VertexFitter Class Reference

A class to determine the vertex. More...

#include <fun4all_coresoftware/blob/master/offline/packages/trackreco/VertexFitter.h>

Public Member Functions
	VertexFitter ()
virtual	~VertexFitter ()
bool	findVertex (std::vector< SimpleTrack3D > &tracks, std::vector< Eigen::Matrix< float, 5, 5 > > &covariances, std::vector< float > &vertex, float sigma, bool fix_xy=false)
bool	findVertex (std::vector< SimpleTrack3D > &tracks, std::vector< float > &vertex, float sigma, bool fix_xy=false)

Detailed Description

A class to determine the vertex.

This class incorporates Newton's method for gradient descent against an expo-dca^2 function.

Definition at line 18 of file VertexFitter.h.

View newest version in sPHENIX GitHub at line 18 of file VertexFitter.h

Constructor & Destructor Documentation

VertexFitter::VertexFitter

(

)

Definition at line 17 of file VertexFitter.cc.

View newest version in sPHENIX GitHub at line 17 of file VertexFitter.cc

virtual VertexFitter::~VertexFitter ( )

inlinevirtual

Definition at line 21 of file VertexFitter.h.

View newest version in sPHENIX GitHub at line 21 of file VertexFitter.h

Member Function Documentation

bool VertexFitter::findVertex	(	std::vector< SimpleTrack3D > &	tracks,
		std::vector< Eigen::Matrix< float, 5, 5 > > &	covariances,
		std::vector< float > &	vertex,
		float	sigma,
		bool	fix_xy = false
	)

Referenced by PHInitZVertexing::fit_vertex(), and PHPatternReco::fit_vertex().

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bool VertexFitter::findVertex	(	std::vector< SimpleTrack3D > &	tracks,
		std::vector< float > &	vertex,
		float	sigma,
		bool	fix_xy = false
	)

The method will find the vertex given an initial guess and a list of track candidates.

Parameters

[in]	tracks	List of track candidates
[in,out]	vertex	The vertex position in x,y,z

Returns

true if successful

Definition at line 30 of file VertexFitter.cc.

View newest version in sPHENIX GitHub at line 30 of file VertexFitter.cc

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

• fun4all_coresoftware/blob/master/offline/packages/trackreco/VertexFitter.h
• fun4all_coresoftware/blob/master/offline/packages/trackreco/VertexFitter.cc