLocalTrack::getTrackPoint ( double  z ) const

inline

returns (x, y) vector

Definition at line 121 of file TotemRPLocalTrack.h.

References track_params_vector_, and z0_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

    {
      double delta_z = z - z0_;
      return TVector2(
        track_params_vector_[0] + track_params_vector_[2] * delta_z,
        track_params_vector_[1] + track_params_vector_[3] * delta_z);
    }

double TotemRPLocalTrack::getTx ( ) const

inline

Definition at line 94 of file TotemRPLocalTrack.h.

References track_params_vector_.

Referenced by getDirectionVector().

{ return track_params_vector_[2]; }

double TotemRPLocalTrack::getTxSigma ( ) const

inline

Definition at line 95 of file TotemRPLocalTrack.h.

References CovarianceMatrixElement(), and mathSSE::sqrt().

{ return sqrt(CovarianceMatrixElement(2, 2)); }

double TotemRPLocalTrack::getTy ( ) const

inline

Definition at line 97 of file TotemRPLocalTrack.h.

References track_params_vector_.

Referenced by getDirectionVector().

{ return track_params_vector_[3]; }

double TotemRPLocalTrack::getTySigma ( ) const

inline

Definition at line 98 of file TotemRPLocalTrack.h.

References CovarianceMatrixElement(), and mathSSE::sqrt().

{ return sqrt(CovarianceMatrixElement(3, 3)); }

double TotemRPLocalTrack::getX0 ( ) const

inline

Definition at line 83 of file TotemRPLocalTrack.h.

References track_params_vector_.

Referenced by ElasticPlotDQMSource::analyze().

{ return track_params_vector_[0]; }

double TotemRPLocalTrack::getX0Sigma ( ) const

inline

Definition at line 84 of file TotemRPLocalTrack.h.

References CovarianceMatrixElement(), and mathSSE::sqrt().

{ return sqrt(CovarianceMatrixElement(0, 0)); }

double TotemRPLocalTrack::getX0Variance ( ) const

inline

Definition at line 85 of file TotemRPLocalTrack.h.

References CovarianceMatrixElement().

{ return CovarianceMatrixElement(0, 0); }

double TotemRPLocalTrack::getY0 ( ) const

inline

Definition at line 87 of file TotemRPLocalTrack.h.

References track_params_vector_.

Referenced by ElasticPlotDQMSource::analyze().

{ return track_params_vector_[1]; }

double TotemRPLocalTrack::getY0Sigma ( ) const

inline

Definition at line 88 of file TotemRPLocalTrack.h.

References CovarianceMatrixElement(), and mathSSE::sqrt().

{ return sqrt(CovarianceMatrixElement(1, 1)); }

double TotemRPLocalTrack::getY0Variance ( ) const

inline

Definition at line 89 of file TotemRPLocalTrack.h.

References CovarianceMatrixElement().

{ return CovarianceMatrixElement(1, 1); }

double TotemRPLocalTrack::getZ0 ( ) const

inline

Definition at line 91 of file TotemRPLocalTrack.h.

References z0_.

{ return z0_; }

bool TotemRPLocalTrack::isValid ( void  ) const

inline

Definition at line 136 of file TotemRPLocalTrack.h.

References valid_.

Referenced by ntupleDataFormat._Object::_checkIsValid(), TotemRPLocalTrackFitter::produce(), and core.AutoHandle.AutoHandle::ReallyLoad().

{ return valid_; }

void TotemRPLocalTrack::setChiSquared ( double &  chiSquared )

inline

Definition at line 114 of file TotemRPLocalTrack.h.

References chiSquared_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

{ chiSquared_ = chiSquared; }

void TotemRPLocalTrack::setCovarianceMatrix

(

const TMatrixD &

par_covariance_matrix

)

Definition at line 84 of file TotemRPLocalTrack.cc.

References CovarianceMatrixElement(), dimension, and mps_fire::i.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack(), and getDirectionVector().

{
  for(int i=0; i<dimension; ++i)
    for(int j=0; j<dimension; ++j)
      CovarianceMatrixElement(i,j) = par_covariance_matrix(i,j);
}

void TotemRPLocalTrack::setParameterVector

(

const TVectorD &

track_params_vector

)

Definition at line 63 of file TotemRPLocalTrack.cc.

