DTRecSegment4D Class Reference

#include <DTRecSegment4D.h>

Inheritance diagram for DTRecSegment4D:

Public Member Functions
virtual DTChamberId	chamberId () const
	The (specific) DetId of the chamber on which the segment resides. More...
double	chi2 () const override
	Chi2 of the segment fit. More...
DTRecSegment4D *	clone () const override
int	degreesOfFreedom () const override
	Degrees of freedom of the segment fit. More...
int	dimension () const override
	Dimension (in parameter space) More...
	DTRecSegment4D ()
	Empty constructor. More...
	DTRecSegment4D (const DTChamberRecSegment2D &phiSeg, const DTSLRecSegment2D &zedSeg, const LocalPoint &posZInCh, const LocalVector &dirZInCh)
	Construct from phi and Z projections. More...
	DTRecSegment4D (const DTChamberRecSegment2D &phiSeg)
	Construct from phi projection. More...
	DTRecSegment4D (const DTSLRecSegment2D &zedSeg, const LocalPoint &posZInCh, const LocalVector &dirZInCh)
	Construct from Z projection. More...
bool	hasPhi () const
	Does it have the Phi projection? More...
bool	hasZed () const
	Does it have the Z projection? More...
LocalVector	localDirection () const override
	Local direction in Chamber frame. More...
LocalError	localDirectionError () const override
	Local direction error in the Chamber frame. More...
LocalPoint	localPosition () const override
	Local position in Chamber frame. More...
LocalError	localPositionError () const override
	Local position error in Chamber frame. More...
AlgebraicVector	parameters () const override
AlgebraicSymMatrix	parametersError () const override
	Covariance matrix fo parameters() More...
const DTChamberRecSegment2D *	phiSegment () const
	The superPhi segment: 0 if no phi projection available. More...
AlgebraicMatrix	projectionMatrix () const override
	The projection matrix relates the trajectory state parameters to the segment parameters(). More...
std::vector< const TrackingRecHit * >	recHits () const override
	Access to component RecHits (if any) More...
std::vector< TrackingRecHit * >	recHits () override
	Non-const access to component RecHits (if any) More...
void	setCovMatrix (const AlgebraicSymMatrix &mat)
	Set covariance matrix. More...
void	setDirection (LocalVector dir)
	Set direction. More...
void	setPosition (LocalPoint pos)
	Set position. More...
const DTSLRecSegment2D *	zSegment () const
	The Z segment: 0 if not zed projection available. More...
	~DTRecSegment4D () override
	Destructor. More...
Public Member Functions inherited from RecSegment
	RecSegment (DetId id)
	RecSegment (TrackingRecHit::id_type id=0)
	~RecSegment () override
	Destructor. More...
Public Member Functions inherited from TrackingRecHit
virtual bool	canImproveWithTrack () const
RecHitPointer	cloneForFit (const GeomDet &idet) const
virtual TrackingRecHit *	cloneHit () const
virtual RecHitPointer	cloneSH () const
const GeomDet *	det () const
virtual const GeomDetUnit *	detUnit () const
virtual float	errorGlobalR () const
virtual float	errorGlobalRPhi () const
virtual float	errorGlobalZ () const
DetId	geographicalId () const
virtual void	getKfComponents (KfComponentsHolder &holder) const
unsigned int	getRTTI () const
Type	getType () const
virtual GlobalPoint	globalPosition () const
virtual GlobalError	globalPositionError () const
virtual bool	hasPositionAndError () const
	to be redefined by daughter class More...
virtual TrackingRecHit const *	hit () const
bool	isValid () const
id_type	rawId () const
virtual void	recHitsV (std::vector< const TrackingRecHit * > &) const
virtual void	recHitsV (std::vector< TrackingRecHit * > &)
virtual void	setDet (const GeomDet &idet)
virtual bool	sharesInput (const TrackingRecHit *other, SharedInputType what) const
virtual const Surface *	surface () const
	TrackingRecHit (DetId id, Type type=valid)
	TrackingRecHit (id_type id=0, Type type=valid)
	TrackingRecHit (DetId id, unsigned int rt, Type type=valid)
	TrackingRecHit (const GeomDet &idet, Type type=valid)
	TrackingRecHit (const GeomDet &idet, unsigned int rt, Type type=valid)
	TrackingRecHit (const GeomDet &idet, TrackingRecHit const &rh)
virtual ConstRecHitContainer	transientHits () const
Type	type () const
virtual float	weight () const
virtual	~TrackingRecHit ()

