#include <Cluster1DMerger.h>

Public Member Functions
	Cluster1DMerger (const WeightEstimator< T > &, const math::XYZPoint &bs=math::XYZPoint(0., 0., 0.))

	Cluster1DMerger (const Cluster1DMerger &)

Cluster1D< T >	operator() (const Cluster1D< T > &first, const Cluster1D< T > &second) const

void	setBeamSpot (const math::XYZPoint &bs)

	~Cluster1DMerger ()

Private Attributes
math::XYZPoint	theBS

WeightEstimator< T > *	theEstimator

Detailed Description

template<class T>
class pixeltemp::Cluster1DMerger< T >

Definition at line 17 of file Cluster1DMerger.h.

Constructor & Destructor Documentation

template<class T>

Cluster1DMerger< T >::Cluster1DMerger	(	const WeightEstimator< T > &	est,
		const math::XYZPoint &	bs = `math::XYZPoint(0.,0.,0.)`
	)

Definition at line 37 of file Cluster1DMerger.h.

Referenced by pixeltemp::Cluster1DMerger< reco::Track >::setBeamSpot().

37 : theEstimator ( est.clone() ), theBS(bs)

38 {}

pixeltemp::Cluster1DMerger::theBS

math::XYZPoint theBS

Definition: Cluster1DMerger.h:28

pixeltemp::Cluster1DMerger::theEstimator

WeightEstimator< T > * theEstimator

Definition: Cluster1DMerger.h:27

WeightEstimator::clone

virtual WeightEstimator * clone() const =0

template<class T >

Cluster1DMerger< T >::~Cluster1DMerger ( )

Definition at line 41 of file Cluster1DMerger.h.

References pixeltemp::Cluster1DMerger< T >::theEstimator.

Referenced by pixeltemp::Cluster1DMerger< reco::Track >::setBeamSpot().

 {
     delete theEstimator;
 }

template<class T>

Cluster1DMerger< T >::Cluster1DMerger ( const Cluster1DMerger< T > & other )

Definition at line 47 of file Cluster1DMerger.h.

                                                                     :
         theEstimator ( other.theEstimator->clone() ), theBS(other.theBS)
 {}

Member Function Documentation

template<class T>

Cluster1D< T > Cluster1DMerger< T >::operator()	(	const Cluster1D< T > &	first,
		const Cluster1D< T > &	second
	)		const

Definition at line 52 of file Cluster1DMerger.h.

References Measurement1D::error(), mps_fire::i, Cluster1D< T >::position(), mathSSE::sqrt(), pixeltemp::Cluster1DMerger< T >::theBS, pixeltemp::Cluster1DMerger< T >::theEstimator, l1t::tracks, Cluster1D< T >::tracks(), Measurement1D::value(), and Cluster1D< T >::weight().

Referenced by pixeltemp::Cluster1DMerger< reco::Track >::setBeamSpot().

 {
     std::vector < const T * > tracks = first.tracks();
     std::vector < const T * > sectracks = second.tracks();
     for ( typename std::vector< const T * >::const_iterator i=sectracks.begin(); i!=sectracks.end() ; ++i )
     {
         tracks.push_back ( *i );
     };
     float newpos = ( first.position().value() * first.weight() / first.position().error() / first.position().error() +
                      second.position().value() * second.weight() / second.position().error() / second.position().error() ) /
                    ( first.weight() / first.position().error()/ first.position().error() +
                      second.weight() / second.position().error()/ second.position().error() );
 
     float newerr = sqrt ( first.position().error() * first.position().error() +
                           second.position().error() * second.position().error() );
     float newWeight = theEstimator->weight ( tracks );
 
     // Now try a different method
     float sumUp = 0;
     float sumDown = 0;
     float err = 0;
     for (unsigned int i=0; i<tracks.size(); ++i) {
 
 //      float err2 = tracks[i]->covariance( reco::TrackBase::i_dz, reco::TrackBase::i_dz );
       float err2 = tracks[i]->dzError(); err2 *= err2;    
       
       if (err2 != 0){
     sumUp += tracks[i]->dz(theBS) * 1/err2; // error-weighted average of Z at IP
     sumDown += 1/err2;
       }
       err += sqrt( err2 );
     }  
       
     newpos = sumUp/sumDown;
     newerr = err/tracks.size()/sqrt(1.0*tracks.size());
 
     Measurement1D newmeas ( newpos, newerr );
     return Cluster1D<T> ( newmeas, tracks, newWeight );
 }