Collects information needed and produced by a AbsKalmanFitter implementations and is specific to one AbsTrackRep of the Track. More...

#include <KalmanFitterInfo.h>

Inheritance diagram for KalmanFitterInfo:

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Collaboration diagram for KalmanFitterInfo:

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Public Member Functions
	KalmanFitterInfo (const TrackPoint trackPoint, const AbsTrackRep rep)

virtual KalmanFitterInfo *	clone () const override
	Deep copy ctor for polymorphic class.

ReferenceStateOnPlane *	getReferenceState () const

MeasuredStateOnPlane *	getForwardPrediction () const

MeasuredStateOnPlane *	getBackwardPrediction () const

MeasuredStateOnPlane *	getPrediction (int direction) const

KalmanFittedStateOnPlane *	getForwardUpdate () const

KalmanFittedStateOnPlane *	getBackwardUpdate () const

KalmanFittedStateOnPlane *	getUpdate (int direction) const

const std::vector< genfit::MeasurementOnPlane * > &	getMeasurementsOnPlane () const

MeasurementOnPlane *	getMeasurementOnPlane (int i=0) const

MeasurementOnPlane	getAvgWeightedMeasurementOnPlane (bool ignoreWeights=false) const
	Get weighted mean of all measurements. More...

MeasurementOnPlane *	getClosestMeasurementOnPlane (const StateOnPlane *) const
	Get measurements which is closest to state.

unsigned int	getNumMeasurements () const

std::vector< double >	getWeights () const
	Get weights of measurements.

bool	areWeightsFixed () const
	Are the weights fixed?

const MeasuredStateOnPlane &	getFittedState (bool biased=true) const override
	Get unbiased or biased (default) smoothed state.

MeasurementOnPlane	getResidual (unsigned int iMeasurement=0, bool biased=false, bool onlyMeasurementErrors=true) const override
	Get unbiased (default) or biased residual from ith measurement.

double	getSmoothedChi2 (unsigned int iMeasurement=0) const

bool	hasMeasurements () const override

bool	hasReferenceState () const override

bool	hasForwardPrediction () const override

bool	hasBackwardPrediction () const override

bool	hasForwardUpdate () const override

bool	hasBackwardUpdate () const override

bool	hasUpdate (int direction) const override

bool	hasPredictionsAndUpdates () const

void	setReferenceState (ReferenceStateOnPlane *referenceState)

void	setForwardPrediction (MeasuredStateOnPlane *forwardPrediction)

void	setBackwardPrediction (MeasuredStateOnPlane *backwardPrediction)

void	setPrediction (MeasuredStateOnPlane *prediction, int direction)

void	setForwardUpdate (KalmanFittedStateOnPlane *forwardUpdate)

void	setBackwardUpdate (KalmanFittedStateOnPlane *backwardUpdate)

void	setUpdate (KalmanFittedStateOnPlane *update, int direction)

void	setMeasurementsOnPlane (const std::vector< genfit::MeasurementOnPlane * > &measurementsOnPlane)

void	addMeasurementOnPlane (MeasurementOnPlane *measurementOnPlane)

void	addMeasurementsOnPlane (const std::vector< genfit::MeasurementOnPlane * > &measurementsOnPlane)

void	setWeights (const std::vector< double > &)
	Set weights of measurements.

void	fixWeights (bool arg=true)

void	setRep (const AbsTrackRep *rep) override

void	deleteForwardInfo () override

void	deleteBackwardInfo () override

void	deletePredictions ()

void	deleteReferenceInfo () override

void	deleteMeasurementInfo () override

virtual void	Print (const Option_t *="") const override

virtual bool	checkConsistency (const genfit::PruneFlags *=nullptr) const override

const TrackPoint *	getTrackPoint () const

const AbsTrackRep *	getRep () const

void	setTrackPoint (const TrackPoint *tp)

virtual bool	hasPrediction (int direction) const

const SharedPlanePtr &	getPlane () const

void	setPlane (const SharedPlanePtr &plane)

Protected Attributes
const TrackPoint *	trackPoint_
	Pointer to TrackPoint where the FitterInfo belongs to.

const AbsTrackRep *	rep_
	No ownership. More...