Private Types
enum	Projection { full, phi, Z, none }
	Which projections are actually there. More...

Private Member Functions
DTChamberRecSegment2D *	phiSegment ()
	the superPhi segment More...
void	setCovMatrixForZed (const LocalPoint &posZInCh)
DTSLRecSegment2D *	zSegment ()
	the Z segment More...

Private Attributes
AlgebraicSymMatrix	theCovMatrix
int	theDimension
LocalVector	theDirection
DTChamberRecSegment2D	thePhiSeg
LocalPoint	thePosition
Projection	theProjection
DTSLRecSegment2D	theZedSeg

Friends
class	DTSegmentUpdator

Additional Inherited Members
Public Types inherited from TrackingRecHit
typedef std::vector < ConstRecHitPointer >	ConstRecHitContainer
using	ConstRecHitPointer = std::shared_ptr< TrackingRecHit const >
typedef unsigned int	id_type
typedef std::vector < ConstRecHitPointer >	RecHitContainer
using	RecHitPointer = std::shared_ptr< TrackingRecHit const >
enum	SharedInputType { all, some }
	definition of equality via shared input More...
enum	Type {   valid = 0, missing = 1, inactive = 2, bad = 3,   missing_inner = 4, missing_outer = 5, inactive_inner = 6, inactive_outer = 7 }
Static Public Attributes inherited from TrackingRecHit
static const int	rttiShift = 24
static const int	typeMask = 0xf
Protected Member Functions inherited from TrackingRecHit
void	setId (id_type iid)
void	setRTTI (unsigned int rt)
void	setType (Type ttype)

Detailed Description

4-parameter RecHits for MuonBarrel DT (x,y, dx/dz, dy/dz)

Author

Stefano Lacaprara - INFN Legnaro stefa.nosp@m.no.l.nosp@m.acapr.nosp@m.ara@.nosp@m.pd.in.nosp@m.fn.i.nosp@m.t

Riccardo Bellan - INFN TO ricca.nosp@m.rdo..nosp@m.bella.nosp@m.n@ce.nosp@m.rn.ch

Definition at line 23 of file DTRecSegment4D.h.

Member Enumeration Documentation

enum DTRecSegment4D::Projection

private

Which projections are actually there.

Enumerator
full
phi
Z
none

Definition at line 115 of file DTRecSegment4D.h.

{ full, phi, Z, none };

Constructor & Destructor Documentation

DTRecSegment4D::DTRecSegment4D ( )

inline

Empty constructor.

Definition at line 27 of file DTRecSegment4D.h.

Referenced by clone().

: theProjection(none), theDimension(0) {}

DTRecSegment4D::DTRecSegment4D	(	const DTChamberRecSegment2D &	phiSeg,
		const DTSLRecSegment2D &	zedSeg,
		const LocalPoint &	posZInCh,
		const LocalVector &	dirZInCh
	)

Construct from phi and Z projections.

Definition at line 15 of file DTRecSegment4D.cc.

