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

SmoothingResult

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

private

Definition at line 30 of file StandAloneMuonSmoother.h.

Constructor & Destructor Documentation

StandAloneMuonSmoother()

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

Constructor.

Definition at line 24 of file StandAloneMuonSmoother.cc.

    : 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;
}

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

~StandAloneMuonSmoother()

StandAloneMuonSmoother::~StandAloneMuonSmoother ( )

virtual

Destructor.

Definition at line 49 of file StandAloneMuonSmoother.cc.

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

References theEstimator, theSmoother, and theUpdator.

Member Function Documentation

estimator()

MeasurementEstimator* StandAloneMuonSmoother::estimator ( void  ) const

inline

access at the estimator

Definition at line 51 of file StandAloneMuonSmoother.h.

{ return theEstimator; }

References theEstimator.

Referenced by renewTheSmoother().

propagator()

const Propagator * StandAloneMuonSmoother::propagator

(

)

const

access at the propagator

Definition at line 58 of file StandAloneMuonSmoother.cc.

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

References thePropagatorName, and theService.

Referenced by renewTheSmoother().

renewTheSmoother()

void StandAloneMuonSmoother::renewTheSmoother ( )

private

Definition at line 60 of file StandAloneMuonSmoother.cc.

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

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

Referenced by smooth().

smooth()

StandAloneMuonSmoother::SmoothingResult StandAloneMuonSmoother::smooth

(

const Trajectory &

inputTrajectory

)

Smoothes the trajectories.

Definition at line 70 of file StandAloneMuonSmoother.cc.

                                                                                                      {
  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);
}

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

smoother()

TrajectorySmoother* StandAloneMuonSmoother::smoother ( ) const

inline

access to the smoother

Definition at line 54 of file StandAloneMuonSmoother.h.

{ return theSmoother; }

References theSmoother.

Referenced by smooth().

updator()

TrajectoryStateUpdator* StandAloneMuonSmoother::updator ( ) const

inline

return the KFUpdator

Definition at line 45 of file StandAloneMuonSmoother.h.

{ return theUpdator; }

References theUpdator.

Referenced by renewTheSmoother().

Member Data Documentation

theErrorRescaling

double StandAloneMuonSmoother::theErrorRescaling

private

Definition at line 75 of file StandAloneMuonSmoother.h.

Referenced by StandAloneMuonSmoother().

theEstimator

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 estimator(), StandAloneMuonSmoother(), and ~StandAloneMuonSmoother().

theMaxChi2

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().

theNSigma

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().

thePropagatorName

std::string StandAloneMuonSmoother::thePropagatorName

private

Definition at line 60 of file StandAloneMuonSmoother.h.

Referenced by propagator(), and StandAloneMuonSmoother().

theService

const MuonServiceProxy* StandAloneMuonSmoother::theService

private

Definition at line 79 of file StandAloneMuonSmoother.h.

Referenced by propagator(), and renewTheSmoother().

theSmoother

TrajectorySmoother* StandAloneMuonSmoother::theSmoother

private

Definition at line 81 of file StandAloneMuonSmoother.h.

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

theUpdator

TrajectoryStateUpdator* StandAloneMuonSmoother::theUpdator

private

Definition at line 77 of file StandAloneMuonSmoother.h.

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