LMSLinearizationPointFinder Class Reference

#include <LMSLinearizationPointFinder.h>

Inheritance diagram for LMSLinearizationPointFinder:

Public Member Functions
virtual LMSLinearizationPointFinder *	clone () const
	LMSLinearizationPointFinder (const signed int n_pairs=10)
	LMSLinearizationPointFinder (const RecTracksDistanceMatrix *m, const signed int n_pairs=-1)
Public Member Functions inherited from CrossingPtBasedLinearizationPointFinder
	CrossingPtBasedLinearizationPointFinder (const ModeFinder3d &algo, const signed int n_pairs=5)
	CrossingPtBasedLinearizationPointFinder (const RecTracksDistanceMatrix *m, const ModeFinder3d &algo, const signed int n_pairs=-1)
	CrossingPtBasedLinearizationPointFinder (const CrossingPtBasedLinearizationPointFinder &)
virtual GlobalPoint	getLinearizationPoint (const std::vector< reco::TransientTrack > &) const
virtual GlobalPoint	getLinearizationPoint (const std::vector< FreeTrajectoryState > &) const
	~CrossingPtBasedLinearizationPointFinder ()
Public Member Functions inherited from LinearizationPointFinder
virtual	~LinearizationPointFinder ()

Additional Inherited Members
Protected Attributes inherited from CrossingPtBasedLinearizationPointFinder
const RecTracksDistanceMatrix *	theMatrix
signed int	theNPairs
const bool	useMatrix

Detailed Description

A linearization point finder. It works the following way:

1. Calculate in an optimal way 'n_pairs' different crossing points. Optimal in this context means the following: a. Try to use as many different tracks as possible; avoid using the same track all the time. b. Use the most energetic tracks. c. Try not to group the most energetic tracks together. Try to group more energetic tracks with less energetic tracks. We assume collimated bundles here, so this is why. d. Perform optimally. Do not sort more tracks (by total energy, see b) than necessary. e. If n_pairs >= (number of all possible combinations), do not leave any combinations out. ( a. and e. are almost but not entirely fulfilled in the current impl )
2. Do a LMS on the n points.

Definition at line 23 of file LMSLinearizationPointFinder.h.

Constructor & Destructor Documentation

LMSLinearizationPointFinder::LMSLinearizationPointFinder

(

const signed int

n_pairs = 10

)

Definition at line 4 of file LMSLinearizationPointFinder.cc.

Referenced by clone().

                               :
  CrossingPtBasedLinearizationPointFinder ( LmsModeFinder3d(), n_pairs )
{ }

LMSLinearizationPointFinder::LMSLinearizationPointFinder	(	const RecTracksDistanceMatrix *	m,
		const signed int	n_pairs = -1
	)

Definition at line 9 of file LMSLinearizationPointFinder.cc.

                                                                  :
  CrossingPtBasedLinearizationPointFinder ( m , LmsModeFinder3d(), n_pairs )
{ }

Member Function Documentation

LMSLinearizationPointFinder * LMSLinearizationPointFinder::clone ( ) const

virtual

Clone method

Reimplemented from CrossingPtBasedLinearizationPointFinder.

Definition at line 14 of file LMSLinearizationPointFinder.cc.

References LMSLinearizationPointFinder().

{
  return new LMSLinearizationPointFinder ( * this );
}