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	chiSquared () const
double	chiSquaredOverNDF () const
TMatrixD	covarianceMatrix () const
TVector3	directionVector () const
const edm::DetSetVector < FittedRecHit > &	hits () const
bool	isValid () const
unsigned short	numberOfPointsUsedForFit () const
TVectorD	parameterVector () 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)
TVector3	trackCentrePoint ()
TVector2	trackPoint (double z) const
	returns (x, y) vector More...
TMatrixD	trackPointInterpolationCovariance (double z) const
double	tx () const
double	txSigma () const
double	ty () const
double	tySigma () const
double	x0 () const
double	x0Sigma () const
double	x0Variance () const
double	y0 () const
double	y0Sigma () const
double	y0Variance () const
double	z0 () 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 66 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 34 of file TotemRPLocalTrack.cc.

References CovarianceMatrixElement(), dimension, mps_fire::i, dqmiolumiharvest::j, 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 73 of file TotemRPLocalTrack.h.

{}

Member Function Documentation

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

inline

Definition at line 76 of file TotemRPLocalTrack.h.

References track_hits_vector_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

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

double TotemRPLocalTrack::chiSquared ( ) const

inline

Definition at line 109 of file TotemRPLocalTrack.h.

References chiSquared_.

Referenced by setChiSquared().

{ return chiSquared_; }

double TotemRPLocalTrack::chiSquaredOverNDF ( ) const

inline

Definition at line 112 of file TotemRPLocalTrack.h.

References chiSquared_, and track_hits_vector_.

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

TMatrixD TotemRPLocalTrack::covarianceMatrix

(

)

const

Definition at line 67 of file TotemRPLocalTrack.cc.

References CovarianceMatrixElement(), dimension, mps_fire::i, dqmiolumiharvest::j, and visualization-live-secondInstance_cfg::m.

                                                   {
  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;
}

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

inlineprivate

Definition at line 134 of file TotemRPLocalTrack.h.

References dimension, dqmiolumiharvest::j, and par_covariance_matrix_.

Referenced by covarianceMatrix(), setCovarianceMatrix(), TotemRPLocalTrack(), trackPointInterpolationCovariance(), txSigma(), tySigma(), x0Sigma(), x0Variance(), y0Sigma(), and y0Variance().

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

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

inlineprivate

Definition at line 136 of file TotemRPLocalTrack.h.

References dimension, dqmiolumiharvest::j, and par_covariance_matrix_.

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

TVector3 TotemRPLocalTrack::directionVector ( ) const

inline

Definition at line 97 of file TotemRPLocalTrack.h.

References tx(), and ty().

                                          {
    TVector3 vect(tx(), ty(), 1);
    vect.SetMag(1.0);
    return vect;
  }

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

inline

Definition at line 75 of file TotemRPLocalTrack.h.

References track_hits_vector_.

Referenced by TotemRPLocalTrackFitter::produce().

{ return track_hits_vector_; }

bool TotemRPLocalTrack::isValid ( void  ) const

inline

Definition at line 127 of file TotemRPLocalTrack.h.

References valid_.

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

{ return valid_; }

unsigned short TotemRPLocalTrack::numberOfPointsUsedForFit ( ) const

inline

Definition at line 114 of file TotemRPLocalTrack.h.

References track_hits_vector_.

{ return track_hits_vector_.size(); }

TVectorD TotemRPLocalTrack::parameterVector

(

)

const

Definition at line 49 of file TotemRPLocalTrack.cc.

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

                                                  {
  TVectorD v(dimension);

  for (int i = 0; i < dimension; ++i)
    v[i] = track_params_vector_[i];

  return v;
}

void TotemRPLocalTrack::setChiSquared ( double &  chiSquared )

inline

Definition at line 110 of file TotemRPLocalTrack.h.

References chiSquared(), and chiSquared_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

{ chiSquared_ = chiSquared; }

void TotemRPLocalTrack::setCovarianceMatrix

(

const TMatrixD &

par_covariance_matrix

)

Definition at line 79 of file TotemRPLocalTrack.cc.

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

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

                                                                                 {
  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 60 of file TotemRPLocalTrack.cc.

References dimension, mps_fire::i, and track_params_vector_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

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

void TotemRPLocalTrack::setValid ( bool  valid )

inline

Definition at line 129 of file TotemRPLocalTrack.h.

References valid_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

{ valid_ = valid; }

void TotemRPLocalTrack::setZ0 ( double  z0 )

inline

Definition at line 89 of file TotemRPLocalTrack.h.

References z0(), and z0_.

