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pixeltemp::Cluster1DMerger< T > Class Template Reference

#include <RecoPixelVertexing/PixelVertexFinding/interface/Cluster1DMerger.h>

List of all members.

Public Member Functions
	Cluster1DMerger (const Cluster1DMerger &)
	Cluster1DMerger (const WeightEstimator< T > &)
Cluster1D< T >	operator() (const Cluster1D< T > &first, const Cluster1D< T > &second) const
	~Cluster1DMerger ()
Private Attributes
WeightEstimator< T > *	theEstimator

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Detailed Description

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

Definition at line 15 of file Cluster1DMerger.h.

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Constructor & Destructor Documentation

template<class T>

Cluster1DMerger< T >::Cluster1DMerger

(

const WeightEstimator< T > &

est

)

[inline]

Definition at line 33 of file Cluster1DMerger.h.

                                   : theEstimator ( est.clone() )
{}

template<class T>

Cluster1DMerger< T >::~Cluster1DMerger

(

)

[inline]

Definition at line 37 of file Cluster1DMerger.h.

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

{
    delete theEstimator;
}

template<class T>

Cluster1DMerger< T >::Cluster1DMerger

(

const Cluster1DMerger< T > &

other

)

[inline]

Definition at line 43 of file Cluster1DMerger.h.

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

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Member Function Documentation

template<class T>

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

Definition at line 48 of file Cluster1DMerger.h.

References err, err2, Measurement1D::error(), i, Cluster1D< T >::position(), funct::sqrt(), pixeltemp::Cluster1DMerger< T >::theEstimator, Cluster1D< T >::tracks(), tracks, Measurement1D::value(), and Cluster1D< T >::weight().

{
    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() * 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 );
}

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Member Data Documentation

template<class T>

WeightEstimator<T>* pixeltemp::Cluster1DMerger< T >::theEstimator [private]

Definition at line 24 of file Cluster1DMerger.h.

Referenced by pixeltemp::Cluster1DMerger< T >::operator()(), and pixeltemp::Cluster1DMerger< T >::~Cluster1DMerger().

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

• RecoPixelVertexing/PixelVertexFinding/interface/Cluster1DMerger.h

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