References dimension, mps_fire::i, and track_params_vector_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack(), and getDirectionVector().

{
  for (int i = 0; i < dimension; ++i)
    track_params_vector_[i] = track_params_vector[i];
}

void TotemRPLocalTrack::setValid ( bool  valid )

inline

Definition at line 138 of file TotemRPLocalTrack.h.

References checklumidiff::l, operator<, alignCSCRings::r, and valid_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

{ valid_ = valid; }

void TotemRPLocalTrack::setZ0 ( double  z0 )

inline

Definition at line 92 of file TotemRPLocalTrack.h.

References z0_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

{ z0_ = z0; }

TMatrixD TotemRPLocalTrack::trackPointInterpolationCovariance

(

double

z

)

const

Definition at line 14 of file TotemRPLocalTrack.cc.

References CovarianceMatrixElement(), dimension, h, mps_fire::i, JetComb::kMult, and z0_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack(), and getTrackCentrePoint().

{
  TMatrixD h(2,4);
  h(0,0)=1;
  h(1,1)=1;
  h(0,2)=z-z0_;
  h(1,3)=z-z0_;
  
  TMatrixD cov_matr(dimension,dimension);
  for(int i=0; i<dimension; ++i)
    for(int j=0; j<dimension; ++j)
      cov_matr(i,j)=CovarianceMatrixElement(i,j);
  
  TMatrixD V_hT(cov_matr, TMatrixD::kMultTranspose, h);
  //h*=V_hT;
  //return h;
  return TMatrixD(h, TMatrixD::kMult, V_hT);
}

Friends And Related Function Documentation

bool operator< ( const TotemRPLocalTrack &  l, const TotemRPLocalTrack &  r  )

friend

Definition at line 93 of file TotemRPLocalTrack.cc.

Referenced by setValid().

{
  if (l.z0_ < r.z0_)
    return true;
  if (l.z0_ > r.z0_)
    return true;

  for (int i = 0; i < TotemRPLocalTrack::dimension; ++i)
  {
    if (l.track_params_vector_[i] < r.track_params_vector_[i])
      return true;
    if (l.track_params_vector_[i] > r.track_params_vector_[i])
      return true;
  }

  return false;
}

Member Data Documentation

double TotemRPLocalTrack::chiSquared_

private

fit chi^2

Definition at line 165 of file TotemRPLocalTrack.h.

Referenced by getChiSquared(), getChiSquaredOverNDF(), and setChiSquared().

const int TotemRPLocalTrack::covarianceSize = dimension * dimension

static

Definition at line 66 of file TotemRPLocalTrack.h.

const int TotemRPLocalTrack::dimension = 4

static

< parameter vector size

covariance matrix size

Definition at line 63 of file TotemRPLocalTrack.h.

Referenced by getCovarianceMatrix(), getParameterVector(), operator<(), setCovarianceMatrix(), setParameterVector(), TotemRPLocalTrack(), and trackPointInterpolationCovariance().

double TotemRPLocalTrack::par_covariance_matrix_[covarianceSize]

private

Definition at line 162 of file TotemRPLocalTrack.h.

Referenced by CovarianceMatrixElement().

edm::DetSetVector<FittedRecHit> TotemRPLocalTrack::track_hits_vector_

private

Definition at line 153 of file TotemRPLocalTrack.h.

Referenced by addHit(), getChiSquaredOverNDF(), getHits(), and getNumberOfPointsUsedForFit().

double TotemRPLocalTrack::track_params_vector_[dimension]

private

track parameters: (x0, y0, tx, ty); x = x0 + tx*(z-z0) ...

Definition at line 156 of file TotemRPLocalTrack.h.

Referenced by getParameterVector(), getTrackCentrePoint(), getTrackPoint(), getTx(), getTy(), getX0(), getY0(), operator<(), setParameterVector(), and TotemRPLocalTrack().

bool TotemRPLocalTrack::valid_

private

fit valid?

Definition at line 168 of file TotemRPLocalTrack.h.

Referenced by isValid(), and setValid().

double TotemRPLocalTrack::z0_

private

z where x0 and y0 are evaluated. filled from CTPPSGeometry::getRPTranslation

Definition at line 160 of file TotemRPLocalTrack.h.

Referenced by getTrackCentrePoint(), getTrackPoint(), getZ0(), operator<(), setZ0(), and trackPointInterpolationCovariance().