genfit::WirePointMeasurement Class Reference

Class for measurements in wire detectors (Straw tubes and drift chambers) which can measure the coordinate along the wire. More...

#include <WirePointMeasurement.h>

Inheritance diagram for genfit::WirePointMeasurement:

Public Member Functions
	WirePointMeasurement (int nDim=8)
	WirePointMeasurement (const TVectorD &rawHitCoords, const TMatrixDSym &rawHitCov, int detId, int hitId, TrackPoint *trackPoint)
virtual	~WirePointMeasurement ()
virtual AbsMeasurement *	clone () const
	Deep copy ctor for polymorphic class. More...
virtual SharedPlanePtr	constructPlane (const StateOnPlane &state) const
virtual std::vector < MeasurementOnPlane * >	constructMeasurementsOnPlane (const StateOnPlane &state) const
virtual const AbsHMatrix *	constructHMatrix (const AbsTrackRep *) const
void	setMaxDistance (double d)
void	setLeftRightResolution (int lr)
virtual bool	isLeftRightMeasurement () const
	If the AbsMeasurement is a wire hit, the left/right resolution will be used. More...
virtual int	getLeftRightResolution () const
double	getMaxDistance ()
TrackPoint *	getTrackPoint () const
void	setTrackPoint (TrackPoint *tp)
const TVectorD &	getRawHitCoords () const
TVectorD &	getRawHitCoords ()
const TMatrixDSym &	getRawHitCov () const
TMatrixDSym &	getRawHitCov ()
int	getDetId () const
int	getHitId () const
unsigned int	getDim () const
void	setRawHitCoords (const TVectorD &coords)
void	setRawHitCov (const TMatrixDSym &cov)
void	setDetId (int detId)
void	setHitId (int hitId)
virtual void	Print (const Option_t *="") const

Protected Attributes
double	maxDistance_
signed char	leftRight_
TVectorD	rawHitCoords_
TMatrixDSym	rawHitCov_
int	detId_
int	hitId_
TrackPoint *	trackPoint_
	Pointer to TrackPoint where the measurement belongs to. More...

Detailed Description

Class for measurements in wire detectors (Straw tubes and drift chambers) which can measure the coordinate along the wire.

Author

Christian Höppner (Technische Universität München, original author)

Lia Lavezzi (INFN Pavia, original author)

Sebastian Neubert (Technische Universität München, original author)

Johannes Rauch (Technische Universität München, original author)

This is not valid for any kind of plane orientation choice: to use it you MUST choose a plane described by u and v axes with v coincident with the wire (and u orthogonal to it, obviously). The hit will be described by 8 coordinates: w_x1, w_y1, w_z1, w_x2, w_y2, w_z2, rdrift, zreco where w_ji (with j = x, y, z and i = 1, 2) are the wire extremities coordinates; rdrift = distance from the wire (u coordinate in the plane) and zreco = coordinate along the wire (w2 -w1) (in the plane reference frame, v coordinate).

Definition at line 51 of file WirePointMeasurement.h.

Constructor & Destructor Documentation

genfit::WirePointMeasurement::WirePointMeasurement

(

int

nDim = 8

)

Referenced by clone().

genfit::WirePointMeasurement::WirePointMeasurement	(	const TVectorD &	rawHitCoords,
		const TMatrixDSym &	rawHitCov,
		int	detId,
		int	hitId,
		TrackPoint *	trackPoint
	)

virtual genfit::WirePointMeasurement::~WirePointMeasurement ( )

inlinevirtual

Definition at line 57 of file WirePointMeasurement.h.

{;}

Member Function Documentation

virtual AbsMeasurement* genfit::WirePointMeasurement::clone ( ) const

inlinevirtual

Deep copy ctor for polymorphic class.

Reimplemented from genfit::WireMeasurement.

Definition at line 59 of file WirePointMeasurement.h.

References WirePointMeasurement().

{return new WirePointMeasurement(*this);}

virtual const AbsHMatrix* genfit::WirePointMeasurement::constructHMatrix ( const AbsTrackRep *  ) const

virtual

Returns a new AbsHMatrix object. Caller must take ownership.

