marlintpc::simpleFitXY Class Reference

Simple fit in XY. More...

#include <SimpleHelixTrackModel.h>

Public Member Functions
	simpleFitXY (bool, double, double)
	Constructor for simple fit in XY. More...
void	addPoint (double, double, double)
	Add point. More...
void	addTrack (EVENT::Track const *)
	add a complete Track. More...
int	fit (double &, int &)
	Perform fit. More...
TVectorD	getPar () const
	Get parameters vector. More...
TMatrixDSym	getCov () const
	Get covariance matrix. More...

Private Attributes
const bool	_curved
	flag for curved (circle) track More...
const int	_npar
	number of track parameters (3: circle, 2: line) More...
const double	_xRef
	X of reference point. More...
const double	_yRef
	Y of reference point. More...
int	_numPoints
	number of points (hits) used More...
double	_sx
	weighted sum(x) More...
double	_sy
	weighted sum(y) More...
double	_sxx
	weighted sum(x*x) More...
double	_sxy
	weighted sum(x*y) More...
double	_syy
	weighted sum(y*y) More...
double	_sw
	sum of weights More...
double	_sr
	weighted sum(r*r) More...
double	_sxr
	weighted sum(x*r*r) More...
double	_syr
	weighted sum(y*r*r) More...
double	_srr
	weighted sum(r*r*r*r) More...
TVectorD	_parameters
	parameter vector More...
TMatrixDSym	_covariance
	covariance matrix More...

Detailed Description

Simple fit in XY.

Fit circle (Karimaki) or straight line.

Definition at line 120 of file SimpleHelixTrackModel.h.

Constructor & Destructor Documentation

simpleFitXY()

marlintpc::simpleFitXY::simpleFitXY	(	bool	flag,
		double	xr,
		double	yr
	)

Constructor for simple fit in XY.

Parameters

[in]	flag	curvature flag (true: circle, false: line)
[in]	xr	X of reference point
[in]	yr	Y of reference point

Definition at line 691 of file SimpleHelixTrackModel.cc.

References _numPoints, _sr, _srr, _sw, _sx, _sxr, _sxx, _sxy, _sy, _syr, and _syy.

Member Function Documentation

addPoint()

void marlintpc::simpleFitXY::addPoint	(	double	x,
		double	y,
		double	w
	)

Add point.

Parameters

[in]	x	X of point
[in]	y	Y of point
[in]	w	weight of point

Definition at line 704 of file SimpleHelixTrackModel.cc.

References _curved, _numPoints, _sr, _srr, _sw, _sx, _sxr, _sxx, _sxy, _sy, _syr, _syy, _xRef, and _yRef.

Referenced by marlintpc::pb_Seed::_fitSeed(), addTrack(), marlintpc::rb_Segment::fitSegment(), and marlintpc::tp_PixelSegment::tp_PixelSegment().

addTrack()

void marlintpc::simpleFitXY::addTrack

(

EVENT::Track const *

seedTrack

)

add a complete Track.

Parameters

[in]

seedTrack

input seed Track

Definition at line 727 of file SimpleHelixTrackModel.cc.

References addPoint().

fit()

int marlintpc::simpleFitXY::fit	(	double &	Chi2,
		int &	nPoints
	)

Perform fit.

Parameters

[out]	Chi2	chi2 of fit
[out]	nPoints	number of points

Returns

number of fit parameters (2 or 3)

Definition at line 741 of file SimpleHelixTrackModel.cc.

References _covariance, _curved, _npar, _numPoints, _parameters, _sr, _srr, _sw, _sx, _sxr, _sxx, _sxy, _sy, _syr, _syy, _xRef, and _yRef.

Referenced by marlintpc::pb_Seed::_fitSeed(), marlintpc::rb_Segment::fitSegment(), and marlintpc::tp_PixelSegment::tp_PixelSegment().

getCov()

TMatrixDSym marlintpc::simpleFitXY::getCov

(

)

const

Get covariance matrix.

Returns

covariance matrix

Definition at line 837 of file SimpleHelixTrackModel.cc.

References _covariance.

Referenced by marlintpc::rb_Segment::fitSegment(), and marlintpc::tp_PixelSegment::tp_PixelSegment().

getPar()

TVectorD marlintpc::simpleFitXY::getPar

(

)

const

Get parameters vector.

Returns

parameter vector

Definition at line 829 of file SimpleHelixTrackModel.cc.

References _parameters.

Referenced by marlintpc::pb_Seed::_fitSeed(), marlintpc::rb_Segment::fitSegment(), and marlintpc::tp_PixelSegment::tp_PixelSegment().

Member Data Documentation

_covariance

TMatrixDSym marlintpc::simpleFitXY::_covariance

private

covariance matrix

Definition at line 163 of file SimpleHelixTrackModel.h.

Referenced by fit(), and getCov().

_curved

const bool marlintpc::simpleFitXY::_curved

private

flag for curved (circle) track

Definition at line 131 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), and fit().

_npar

const int marlintpc::simpleFitXY::_npar

private

number of track parameters (3: circle, 2: line)

Definition at line 133 of file SimpleHelixTrackModel.h.

Referenced by fit().

_numPoints

int marlintpc::simpleFitXY::_numPoints

private

number of points (hits) used

Definition at line 139 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_parameters

TVectorD marlintpc::simpleFitXY::_parameters

private

parameter vector

Definition at line 161 of file SimpleHelixTrackModel.h.

Referenced by fit(), and getPar().

_sr

double marlintpc::simpleFitXY::_sr

private

weighted sum(r*r)

Definition at line 153 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_srr

double marlintpc::simpleFitXY::_srr

private

weighted sum(r*r*r*r)

Definition at line 159 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_sw

double marlintpc::simpleFitXY::_sw

private

sum of weights

Definition at line 151 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_sx

double marlintpc::simpleFitXY::_sx

private

weighted sum(x)

Definition at line 141 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_sxr

double marlintpc::simpleFitXY::_sxr

private

weighted sum(x*r*r)

Definition at line 155 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_sxx

double marlintpc::simpleFitXY::_sxx

private

weighted sum(x*x)

Definition at line 145 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_sxy

double marlintpc::simpleFitXY::_sxy

private

weighted sum(x*y)

Definition at line 147 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_sy

double marlintpc::simpleFitXY::_sy

private

weighted sum(y)

Definition at line 143 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_syr

double marlintpc::simpleFitXY::_syr

private

weighted sum(y*r*r)

Definition at line 157 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_syy

double marlintpc::simpleFitXY::_syy

private

weighted sum(y*y)

Definition at line 149 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), fit(), and simpleFitXY().

_xRef

const double marlintpc::simpleFitXY::_xRef

private

X of reference point.

Definition at line 135 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), and fit().

_yRef

const double marlintpc::simpleFitXY::_yRef

private

Y of reference point.

Definition at line 137 of file SimpleHelixTrackModel.h.

Referenced by addPoint(), and fit().

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

• SimpleHelixTrackModel.h
• SimpleHelixTrackModel.cc