StandAloneMuonSmoother Class Reference

#include <StandAloneMuonSmoother.h>

Public Member Functions
MeasurementEstimator *	estimator () const
	access at the estimator More...
const Propagator *	propagator () const
	access at the propagator More...
SmoothingResult	smooth (const Trajectory &)
	Smoothes the trajectories. More...
TrajectorySmoother *	smoother () const
	access to the smoother More...
	StandAloneMuonSmoother (const edm::ParameterSet &par, const MuonServiceProxy *service)
	Constructor. More...
TrajectoryStateUpdator *	updator () const
	return the KFUpdator More...
virtual	~StandAloneMuonSmoother ()
	Destructor. More...

Private Types
typedef std::pair< bool, Trajectory >	SmoothingResult

Private Member Functions
void	renewTheSmoother ()

Private Attributes
double	theErrorRescaling
MeasurementEstimator *	theEstimator
double	theMaxChi2
	The max allowed chi2 to accept a rechit in the fit. More...
double	theNSigma
std::string	thePropagatorName
const MuonServiceProxy *	theService
TrajectorySmoother *	theSmoother
TrajectoryStateUpdator *	theUpdator

Detailed Description

Smooth a trajectory using the standard Kalman Filter smoother. This class contains the KFTrajectorySmoother and takes care to update the it whenever the propagator change.

Author

R. Bellan - INFN Torino ricca.nosp@m.rdo..nosp@m.bella.nosp@m.n@ce.nosp@m.rn.ch

Definition at line 29 of file StandAloneMuonSmoother.h.

Member Typedef Documentation

typedef std::pair<bool, Trajectory> StandAloneMuonSmoother::SmoothingResult

private

Definition at line 30 of file StandAloneMuonSmoother.h.

Constructor & Destructor Documentation

StandAloneMuonSmoother::StandAloneMuonSmoother	(	const edm::ParameterSet &	par,
		const MuonServiceProxy *	service
	)

Constructor.

Definition at line 24 of file StandAloneMuonSmoother.cc.

References Chi2MeasurementEstimator_cfi::Chi2MeasurementEstimator, edm::ParameterSet::getParameter(), theErrorRescaling, theEstimator, theMaxChi2, theNSigma, thePropagatorName, theSmoother, and theUpdator.

    : theService(service) {
  // The max allowed chi2 to accept a rechit in the fit
  theMaxChi2 = par.getParameter<double>("MaxChi2");

  // The errors of the trajectory state are multiplied by nSigma
  // to define acceptance of BoundPlane and maximalLocalDisplacement
  theNSigma = par.getParameter<double>("NumberOfSigma");  // default = 3.

  // The estimator: makes the decision wheter a measure is good or not
  // it isn't used by the updator which does the real fit. In fact, in principle,
  // a looser request onto the measure set can be requested
  // (w.r.t. the request on the accept/reject measure in the fit)
  theEstimator = new Chi2MeasurementEstimator(theMaxChi2, theNSigma);

  theErrorRescaling = par.getParameter<double>("ErrorRescalingFactor");

  thePropagatorName = par.getParameter<string>("Propagator");

  theUpdator = new KFUpdator();

  // The Kalman smoother
  theSmoother = nullptr;
}

StandAloneMuonSmoother::~StandAloneMuonSmoother ( )

virtual

Destructor.

Definition at line 49 of file StandAloneMuonSmoother.cc.

References theEstimator, theSmoother, and theUpdator.

                                                {
  if (theEstimator)
    delete theEstimator;
  if (theUpdator)
    delete theUpdator;
  if (theSmoother)
    delete theSmoother;
}

Member Function Documentation

MeasurementEstimator* StandAloneMuonSmoother::estimator ( void  ) const

inline

access at the estimator

Definition at line 51 of file StandAloneMuonSmoother.h.

Referenced by renewTheSmoother().

{ return theEstimator; }

const Propagator * StandAloneMuonSmoother::propagator

(

)

const

access at the propagator

Definition at line 58 of file StandAloneMuonSmoother.cc.

References thePropagatorName, and theService.