References funct::cos(), DTRecSegment2D::covMatrix(), DTChamberId, Exception, TrackingRecHit::geographicalId(), DTRecSegment2D::localDirection(), DTRecSegment2D::localPosition(), DetId::rawId(), setCovMatrixForZed(), theCovMatrix, theDirection, thePosition, PV3DBase< T, PVType, FrameType >::theta(), Vector3DBase< T, FrameTag >::unit(), PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

    : RecSegment(phiSeg.chamberId()), theProjection(full), thePhiSeg(phiSeg), theZedSeg(zedSeg), theDimension(4) {
  // Check consistency of 2 sub-segments
  if (DTChamberId(phiSeg.geographicalId().rawId()) != DTChamberId(zedSeg.geographicalId().rawId()))
    throw cms::Exception("DTRecSegment4D")
        << "the z Segment and the phi segment have different chamber id" << std::endl;

  // The position of 2D segments are defined in the SL frame: I must first
  // extrapolate that position at the Chamber reference plane
  LocalPoint posZAt0 = posZInCh + dirZInCh * (-posZInCh.z()) / cos(dirZInCh.theta());

  thePosition = LocalPoint(phiSeg.localPosition().x(), posZAt0.y(), 0.);
  LocalVector dirPhiInCh = phiSeg.localDirection();

  // given the actual definition of chamber refFrame, (with z poiniting to IP),
  // the zed component of direction is negative.
  theDirection = LocalVector(dirPhiInCh.x() / fabs(dirPhiInCh.z()), dirZInCh.y() / fabs(dirZInCh.z()), -1.);
  theDirection = theDirection.unit();

  // set cov matrix
  theCovMatrix = AlgebraicSymMatrix(4);
  theCovMatrix[0][0] = phiSeg.covMatrix()[0][0];  //sigma (dx/dz)
  theCovMatrix[0][2] = phiSeg.covMatrix()[0][1];  //cov(dx/dz,x)
  theCovMatrix[2][2] = phiSeg.covMatrix()[1][1];  //sigma (x)
  setCovMatrixForZed(posZInCh);
}

DTRecSegment4D::DTRecSegment4D

(

const DTChamberRecSegment2D &

phiSeg

)

Construct from phi projection.

Definition at line 45 of file DTRecSegment4D.cc.

References DTRecSegment2D::covMatrix(), DTRecSegment2D::localDirection(), DTRecSegment2D::localPosition(), theCovMatrix, theDirection, thePhiSeg, and thePosition.

    : RecSegment(phiSeg.chamberId()),
      theProjection(phi),
      thePhiSeg(phiSeg),
      theZedSeg(DTSLRecSegment2D()),
      theDimension(2) {
  thePosition = thePhiSeg.localPosition();

  theDirection = thePhiSeg.localDirection();

  // set cov matrix
  theCovMatrix = AlgebraicSymMatrix(4);
  theCovMatrix[0][0] = phiSeg.covMatrix()[0][0];  //sigma (dx/dz)
  theCovMatrix[0][2] = phiSeg.covMatrix()[0][1];  //cov(dx/dz,x)
  theCovMatrix[2][2] = phiSeg.covMatrix()[1][1];  //sigma (x)
}

DTRecSegment4D::DTRecSegment4D	(	const DTSLRecSegment2D &	zedSeg,
		const LocalPoint &	posZInCh,
		const LocalVector &	dirZInCh
	)

Construct from Z projection.

Definition at line 62 of file DTRecSegment4D.cc.

References funct::cos(), setCovMatrixForZed(), theCovMatrix, theDirection, thePosition, PV3DBase< T, PVType, FrameType >::theta(), and PV3DBase< T, PVType, FrameType >::z().

    : RecSegment(zedSeg.superLayerId().chamberId()),
      theProjection(Z),
      thePhiSeg(DTChamberRecSegment2D()),
      theZedSeg(zedSeg),
      theDimension(2) {
  LocalPoint posZAt0 = posZInCh + dirZInCh * (-posZInCh.z() / cos(dirZInCh.theta()));

  thePosition = posZAt0;
  theDirection = dirZInCh;

  // set cov matrix
  theCovMatrix = AlgebraicSymMatrix(4);
  setCovMatrixForZed(posZInCh);
}

DTRecSegment4D::~DTRecSegment4D ( )

override

Destructor.