Reimplemented from genfit::WireMeasurement.

virtual std::vector<MeasurementOnPlane*> genfit::WirePointMeasurement::constructMeasurementsOnPlane ( const StateOnPlane &  state ) const

virtual

Hits with a small drift distance get a higher weight, whereas hits with big drift distances become weighted down. When these initial weights are used by the DAF, the smoothed track will be closer to the real trajectory than if both sides are weighted with 0.5 regardless of the drift distance. This helps a lot when resolving l/r ambiguities with the DAF. The idea is that for the first iteration of the DAF, the wire positions are taken. For small drift radii, the wire position does not bend the fit away from the trajectory, whereas the wire position for hits with large drift radii is further away from the trajectory and will therefore bias the fit if not weighted down.

Reimplemented from genfit::WireMeasurement.

virtual SharedPlanePtr genfit::WirePointMeasurement::constructPlane ( const StateOnPlane &  state ) const

virtual

Construct (virtual) detector plane (use state's AbsTrackRep). It's possible to make corrections to the plane here. The state should be defined somewhere near the measurement. For virtual planes, the state will be extrapolated to the POCA to point (SpacepointMeasurement) or line (WireMeasurement), and from this info the plane will be constructed.

Reimplemented from genfit::WireMeasurement.

int genfit::AbsMeasurement::getDetId ( ) const

inlineinherited

Definition at line 62 of file AbsMeasurement.h.

References genfit::AbsMeasurement::detId_.

{return detId_;}

unsigned int genfit::AbsMeasurement::getDim ( ) const

inlineinherited

Definition at line 69 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCoords_.

{return rawHitCoords_.GetNrows();}

int genfit::AbsMeasurement::getHitId ( ) const

inlineinherited

Definition at line 63 of file AbsMeasurement.h.

References genfit::AbsMeasurement::hitId_.

{return hitId_;}

virtual int genfit::WireMeasurement::getLeftRightResolution ( ) const

inlinevirtualinherited

Reimplemented from genfit::AbsMeasurement.

Definition at line 91 of file WireMeasurement.h.

References genfit::WireMeasurement::leftRight_.

{return leftRight_;}

double genfit::WireMeasurement::getMaxDistance ( )

inlineinherited

Definition at line 93 of file WireMeasurement.h.

References genfit::WireMeasurement::maxDistance_.

{return maxDistance_;}

const TVectorD& genfit::AbsMeasurement::getRawHitCoords ( ) const

inlineinherited

Definition at line 58 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCoords_.

{return rawHitCoords_;}

TVectorD& genfit::AbsMeasurement::getRawHitCoords ( )

inlineinherited

Definition at line 60 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCoords_.

{return rawHitCoords_;}

const TMatrixDSym& genfit::AbsMeasurement::getRawHitCov ( ) const

inlineinherited

Definition at line 59 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCov_.

{return rawHitCov_;}

TMatrixDSym& genfit::AbsMeasurement::getRawHitCov ( )

inlineinherited

Definition at line 61 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCov_.

{return rawHitCov_;}

TrackPoint* genfit::AbsMeasurement::getTrackPoint ( ) const

inlineinherited

Definition at line 55 of file AbsMeasurement.h.

References genfit::AbsMeasurement::trackPoint_.

{return trackPoint_;}

virtual bool genfit::WireMeasurement::isLeftRightMeasurement ( ) const

inlinevirtualinherited

If the AbsMeasurement is a wire hit, the left/right resolution will be used.

Reimplemented from genfit::AbsMeasurement.

Definition at line 90 of file WireMeasurement.h.

{return true;}

virtual void genfit::AbsMeasurement::Print ( const Option_t *  = "" ) const

virtualinherited

void genfit::AbsMeasurement::setDetId ( int  detId )

inlineinherited

Definition at line 73 of file AbsMeasurement.h.

References genfit::AbsMeasurement::detId_.

Referenced by PndFtsRecoHit2::PndFtsRecoHit2(), PndGemRecoHit2::PndGemRecoHit2(), PndMdtRecoHit2::PndMdtRecoHit2(), PndSdsRecoHit2::PndSdsRecoHit2(), and PndSttRecoHit2::PndSttRecoHit2().