Referenced by renewTheSmoother().

{ return &*theService->propagator(thePropagatorName); }

void StandAloneMuonSmoother::renewTheSmoother ( )

private

Definition at line 60 of file StandAloneMuonSmoother.cc.

References estimator(), propagator(), theService, theSmoother, and updator().

Referenced by smooth().

                                              {
  if (theService->isTrackingComponentsRecordChanged()) {
    if (theSmoother)
      delete theSmoother;
    theSmoother = new KFTrajectorySmoother(propagator(), updator(), estimator());
  }
  if (!theSmoother)
    theSmoother = new KFTrajectorySmoother(propagator(), updator(), estimator());
}

StandAloneMuonSmoother::SmoothingResult StandAloneMuonSmoother::smooth

(

const Trajectory &

inputTrajectory

)

Smoothes the trajectories.

Definition at line 70 of file StandAloneMuonSmoother.cc.

References LogTrace, metname, renewTheSmoother(), smoother(), and TrajectorySmoother::trajectories().

                                                                                                      {
  const string metname = "Muon|RecoMuon|StandAloneMuonSmoother";

  renewTheSmoother();

  vector<Trajectory> trajectoriesSM = smoother()->trajectories(inputTrajectory);

  if (trajectoriesSM.empty()) {
    LogTrace(metname) << "No Track smoothed!";
    return SmoothingResult(false, inputTrajectory);
  }

  Trajectory smoothed = trajectoriesSM.front();

  return SmoothingResult(true, smoothed);
}

TrajectorySmoother* StandAloneMuonSmoother::smoother ( ) const

inline

access to the smoother

Definition at line 54 of file StandAloneMuonSmoother.h.

Referenced by smooth().

{ return theSmoother; }

TrajectoryStateUpdator* StandAloneMuonSmoother::updator ( ) const

inline

return the KFUpdator

Definition at line 45 of file StandAloneMuonSmoother.h.

References TrackCandidateProducer_cfi::propagator.

Referenced by renewTheSmoother().

{ return theUpdator; }

Member Data Documentation

double StandAloneMuonSmoother::theErrorRescaling

private

Definition at line 75 of file StandAloneMuonSmoother.h.

Referenced by StandAloneMuonSmoother().

MeasurementEstimator* StandAloneMuonSmoother::theEstimator

private

The estimator: makes the decision wheter a measure is good or not it isn't used by the updator which does the real fit. In fact, in principle, a looser request onto the measure set can be requested (w.r.t. the request on the accept/reject measure in the fit)

Definition at line 73 of file StandAloneMuonSmoother.h.

Referenced by StandAloneMuonSmoother(), and ~StandAloneMuonSmoother().

double StandAloneMuonSmoother::theMaxChi2

private

The max allowed chi2 to accept a rechit in the fit.

Definition at line 63 of file StandAloneMuonSmoother.h.

Referenced by StandAloneMuonSmoother().

double StandAloneMuonSmoother::theNSigma

private

The errors of the trajectory state are multiplied by nSigma to define acceptance of BoundPlane and maximalLocalDisplacement

Definition at line 67 of file StandAloneMuonSmoother.h.

Referenced by StandAloneMuonSmoother().

std::string StandAloneMuonSmoother::thePropagatorName

private

Definition at line 60 of file StandAloneMuonSmoother.h.

Referenced by propagator(), and StandAloneMuonSmoother().

const MuonServiceProxy* StandAloneMuonSmoother::theService

private

Definition at line 79 of file StandAloneMuonSmoother.h.

Referenced by propagator(), and renewTheSmoother().

TrajectorySmoother* StandAloneMuonSmoother::theSmoother

private

Definition at line 81 of file StandAloneMuonSmoother.h.

Referenced by renewTheSmoother(), StandAloneMuonSmoother(), and ~StandAloneMuonSmoother().

TrajectoryStateUpdator* StandAloneMuonSmoother::theUpdator

private

Definition at line 77 of file StandAloneMuonSmoother.h.

Referenced by StandAloneMuonSmoother(), and ~StandAloneMuonSmoother().