Definition at line 78 of file DTRecSegment4D.cc.

{}

Member Function Documentation

DTChamberId DTRecSegment4D::chamberId ( ) const

virtual

The (specific) DetId of the chamber on which the segment resides.

Definition at line 256 of file DTRecSegment4D.cc.

References DTChamberId, and TrackingRecHit::geographicalId().

Referenced by FWDTSegmentProxyBuilder::buildViewType(), DynamicTruncation::chooseLayers(), DTTrigGeomUtils::computeSCCoordinates(), DynamicTruncation::fillDYTInfos(), DTSegmentUpdator::fit(), DTChamberEfficiencyTask::interpolate(), DTChamberEfficiencyTask::isGoodSegment(), and DynamicTruncation::preliminaryFit().

{ return DTChamberId(geographicalId()); }

double DTRecSegment4D::chi2 ( ) const

overridevirtual

Chi2 of the segment fit.

Implements RecSegment.

Definition at line 170 of file DTRecSegment4D.cc.

References DTRecSegment2D::chi2(), hasPhi(), hasZed(), mps_fire::result, thePhiSeg, and theZedSeg.

Referenced by DTChamberEfficiencyTask::getBestSegment(), DTChamberEfficiencyTask::isGoodSegment(), DTSegmentSelector::operator()(), and operator<<().

                                  {
  double result = 0;
  if (hasPhi())
    result += thePhiSeg.chi2();
  if (hasZed())
    result += theZedSeg.chi2();
  return result;
}

DTRecSegment4D* DTRecSegment4D::clone ( void  ) const

inlineoverridevirtual

Implements TrackingRecHit.

Definition at line 46 of file DTRecSegment4D.h.

References DTRecSegment4D().

Referenced by DTSegment4DT0Corrector::produce().

{ return new DTRecSegment4D(*this); }

int DTRecSegment4D::degreesOfFreedom ( ) const

overridevirtual

Degrees of freedom of the segment fit.

Implements RecSegment.

Definition at line 179 of file DTRecSegment4D.cc.

References DTRecSegment2D::degreesOfFreedom(), hasPhi(), hasZed(), mps_fire::result, thePhiSeg, and theZedSeg.

Referenced by DTChamberEfficiencyTask::getBestSegment(), DTChamberEfficiencyTask::isGoodSegment(), DTSegmentSelector::operator()(), and operator<<().

                                           {
  int result = 0;
  if (hasPhi())
    result += thePhiSeg.degreesOfFreedom();
  if (hasZed())
    result += theZedSeg.degreesOfFreedom();
  return result;
}

int DTRecSegment4D::dimension ( ) const

inlineoverridevirtual

Dimension (in parameter space)

Implements RecSegment.

Definition at line 79 of file DTRecSegment4D.h.

References theDimension.

Referenced by DTCalibValidationFromMuons::compute(), DTCalibValidation::compute(), operator<<(), parameters(), parametersError(), and projectionMatrix().

{ return theDimension; }

bool DTRecSegment4D::hasPhi ( ) const

inline

Does it have the Phi projection?

Definition at line 90 of file DTRecSegment4D.h.

References full, phi, and theProjection.

Referenced by TrackDetectorAssociator::addTAMuonSegmentMatch(), DTChamberEfficiencyTask::analyze(), DTSegmentUpdator::calculateT0corr(), chi2(), degreesOfFreedom(), DTSegmentUpdator::fit(), DTChamberEfficiencyTask::getBestSegment(), MuonAssociatorByHitsHelper::getMatchedIds(), TrackerMuonHitExtractor::getMuonHits(), DTChamberEfficiencyTask::interpolate(), DTChamberEfficiencyTask::isGoodSegment(), MuonResidualsFromTrack::MuonResidualsFromTrack(), DTSegmentSelector::operator()(), operator<<(), phiSegment(), MuonTrackProducer::produce(), recHits(), MuonTrackDT13ChamberResidual::setSegmentResidual(), StateSegmentMatcher::StateSegmentMatcher(), CosmicMuonTrajectoryBuilder::t0(), and DTSegmentUpdator::update().

