Kalman filter implementation with linearization around a reference track. More...

#include <KalmanFitterRefTrack.h>

Inheritance diagram for genfit::KalmanFitterRefTrack:

Public Member Functions
	KalmanFitterRefTrack (unsigned int maxIterations=4, double deltaPval=1e-3, double blowUpFactor=1e3)

virtual	~KalmanFitterRefTrack ()

TrackPoint *	fitTrack (Track tr, const AbsTrackRep rep, double &chi2, double &ndf, int direction)
	Fit the track. More...

void	processTrackWithRep (Track tr, const AbsTrackRep rep, bool resortHits=false)

bool	prepareTrack (Track tr, const AbsTrackRep rep, bool setSortingParams, int &nFailedHits)
	Prepare the track. More...

void	setRefitAll (bool refit=true)
	If true always refit all points, otherwise fit points only if reference states have changed. More...

void	setDeltaChi2Ref (double dChi2)

Public Member Functions inherited from genfit::AbsKalmanFitter
	AbsKalmanFitter (unsigned int maxIterations=4, double deltaPval=1e-3, double blowUpFactor=1e3)

virtual	~AbsKalmanFitter ()

void	getChiSquNdf (const Track tr, const AbsTrackRep rep, double &bChi2, double &fChi2, double &bNdf, double &fNdf) const

double	getChiSqu (const Track tr, const AbsTrackRep rep, int direction=-1) const

double	getNdf (const Track tr, const AbsTrackRep rep, int direction=-1) const

double	getRedChiSqu (const Track tr, const AbsTrackRep rep, int direction=-1) const

double	getPVal (const Track tr, const AbsTrackRep rep, int direction=-1) const

unsigned int	getMinIterations () const

unsigned int	getMaxIterations () const

double	getDeltaPval () const

double	getRelChi2Change () const

double	getBlowUpFactor () const

bool	getResetOffDiagonals () const

double	getBlowUpMaxVal () const

eMultipleMeasurementHandling	getMultipleMeasurementHandling () const

int	getMaxFailedHits () const

virtual void	setMinIterations (unsigned int n)
	Set the minimum number of iterations. More...

virtual void	setMaxIterations (unsigned int n)
	Set the maximum number of iterations. More...

void	setDeltaPval (double deltaPval)
	Set Convergence criterion. More...

void	setRelChi2Change (double relChi2Change)

void	setBlowUpFactor (double blowUpFactor)

void	setResetOffDiagonals (bool resetOffDiagonals)

void	setBlowUpMaxVal (double blowUpMaxVal)
	Limit the cov entries to this maximum value when blowing up the cov. Set to negative value to disable. Default is 1.E6. More...

void	setMultipleMeasurementHandling (eMultipleMeasurementHandling mmh)
	How should multiple measurements be handled? More...

virtual void	setMaxFailedHits (int val)

bool	isTrackPrepared (const Track tr, const AbsTrackRep rep) const

bool	isTrackFitted (const Track tr, const AbsTrackRep rep) const

bool	canIgnoreWeights () const
	returns if the fitter can ignore the weights and handle the MeasurementOnPlanes as if they had weight 1. More...

Public Member Functions inherited from genfit::AbsFitter
	AbsFitter ()

virtual	~AbsFitter ()

void	processTrack (Track *, bool resortHits=false)

virtual void	setDebugLvl (unsigned int lvl=1)

Additional Inherited Members
Protected Member Functions inherited from genfit::AbsKalmanFitter
const std::vector< MeasurementOnPlane * >	getMeasurements (const KalmanFitterInfo fi, const TrackPoint tp, int direction) const
	get the measurementsOnPlane taking the multipleMeasurementHandling_ into account More...