SharedPlanePtr	sharedPlane_
	No ownership.

Private Attributes
std::unique_ptr< ReferenceStateOnPlane >	referenceState_
	Reference state. Used by KalmanFitterRefTrack.

std::unique_ptr< MeasuredStateOnPlane >	forwardPrediction_

std::unique_ptr< KalmanFittedStateOnPlane >	forwardUpdate_

std::unique_ptr< MeasuredStateOnPlane >	backwardPrediction_

std::unique_ptr< KalmanFittedStateOnPlane >	backwardUpdate_

std::unique_ptr< MeasuredStateOnPlane >	fittedStateUnbiased_

std::unique_ptr< MeasuredStateOnPlane >	fittedStateBiased_
	cache

std::vector< MeasurementOnPlane * >	measurementsOnPlane_
	cache

bool	fixWeights_

Detailed Description

Collects information needed and produced by a AbsKalmanFitter implementations and is specific to one AbsTrackRep of the Track.

Definition at line 44 of file KalmanFitterInfo.h.

Member Function Documentation

◆ getAvgWeightedMeasurementOnPlane()

MeasurementOnPlane getAvgWeightedMeasurementOnPlane ( bool ignoreWeights = false ) const

Get weighted mean of all measurements.

Parameters

ignoreWeights If set, the weights of the individual measurements will be ignored (they will be treated as if they all had weight 1)

Definition at line 78 of file KalmanFitterInfo.cc.

                                                                                               {
  
   MeasurementOnPlane retVal(*(measurementsOnPlane_[0]));
  
   if(measurementsOnPlane_.size() == 1) {
     if (ignoreWeights) {
       retVal.setWeight(1.);
     }
     else {
       double weight = (measurementsOnPlane_[0])->getWeight();
       if (weight != 1.) {
         retVal.getCov() *= 1. / weight;
       }
       retVal.setWeight(weight);
     }
     return retVal;
   }
  
   // more than one hit
  
   // cppcheck-suppress unreadVariable
   double sumOfWeights(0), weight(0);
  
   retVal.getState().Zero();
   retVal.getCov().Zero();
  
   TMatrixDSym covInv;
  
   for(unsigned int i=0; i<measurementsOnPlane_.size(); ++i) {
  
     if (i>0) {
       // make sure we have compatible measurement types
       // TODO: replace with Exceptions!
       assert(measurementsOnPlane_[i]->getPlane() == measurementsOnPlane_[0]->getPlane());
       assert(*(measurementsOnPlane_[i]->getHMatrix()) == *(measurementsOnPlane_[0]->getHMatrix()));
     }
  
     tools::invertMatrix(measurementsOnPlane_[i]->getCov(), covInv); // invert cov
     if (ignoreWeights) {
       sumOfWeights += 1.;
     }
     else {
       weight = measurementsOnPlane_[i]->getWeight();
       sumOfWeights += weight;
       covInv *= weight; // weigh cov
     }
     retVal.getCov() += covInv; // covInv is already inverted and weighted
  
     retVal.getState() += covInv * measurementsOnPlane_[i]->getState();
   }
  
   // invert Cov
   tools::invertMatrix(retVal.getCov());
  
   retVal.getState() *= retVal.getCov();
  
   retVal.setWeight(sumOfWeights);
  
   return retVal;
 }

Member Data Documentation

◆ rep_

const AbsTrackRep* rep_

protectedinherited

No ownership.

Pointer to AbsTrackRep with respect to which the FitterInfo is defined

Definition at line 92 of file AbsFitterInfo.h.

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

genfit2/code2/fitters/include/KalmanFitterInfo.h
genfit2/code2/fitters/src/KalmanFitterInfo.cc

Public Member Functions

Protected Attributes

Private Attributes

Detailed Description

Member Function Documentation

◆ getAvgWeightedMeasurementOnPlane()

Member Data Documentation

◆ rep_