{ return (theProjection == full || theProjection == phi); }

bool DTRecSegment4D::hasZed ( ) const

inline

Does it have the Z projection?

Definition at line 93 of file DTRecSegment4D.h.

References full, theProjection, and Z.

Referenced by TrackDetectorAssociator::addTAMuonSegmentMatch(), DTChamberEfficiencyTask::analyze(), DTSegmentUpdator::calculateT0corr(), chi2(), degreesOfFreedom(), DTSegmentUpdator::fit(), DTChamberEfficiencyTask::getBestSegment(), MuonAssociatorByHitsHelper::getMatchedIds(), TrackerMuonHitExtractor::getMuonHits(), DTChamberEfficiencyTask::interpolate(), DTChamberEfficiencyTask::isGoodSegment(), MuonResidualsFromTrack::MuonResidualsFromTrack(), DTSegmentSelector::operator()(), operator<<(), MuonTrackProducer::produce(), recHits(), MuonTrackDT2ChamberResidual::setSegmentResidual(), StateSegmentMatcher::StateSegmentMatcher(), DTSegmentUpdator::update(), and zSegment().

{ return (theProjection == full || theProjection == Z); }

LocalVector DTRecSegment4D::localDirection ( ) const

inlineoverridevirtual

Local direction in Chamber frame.

Implements RecSegment.

Definition at line 67 of file DTRecSegment4D.h.

References theDirection.

Referenced by FWDTSegmentProxyBuilder::buildViewType(), DTRecHitSegmentResidual::compute(), DTCalibValidationFromMuons::compute(), DTCalibValidation::compute(), DTTrigGeomUtils::computeSCCoordinates(), DTSegment4DQuality::dqmAnalyze(), DTSegmentSelector::operator()(), operator<<(), DTCombinatorialPatternReco4D::segmentSpecialZed(), DTResidualCalibration::segmentToWireDistance(), and DTSegmentUpdator::update().

{ return theDirection; }

LocalError DTRecSegment4D::localDirectionError ( ) const

overridevirtual

Local direction error in the Chamber frame.

Implements RecSegment.

Definition at line 166 of file DTRecSegment4D.cc.

References theCovMatrix.

Referenced by DTSegment4DQuality::dqmAnalyze().

                                                     {
  return LocalError(theCovMatrix[0][0], theCovMatrix[0][1], theCovMatrix[1][1]);
}

LocalPoint DTRecSegment4D::localPosition ( ) const

inlineoverridevirtual

Local position in Chamber frame.

Implements TrackingRecHit.

Definition at line 61 of file DTRecSegment4D.h.

References thePosition.

Referenced by DTChamberEfficiencyTask::analyze(), FWDTSegmentProxyBuilder::buildViewType(), DTRecHitSegmentResidual::compute(), DTCalibValidationFromMuons::compute(), DTCalibValidation::compute(), DTTrigGeomUtils::computeSCCoordinates(), DTSegment4DQuality::dqmAnalyze(), DTChamberEfficiencyTask::interpolate(), DTSegmentSelector::operator()(), operator<<(), DTCombinatorialPatternReco4D::segmentSpecialZed(), DTResidualCalibration::segmentToWireDistance(), and DTSegmentUpdator::update().

{ return thePosition; }

LocalError DTRecSegment4D::localPositionError ( ) const

overridevirtual

Local position error in Chamber frame.

Implements TrackingRecHit.

Definition at line 162 of file DTRecSegment4D.cc.

References theCovMatrix.

Referenced by DTSegment4DQuality::dqmAnalyze().