Protected Attributes inherited from genfit::AbsKalmanFitter
unsigned int	minIterations_
	Minimum number of iterations to attempt. Forward and backward are counted as one iteration. More...

unsigned int	maxIterations_
	Maximum number of iterations to attempt. Forward and backward are counted as one iteration. More...

double	deltaPval_
	Convergence criterion. More...

double	relChi2Change_

double	blowUpFactor_
	Blow up the covariance of the forward (backward) fit by this factor before seeding the backward (forward) fit. More...

bool	resetOffDiagonals_
	Reset the off-diagonals to 0 when blowing up the cov. More...

double	blowUpMaxVal_
	Limit the cov entries to this maxuimum value when blowing up the cov. More...

eMultipleMeasurementHandling	multipleMeasurementHandling_
	How to handle if there are multiple MeasurementsOnPlane. More...

int	maxFailedHits_

Protected Attributes inherited from genfit::AbsFitter
unsigned int	debugLvl_

Detailed Description

Kalman filter implementation with linearization around a reference track.

Definition at line 36 of file KalmanFitterRefTrack.h.

Constructor & Destructor Documentation

◆ KalmanFitterRefTrack()

genfit::KalmanFitterRefTrack::KalmanFitterRefTrack	(	unsigned int	maxIterations = `4`,
		double	deltaPval = `1e-3`,
		double	blowUpFactor = `1e3`
	)

inline

Definition at line 38 of file KalmanFitterRefTrack.h.

     : AbsKalmanFitter(maxIterations, deltaPval, blowUpFactor), refitAll_(false), deltaChi2Ref_(1)
   {
   }

◆ ~KalmanFitterRefTrack()

virtual genfit::KalmanFitterRefTrack::~KalmanFitterRefTrack ( )

inlinevirtual

Definition at line 43 of file KalmanFitterRefTrack.h.

References fitTrack(), prepareTrack(), and processTrackWithRep().

43 {}

Member Function Documentation

◆ fitTrack()

TrackPoint* genfit::KalmanFitterRefTrack::fitTrack	(	Track *	tr,
		const AbsTrackRep *	rep,
		double &	chi2,
		double &	ndf,
		int	direction
	)

Fit the track.

Needs a prepared track! Return last TrackPoint that has been processed.

Referenced by ~KalmanFitterRefTrack().

◆ prepareTrack()

bool genfit::KalmanFitterRefTrack::prepareTrack	(	Track *	tr,
		const AbsTrackRep *	rep,
		bool	setSortingParams,
		int &	nFailedHits
	)

Prepare the track.

Calc all reference states. If setSortingParams is true, the extrapolation lengths will be set as sorting parameters of the TrackPoints. Returns if the track has been changed.

Referenced by ~KalmanFitterRefTrack().

◆ processTrackWithRep()

void genfit::KalmanFitterRefTrack::processTrackWithRep	(	Track *	,
		const AbsTrackRep *	,
		bool	resortHits = `false`
	)

virtual

Process Track with one AbsTrackRep of the Track. Optionally resort the hits if necessary (and supported by the fitter)

Implements genfit::AbsFitter.

Referenced by ~KalmanFitterRefTrack().

◆ setDeltaChi2Ref()

void genfit::KalmanFitterRefTrack::setDeltaChi2Ref ( double dChi2 )

inline

When will the reference track be updated? If (smoothedState - referenceState) * smoothedCov^(-1) * (smoothedState - referenceState)^T >= deltaChi2Ref_.

Definition at line 69 of file KalmanFitterRefTrack.h.

69 { deltaChi2Ref_ = dChi2; }

◆ setRefitAll()

void genfit::KalmanFitterRefTrack::setRefitAll ( bool refit = true )

inline

If true always refit all points, otherwise fit points only if reference states have changed.

Definition at line 63 of file KalmanFitterRefTrack.h.

63 { refitAll_ = refit; }

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

KalmanFitterRefTrack.h

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ KalmanFitterRefTrack()

◆ ~KalmanFitterRefTrack()

Member Function Documentation

◆ fitTrack()

◆ prepareTrack()

◆ processTrackWithRep()

◆ setDeltaChi2Ref()

◆ setRefitAll()