Cluster1DMerger< T > Class Template Reference

#include <Cluster1DMerger.h>

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

Private Attributes
WeightEstimator< T > *	theEstimator

Detailed Description

template<class T>
class Cluster1DMerger< T >

The class that should always be used to merge two Cluster1D into a single Cluster1D.

Definition at line 14 of file Cluster1DMerger.h.

Constructor & Destructor Documentation

template<class T >

Cluster1DMerger< T >::Cluster1DMerger

(

const WeightEstimator< T > &

est

)

Definition at line 32 of file Cluster1DMerger.h.

                                   : theEstimator ( est.clone() )
{}

template<class T >

Cluster1DMerger< T >::~Cluster1DMerger

(

)

Definition at line 36 of file Cluster1DMerger.h.

References Cluster1DMerger< T >::theEstimator.

{
    delete theEstimator;
}

template<class T >

Cluster1DMerger< T >::Cluster1DMerger

(

const Cluster1DMerger< T > &

other

)

Definition at line 42 of file Cluster1DMerger.h.

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

Member Function Documentation

template<class T >

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

Definition at line 47 of file Cluster1DMerger.h.

References Measurement1D::error(), i, Cluster1D< T >::position(), mathSSE::sqrt(), Cluster1DMerger< T >::theEstimator, l1t::tracks, Cluster1D< T >::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 );
    };
    double V1=first.position().error() * first.position().error();
    double V2=second.position().error() * second.position().error();
    double C1=first.weight() / V1;
    double C2=second.weight() / V2;

    double newpos = ( first.position().value() * C1 +
                     second.position().value() * C2 ) / ( C1 + C2 );

    double newerr = sqrt ( C1 * C1 * V1 + C2 * C2 * V2 ) / ( C1 + C2 );
    double newWeight = theEstimator->weight ( tracks );

    Measurement1D newmeas ( newpos, newerr );
    return Cluster1D<T> ( newmeas, tracks, newWeight );
}

Member Data Documentation

template<class T>

WeightEstimator<T>* Cluster1DMerger< T >::theEstimator

private

Definition at line 23 of file Cluster1DMerger.h.

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