                                                    {
  return LocalError(theCovMatrix[2][2], theCovMatrix[2][3], theCovMatrix[3][3]);
}

AlgebraicVector DTRecSegment4D::parameters ( void  ) const

overridevirtual

Parameters of the segment, for the track fit. For a 4D segment: (dx/dy,dy/dz,x,y) For a 2D, phi-only segment: (dx/dz,x) For a 2D, Z-only segment: (dy/dz,y)

Implements TrackingRecHit.

Definition at line 80 of file DTRecSegment4D.cc.

References dimension(), phi, mps_fire::result, theDirection, thePosition, theProjection, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), PV3DBase< T, PVType, FrameType >::z(), and Z.

Referenced by StateSegmentMatcher::StateSegmentMatcher().

                                                 {
  if (dimension() == 4) {
    // (dx/dz,dy/dz,x,y)
    AlgebraicVector result(4);
    result[2] = thePosition.x();
    result[3] = thePosition.y();
    result[0] = theDirection.x() / theDirection.z();
    result[1] = theDirection.y() / theDirection.z();
    return result;
  }

  AlgebraicVector result(2);
  if (theProjection == phi) {
    // (dx/dz,x)
    result[1] = thePosition.x();
    result[0] = theDirection.x() / theDirection.z();
  } else if (theProjection == Z) {
    // (dy/dz,y) (note we are in the chamber r.f.)
    result[1] = thePosition.y();
    result[0] = theDirection.y() / theDirection.z();
  }
  return result;
}

AlgebraicSymMatrix DTRecSegment4D::parametersError ( ) const

overridevirtual

Covariance matrix fo parameters()

Implements TrackingRecHit.

Definition at line 104 of file DTRecSegment4D.cc.

References dimension(), phi, mps_fire::result, theCovMatrix, theProjection, and Z.

Referenced by StateSegmentMatcher::StateSegmentMatcher().

                                                         {
  if (dimension() == 4) {
    return theCovMatrix;
  }

  AlgebraicSymMatrix result(2);
  if (theProjection == phi) {
    result[0][0] = theCovMatrix[0][0];  //S(dx/dz)
    result[0][1] = theCovMatrix[0][2];  //Cov(dx/dz,x)
    result[1][1] = theCovMatrix[2][2];  //S(x)
  } else if (theProjection == Z) {
    result[0][0] = theCovMatrix[1][1];  //S(dy/dz)
    result[0][1] = theCovMatrix[1][3];  //Cov(dy/dz,y)
    result[1][1] = theCovMatrix[3][3];  //S(y)
  }
  return result;
}

const DTChamberRecSegment2D* DTRecSegment4D::phiSegment ( ) const

inline

The superPhi segment: 0 if no phi projection available.

Definition at line 96 of file DTRecSegment4D.h.

References hasPhi(), and thePhiSeg.

Referenced by TrackDetectorAssociator::addTAMuonSegmentMatch(), SegmentTrackAnalyzer::analyze(), DTLocalTriggerSynchTask::analyze(), FWDTSegmentProxyBuilder::buildViewType(), DTSegmentUpdator::calculateT0corr(), DTCalibValidationFromMuons::compute(), DTCalibValidation::compute(), DTSegment4DQuality::dqmAnalyze(), DTSegmentUpdator::fit(), DTChamberEfficiencyTask::getBestSegment(), MuonAssociatorByHitsHelper::getMatchedIds(), TrackerMuonHitExtractor::getMuonHits(), DTChamberEfficiencyTask::isGoodSegment(), DTSegmentSelector::operator()(), operator<<(), MuonTrackProducer::produce(), recHits(), DTCombinatorialPatternReco4D::segmentSpecialZed(), MuonTrackDT13ChamberResidual::setSegmentResidual(), CosmicMuonTrajectoryBuilder::t0(), and DTSegmentUpdator::update().

{ return hasPhi() ? &thePhiSeg : nullptr; }

DTChamberRecSegment2D* DTRecSegment4D::phiSegment ( )

inlineprivate

the superPhi segment

Definition at line 119 of file DTRecSegment4D.h.

