#include <Chi2MeasurementEstimator.h>

Inheritance diagram for Chi2MeasurementEstimator:

Public Member Functions
	Chi2MeasurementEstimator (double maxChi2, double nSigma=3.)

virtual Chi2MeasurementEstimator *	clone () const

virtual std::pair< bool, double >	estimate (const TrajectoryStateOnSurface &, const TransientTrackingRecHit &) const

template<unsigned int D>
std::pair< bool, double >	estimate (const TrajectoryStateOnSurface &, const TransientTrackingRecHit &) const

Public Member Functions inherited from Chi2MeasurementEstimatorBase
	Chi2MeasurementEstimatorBase (double maxChi2, double nSigma=3.)

double	chiSquaredCut () const

virtual bool	estimate (const TrajectoryStateOnSurface &ts, const BoundPlane &plane) const

virtual Local2DVector	maximalLocalDisplacement (const TrajectoryStateOnSurface &ts, const BoundPlane &plane) const

double	nSigmaCut () const

Public Member Functions inherited from MeasurementEstimator
virtual	~MeasurementEstimator ()

Additional Inherited Members
Public Types inherited from MeasurementEstimator
typedef std::pair< bool, double >	HitReturnType

typedef Vector2DBase< float, LocalTag >	Local2DVector

typedef bool	SurfaceReturnType

Protected Member Functions inherited from Chi2MeasurementEstimatorBase
std::pair< bool, double >	returnIt (double est) const

Detailed Description

A Chi2 Measurement Estimator. Computhes the Chi^2 of a TrajectoryState with a RecHit or a BoundPlane. The TrajectoryState must have errors. Works for any RecHit dimension. Ported from ORCA.

Date:: 2007/05/09 14:05:13

Revision:: 1.3

Author: todorov, cerati

Definition at line 17 of file Chi2MeasurementEstimator.h.

Constructor & Destructor Documentation

Chi2MeasurementEstimator::Chi2MeasurementEstimator	(	double	maxChi2,
		double	nSigma = `3.`
	)

inlineexplicit

Construct with cuts on chi2 and nSigma. The cut on Chi2 is used to define the acceptance of RecHits. The errors of the trajectory state are multiplied by nSigma to define acceptance of BoundPlane and maximalLocalDisplacement.

Definition at line 25 of file Chi2MeasurementEstimator.h.

Referenced by clone().

25 :

26 Chi2MeasurementEstimatorBase( maxChi2, nSigma) {}

Chi2MeasurementEstimatorBase::Chi2MeasurementEstimatorBase

Chi2MeasurementEstimatorBase(double maxChi2, double nSigma=3.)

Definition: Chi2MeasurementEstimatorBase.h:23

Member Function Documentation

virtual Chi2MeasurementEstimator* Chi2MeasurementEstimator::clone ( void ) const

inlinevirtual

Implements MeasurementEstimator.

Definition at line 33 of file Chi2MeasurementEstimator.h.

References Chi2MeasurementEstimator().

                                                   {
     return new Chi2MeasurementEstimator(*this);
   }

std::pair< bool, double > Chi2MeasurementEstimator::estimate	(	const TrajectoryStateOnSurface &	ts,
		const TransientTrackingRecHit &	hit
	)		const

virtual

Returns pair( true, value) if the TrajectoryStateOnSurface is compatible with the RecHit, and pair( false, value) if it is not compatible. The TrajectoryStateOnSurface must be on the same Surface as the RecHit. For an estimator where there is no value computed, e.g. fixed window estimator, only the first(bool) part is of interest.

Implements Chi2MeasurementEstimatorBase.

Definition at line 8 of file Chi2MeasurementEstimator.cc.

References TrackingRecHit::dimension(), and edm::hlt::Exception.

Referenced by CosmicTrajectoryBuilder::AddHit(), CRackTrajectoryBuilder::AddHit(), GsfChi2MeasurementEstimator::estimate(), MuonChi2MeasurementEstimator::estimate(), Chi2SwitchingEstimator::estimate(), CosmicMuonSmoother::fit(), MuonRoadTrajectoryBuilder::GatherHits(), and CosmicMuonSmoother::smooth().

                                                                  {
     switch (aRecHit.dimension()) {
         case 1: return estimate<1>(tsos,aRecHit);
         case 2: return estimate<2>(tsos,aRecHit);
         case 3: return estimate<3>(tsos,aRecHit);
         case 4: return estimate<4>(tsos,aRecHit);
         case 5: return estimate<5>(tsos,aRecHit);
     }
     throw cms::Exception("RecHit of invalid size (not 1,2,3,4,5)");
 }

template<unsigned int D>

std::pair<bool,double> Chi2MeasurementEstimator::estimate	(	const TrajectoryStateOnSurface &	ts,
		const TransientTrackingRecHit &	hit
	)		const