{detId_ = detId;}

void genfit::AbsMeasurement::setHitId ( int  hitId )

inlineinherited

Definition at line 74 of file AbsMeasurement.h.

References genfit::AbsMeasurement::hitId_.

Referenced by PndFtsRecoHit2::PndFtsRecoHit2(), PndGemRecoHit2::PndGemRecoHit2(), PndMdtRecoHit2::PndMdtRecoHit2(), PndSdsRecoHit2::PndSdsRecoHit2(), and PndSttRecoHit2::PndSttRecoHit2().

{hitId_ = hitId;}

void genfit::WireMeasurement::setLeftRightResolution ( int  lr )

inherited

select how to resolve the left/right ambiguity: -1: negative (left) side on vector (track direction) x (wire direction) 0: auto select (take side with smallest distance to track) 1: positive (right) side on vector (track direction) x (wire direction)

void genfit::WireMeasurement::setMaxDistance ( double  d )

inlineinherited

Set maximum drift distance. This is used to calculate the start weights of the two measurementsOnPlane.

Definition at line 81 of file WireMeasurement.h.

References d, and genfit::WireMeasurement::maxDistance_.

Referenced by PndFtsRecoHit2::PndFtsRecoHit2(), and PndSttRecoHit2::PndSttRecoHit2().

{maxDistance_ = d;}

void genfit::AbsMeasurement::setRawHitCoords ( const TVectorD &  coords )

inlineinherited

Definition at line 71 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCoords_.

{rawHitCoords_ = coords;}

void genfit::AbsMeasurement::setRawHitCov ( const TMatrixDSym &  cov )

inlineinherited

Definition at line 72 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCov_.

{rawHitCov_ = cov;}

void genfit::AbsMeasurement::setTrackPoint ( TrackPoint *  tp )

inlineinherited

Definition at line 56 of file AbsMeasurement.h.

References genfit::AbsMeasurement::trackPoint_.

Referenced by genfit::TrackPoint::addRawMeasurement().

{trackPoint_ = tp;}

Member Data Documentation

int genfit::AbsMeasurement::detId_

protectedinherited

Definition at line 115 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getDetId(), and genfit::AbsMeasurement::setDetId().

int genfit::AbsMeasurement::hitId_

protectedinherited

Definition at line 116 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getHitId(), and genfit::AbsMeasurement::setHitId().

signed char genfit::WireMeasurement::leftRight_

protectedinherited

Definition at line 98 of file WireMeasurement.h.

Referenced by genfit::WireMeasurement::getLeftRightResolution().

double genfit::WireMeasurement::maxDistance_

protectedinherited

Definition at line 97 of file WireMeasurement.h.

Referenced by genfit::WireMeasurement::getMaxDistance(), and genfit::WireMeasurement::setMaxDistance().

TVectorD genfit::AbsMeasurement::rawHitCoords_

protectedinherited

Definition at line 113 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getDim(), genfit::AbsMeasurement::getRawHitCoords(), PndFtsRecoHit2::PndFtsRecoHit2(), PndGemRecoHit2::PndGemRecoHit2(), PndHitRecoHit2::PndHitRecoHit2(), PndMdtRecoHit2::PndMdtRecoHit2(), PndSdsRecoHit2::PndSdsRecoHit2(), PndSttRecoHit2::PndSttRecoHit2(), and genfit::AbsMeasurement::setRawHitCoords().

TMatrixDSym genfit::AbsMeasurement::rawHitCov_

protectedinherited

Definition at line 114 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getRawHitCov(), PndFtsRecoHit2::PndFtsRecoHit2(), PndGemRecoHit2::PndGemRecoHit2(), PndHitRecoHit2::PndHitRecoHit2(), PndMdtRecoHit2::PndMdtRecoHit2(), PndSdsRecoHit2::PndSdsRecoHit2(), PndSttRecoHit2::PndSttRecoHit2(), and genfit::AbsMeasurement::setRawHitCov().

TrackPoint* genfit::AbsMeasurement::trackPoint_

protectedinherited

Pointer to TrackPoint where the measurement belongs to.

Definition at line 119 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getTrackPoint(), and genfit::AbsMeasurement::setTrackPoint().

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

• WirePointMeasurement.h