References thePhiSeg.

{ return &thePhiSeg; }

AlgebraicMatrix DTRecSegment4D::projectionMatrix ( ) const

overridevirtual

The projection matrix relates the trajectory state parameters to the segment parameters().

Implements TrackingRecHit.

Definition at line 150 of file DTRecSegment4D.cc.

References dimension(), phi, the2DPhiProjMatrix, the2DZProjMatrix, the4DProjectionMatrix, theProjection, and Z.

                                                       {
  if (dimension() == 4) {
    return the4DProjectionMatrix;
  } else if (theProjection == phi) {
    return the2DPhiProjMatrix;
  } else if (theProjection == Z) {
    return the2DZProjMatrix;
  } else {
    return AlgebraicMatrix();
  }
}

std::vector< const TrackingRecHit * > DTRecSegment4D::recHits ( ) const

overridevirtual

Access to component RecHits (if any)

Implements TrackingRecHit.

Definition at line 233 of file DTRecSegment4D.cc.

References hasPhi(), hasZed(), phiSegment(), and zSegment().

Referenced by DynamicTruncation::updateWithDThits().

                                                               {
  std::vector<const TrackingRecHit*> pointersOfRecHits;

  if (hasPhi())
    pointersOfRecHits.push_back(phiSegment());
  if (hasZed())
    pointersOfRecHits.push_back(zSegment());

  return pointersOfRecHits;
}

std::vector< TrackingRecHit * > DTRecSegment4D::recHits ( )

overridevirtual

Non-const access to component RecHits (if any)

Implements TrackingRecHit.

Definition at line 245 of file DTRecSegment4D.cc.

References hasPhi(), hasZed(), phiSegment(), and zSegment().

                                                   {
  std::vector<TrackingRecHit*> pointersOfRecHits;

  if (hasPhi())
    pointersOfRecHits.push_back(phiSegment());
  if (hasZed())
    pointersOfRecHits.push_back(zSegment());

  return pointersOfRecHits;
}

void DTRecSegment4D::setCovMatrix ( const AlgebraicSymMatrix &  mat )

inline

Set covariance matrix.

Definition at line 108 of file DTRecSegment4D.h.

References theCovMatrix.

Referenced by DTSegmentUpdator::fit().

{ theCovMatrix = mat; }

void DTRecSegment4D::setCovMatrixForZed ( const LocalPoint &  posZInCh )

private

Definition at line 188 of file DTRecSegment4D.cc.

References DTRecSegment2D::parametersError(), theCovMatrix, theZedSeg, and PV3DBase< T, PVType, FrameType >::z().

Referenced by DTRecSegment4D(), and DTSegmentUpdator::fit().

                                                                  {
  // Warning!!! the covariance matrix for Theta SL segment is defined in the SL
  // reference frame, here that in the Chamber ref frame must be used.
  // For direction, no problem, but the position is extrapolated, so we must
  // propagate the error properly.

  // many thanks to Paolo Ronchese for the help in deriving the formulas!

  // y=m*z+q in SL frame
  // y=m'*z+q' in CH frame

  // var(m') = var(m)
  theCovMatrix[1][1] = theZedSeg.parametersError()[0][0];  //sigma (dy/dz)

  // cov(m',q') = DeltaZ*Var(m) + Cov(m,q)
  theCovMatrix[1][3] =
      posZInCh.z() * theZedSeg.parametersError()[0][0] + theZedSeg.parametersError()[0][1];  //cov(dy/dz,y)