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

{ z0_ = z0; }

TVector3 TotemRPLocalTrack::trackCentrePoint ( )

inline

Definition at line 123 of file TotemRPLocalTrack.h.

References track_params_vector_, and z0_.

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

TVector2 TotemRPLocalTrack::trackPoint ( double  z ) const

inline

returns (x, y) vector

Definition at line 117 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);
  }

TMatrixD TotemRPLocalTrack::trackPointInterpolationCovariance

(

double

z

)

const

Definition at line 14 of file TotemRPLocalTrack.cc.

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

Referenced by TotemRPLocalTrackFitterAlgorithm::fitTrack().

                                                                            {
  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);
}

double TotemRPLocalTrack::tx ( ) const

inline

Definition at line 91 of file TotemRPLocalTrack.h.

References track_params_vector_.

Referenced by directionVector().

{ return track_params_vector_[2]; }

double TotemRPLocalTrack::txSigma ( ) const

inline

Definition at line 92 of file TotemRPLocalTrack.h.

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

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

double TotemRPLocalTrack::ty ( ) const

inline

Definition at line 94 of file TotemRPLocalTrack.h.

References track_params_vector_.

Referenced by directionVector().

{ return track_params_vector_[3]; }

double TotemRPLocalTrack::tySigma ( ) const

inline

Definition at line 95 of file TotemRPLocalTrack.h.

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

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

double TotemRPLocalTrack::x0 ( ) const

inline

Definition at line 80 of file TotemRPLocalTrack.h.

References track_params_vector_.

Referenced by ElasticPlotDQMSource::analyze().

{ return track_params_vector_[0]; }

double TotemRPLocalTrack::x0Sigma ( ) const

inline

Definition at line 81 of file TotemRPLocalTrack.h.

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

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

double TotemRPLocalTrack::x0Variance ( ) const

inline

Definition at line 82 of file TotemRPLocalTrack.h.

References CovarianceMatrixElement().

{ return CovarianceMatrixElement(0, 0); }

double TotemRPLocalTrack::y0 ( ) const

inline

Definition at line 84 of file TotemRPLocalTrack.h.

References track_params_vector_.

Referenced by ElasticPlotDQMSource::analyze().

{ return track_params_vector_[1]; }

double TotemRPLocalTrack::y0Sigma ( ) const

inline

Definition at line 85 of file TotemRPLocalTrack.h.

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

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

double TotemRPLocalTrack::y0Variance ( ) const

inline

Definition at line 86 of file TotemRPLocalTrack.h.

References CovarianceMatrixElement().

{ return CovarianceMatrixElement(1, 1); }

double TotemRPLocalTrack::z0 ( ) const

inline

Definition at line 88 of file TotemRPLocalTrack.h.

References z0_.

Referenced by setZ0().

{ return z0_; }

Friends And Related Function Documentation

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

friend

Definition at line 87 of file TotemRPLocalTrack.cc.

                                                                       {
  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 150 of file TotemRPLocalTrack.h.

Referenced by chiSquared(), chiSquaredOverNDF(), and setChiSquared().

const int TotemRPLocalTrack::covarianceSize = dimension * dimension

static

Definition at line 64 of file TotemRPLocalTrack.h.

const int TotemRPLocalTrack::dimension = 4

static

< parameter vector size

covariance matrix size

Definition at line 61 of file TotemRPLocalTrack.h.

Referenced by covarianceMatrix(), CovarianceMatrixElement(), operator<(), parameterVector(), setCovarianceMatrix(), setParameterVector(), TotemRPLocalTrack(), and trackPointInterpolationCovariance().

double TotemRPLocalTrack::par_covariance_matrix_[covarianceSize]

private

Definition at line 147 of file TotemRPLocalTrack.h.

Referenced by CovarianceMatrixElement().

edm::DetSetVector<FittedRecHit> TotemRPLocalTrack::track_hits_vector_

private

Definition at line 138 of file TotemRPLocalTrack.h.

Referenced by addHit(), chiSquaredOverNDF(), hits(), and numberOfPointsUsedForFit().

double TotemRPLocalTrack::track_params_vector_[dimension]

private

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

Definition at line 141 of file TotemRPLocalTrack.h.

Referenced by operator<(), parameterVector(), setParameterVector(), TotemRPLocalTrack(), trackCentrePoint(), trackPoint(), tx(), ty(), x0(), and y0().

bool TotemRPLocalTrack::valid_

private

fit valid?

Definition at line 153 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 145 of file TotemRPLocalTrack.h.

Referenced by operator<(), setZ0(), trackCentrePoint(), trackPoint(), trackPointInterpolationCovariance(), and z0().