CbmRichRingFitterEllipseMinuit Class Reference

This is the implementation of ellipse fitting using MINUIT. More...

#include <CbmRichRingFitterEllipseMinuit.h>

Inheritance diagram for CbmRichRingFitterEllipseMinuit:

Collaboration diagram for CbmRichRingFitterEllipseMinuit:

Public Member Functions
	CbmRichRingFitterEllipseMinuit ()
	Default constructor. More...
virtual	~CbmRichRingFitterEllipseMinuit ()
	Standard destructor. More...
virtual void	DoFit (CbmRichRingLight *ring)
	Inherited from CbmRichRingFitterBase. More...

Protected Member Functions
virtual void	CalcChi2 (CbmRichRingLight *ring)
	Calculate chi2 of the ellipse fit. More...
virtual void	CalcChi2 (double A, double B, double C, double D, double E, double F, CbmRichRingLight *ring)
	Calculate chi2 of the ellipse fitting using parameters of 2D curve. More...

Static Protected Attributes
static const int	MAX_NOF_HITS_IN_RING

Private Member Functions
vector< double >	DoFit (const vector< double > &x, const vector< double > &y)
	Execute ring fitting algorithm. More...
void	TransformToRichRing (CbmRichRingLight *ring, const vector< double > &par)
	Transform obtained parameters from MINUIT to CbmRichRingLight. More...

Detailed Description

This is the implementation of ellipse fitting using MINUIT.

Author

Semen Lebedev s.leb.nosp@m.edev.nosp@m.@gsi..nosp@m.de

Date

2011

Definition at line 62 of file CbmRichRingFitterEllipseMinuit.h.

Constructor & Destructor Documentation

CbmRichRingFitterEllipseMinuit()

CbmRichRingFitterEllipseMinuit::CbmRichRingFitterEllipseMinuit

(

)

Default constructor.

Definition at line 17 of file CbmRichRingFitterEllipseMinuit.cxx.

~CbmRichRingFitterEllipseMinuit()

CbmRichRingFitterEllipseMinuit::~CbmRichRingFitterEllipseMinuit ( )

virtual

Standard destructor.

Definition at line 19 of file CbmRichRingFitterEllipseMinuit.cxx.

Member Function Documentation

CalcChi2() [1/2]

virtual void CbmRichRingFitterEllipseBase::CalcChi2 ( CbmRichRingLight *  ring )

inlineprotectedvirtualinherited

Calculate chi2 of the ellipse fit.

Parameters

[in,out]

ring

Fitted RICH ring with ellipse fitter.

Reimplemented from CbmRichRingFitterBase.

Definition at line 42 of file CbmRichRingFitterEllipseBase.h.

References CbmRichHitLight::fX, CbmRichHitLight::fY, CbmRichRingLight::GetAaxis(), CbmRichRingLight::GetBaxis(), CbmRichRingLight::GetHit(), CbmRichRingLight::GetNofHits(), CbmRichRingLight::GetXF1(), CbmRichRingLight::GetXF2(), CbmRichRingLight::GetYF1(), CbmRichRingLight::GetYF2(), CbmRichRingLight::SetChi2(), sqrt(), x, and y.

Referenced by CbmRichRingFitterEllipseTau::DoFit(), DoFit(), and CbmRichRingFitterEllipseTau::TransformEllipse().

CalcChi2() [2/2]

virtual void CbmRichRingFitterEllipseBase::CalcChi2 ( double  A, double  B, double  C, double  D, double  E, double  F, CbmRichRingLight *  ring  )

inlineprotectedvirtualinherited

Calculate chi2 of the ellipse fitting using parameters of 2D curve.

Parameters

[in]	A	A parameter of curve.
[in]	B	B parameter of curve.
[in]	C	C parameter of curve.
[in]	D	D parameter of curve.
[in]	E	E parameter of curve.
[in]	F	F parameter of curve.
[in]	ring	Fitted RICH ring with ellipse fitter.

Definition at line 87 of file CbmRichRingFitterEllipseBase.h.

References fabs(), CbmRichHitLight::fX, CbmRichHitLight::fY, CbmRichRingLight::GetHit(), CbmRichRingLight::GetNofHits(), CbmRichRingLight::SetChi2(), sqrt(), x, and y.

DoFit() [1/2]

void CbmRichRingFitterEllipseMinuit::DoFit ( CbmRichRingLight *  ring )

virtual

Inherited from CbmRichRingFitterBase.

Implements CbmRichRingFitterBase.

Definition at line 21 of file CbmRichRingFitterEllipseMinuit.cxx.

References CbmRichRingFitterEllipseBase::CalcChi2(), CbmRichHitLight::fX, CbmRichHitLight::fY, CbmRichRingLight::GetHit(), CbmRichRingLight::GetNofHits(), i, CbmRichRingLight::SetRadius(), CbmRichRingLight::SetXYABP(), and TransformToRichRing().

DoFit() [2/2]

vector< double > CbmRichRingFitterEllipseMinuit::DoFit ( const vector< double > &  x, const vector< double > &  y  )

private

Execute ring fitting algorithm.

Parameters

[in]	x	X coordinates of hits.
[in]	y	Y coordinates of hit.

Returns

Vector of fitted parameters.

Definition at line 83 of file CbmRichRingFitterEllipseMinuit.cxx.

References i, min(), x, and y.

TransformToRichRing()

void CbmRichRingFitterEllipseMinuit::TransformToRichRing ( CbmRichRingLight *  ring, const vector< double > &  par  )

private

Transform obtained parameters from MINUIT to CbmRichRingLight.

Parameters

[out]	ring	Pointer to the RICH ring.
[in]	par	Parameters obtained from MINUIT.

Definition at line 46 of file CbmRichRingFitterEllipseMinuit.cxx.

References CbmRichRingLight::SetRadius(), CbmRichRingLight::SetXYABP(), and sqrt().

Referenced by DoFit().

Member Data Documentation

MAX_NOF_HITS_IN_RING

const int CbmRichRingFitterBase::MAX_NOF_HITS_IN_RING

staticprotectedinherited

Initial value:

=
    400

Definition at line 70 of file CbmRichRingFitterBase.h.

Referenced by CbmRichRingFitterEllipseTau::DoFit().

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

• CbmRichRingFitterEllipseMinuit.h
• CbmRichRingFitterEllipseMinuit.cxx