  // Var(q') = DeltaZ^2*Var(m) + Var(q) + 2*DeltaZ*Cov(m,q)
  // cout << "Var(q') = DeltaZ^2*Var(m) + Var(q) + 2*DeltaZ*Cov(m,q)" << endl;
  // cout << "Var(q')= " << posZInCh.z()*posZInCh.z() << "*" <<
  //   theZedSeg.parametersError()[0][0] << " + " <<
  //   theZedSeg.parametersError()[1][1] << " + " <<
  //   2*posZInCh.z() << "*" << theZedSeg.parametersError()[0][1] ;
  theCovMatrix[3][3] = 2. * (posZInCh.z() * posZInCh.z()) * theZedSeg.parametersError()[0][0] +
                       theZedSeg.parametersError()[1][1] + 2. * posZInCh.z() * theZedSeg.parametersError()[0][1];
  // cout << " = " << theCovMatrix[3][3] << endl;
}

void DTRecSegment4D::setDirection ( LocalVector  dir )

inline

Set direction.

Definition at line 105 of file DTRecSegment4D.h.

References DeadROC_duringRun::dir, and theDirection.

Referenced by DTSegmentUpdator::fit().

{ theDirection = dir; }

void DTRecSegment4D::setPosition ( LocalPoint  pos )

inline

Set position.

Definition at line 102 of file DTRecSegment4D.h.

References thePosition.

Referenced by DTSegmentUpdator::fit().

{ thePosition = pos; }

const DTSLRecSegment2D* DTRecSegment4D::zSegment ( ) const

inline

The Z segment: 0 if not zed projection available.

Definition at line 99 of file DTRecSegment4D.h.

References hasZed(), and theZedSeg.

Referenced by FWDTSegmentProxyBuilder::buildViewType(), DTSegmentUpdator::calculateT0corr(), DTCalibValidationFromMuons::compute(), DTCalibValidation::compute(), DTSegment4DQuality::dqmAnalyze(), DTSegmentUpdator::fit(), DTChamberEfficiencyTask::getBestSegment(), MuonAssociatorByHitsHelper::getMatchedIds(), DTChamberEfficiencyTask::isGoodSegment(), DTSegmentSelector::operator()(), operator<<(), recHits(), DTCombinatorialPatternReco4D::segmentSpecialZed(), and DTSegmentUpdator::update().

{ return hasZed() ? &theZedSeg : nullptr; }

DTSLRecSegment2D* DTRecSegment4D::zSegment ( )

inlineprivate

the Z segment

Definition at line 122 of file DTRecSegment4D.h.

References theZedSeg.

{ return &theZedSeg; }

Friends And Related Function Documentation

friend class DTSegmentUpdator

friend

Definition at line 25 of file DTRecSegment4D.h.

Member Data Documentation

AlgebraicSymMatrix DTRecSegment4D::theCovMatrix

private

Definition at line 136 of file DTRecSegment4D.h.

Referenced by DTRecSegment4D(), localDirectionError(), localPositionError(), parametersError(), setCovMatrix(), and setCovMatrixForZed().

int DTRecSegment4D::theDimension

private

Definition at line 141 of file DTRecSegment4D.h.

Referenced by dimension().

LocalVector DTRecSegment4D::theDirection

private

Definition at line 125 of file DTRecSegment4D.h.

Referenced by DTRecSegment4D(), localDirection(), parameters(), and setDirection().

DTChamberRecSegment2D DTRecSegment4D::thePhiSeg

private

Definition at line 138 of file DTRecSegment4D.h.

Referenced by chi2(), degreesOfFreedom(), DTRecSegment4D(), and phiSegment().

LocalPoint DTRecSegment4D::thePosition

private

Definition at line 124 of file DTRecSegment4D.h.

Referenced by DTRecSegment4D(), localPosition(), parameters(), and setPosition().

Projection DTRecSegment4D::theProjection

private

Definition at line 116 of file DTRecSegment4D.h.

Referenced by hasPhi(), hasZed(), parameters(), parametersError(), and projectionMatrix().

DTSLRecSegment2D DTRecSegment4D::theZedSeg

private

Definition at line 139 of file DTRecSegment4D.h.

Referenced by chi2(), degreesOfFreedom(), setCovMatrixForZed(), and zSegment().