marlintpc::simpleFitZS Class Reference

Simple fit in ZS. More...

#include <SimpleHelixTrackModel.h>

Public Member Functions
	simpleFitZS ()
	Constructor for simple fit in ZS. More...
void	addPoint (double, double, double)
	Add point. 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 int	_npar
	number of track parameters (2) More...
int	_numPoints
	number of points (hits) used More...
double	_sx
	weighted sum(s) More...
double	_sy
	weighted sum(z) More...
double	_sxx
	weighted sum(s*s) More...
double	_sxy
	weighted sum(s*z) More...
double	_syy
	weighted sum(z*z) More...
double	_sw
	sum of weights More...
TVectorD	_parameters
	parameter vector More...
TMatrixDSym	_covariance
	covariance matrix More...

Detailed Description

Simple fit in ZS.

Fit straight line.

Definition at line 170 of file SimpleHelixTrackModel.h.

Constructor & Destructor Documentation

simpleFitZS()

marlintpc::simpleFitZS::simpleFitZS

(

)

Constructor for simple fit in ZS.

Definition at line 842 of file SimpleHelixTrackModel.cc.

References _numPoints, _sw, _sx, _sxx, _sxy, _sy, and _syy.

Member Function Documentation

addPoint()

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

Add point.

Parameters

[in]	x	arc-length S of point
[in]	y	Z of point
[in]	w	weight of point

Definition at line 854 of file SimpleHelixTrackModel.cc.

References _numPoints, _sw, _sx, _sxx, _sxy, _sy, and _syy.

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

fit()

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

Perform fit.

Parameters

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

Returns

number of fit parameters (2)

Definition at line 871 of file SimpleHelixTrackModel.cc.

References _covariance, _npar, _numPoints, _parameters, _sw, _sx, _sxx, _sxy, _sy, and _syy.

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

getCov()

TMatrixDSym marlintpc::simpleFitZS::getCov

(

)

const

Get covariance matrix.

Returns

covariance matrix

Definition at line 905 of file SimpleHelixTrackModel.cc.

References _covariance.

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

getPar()

TVectorD marlintpc::simpleFitZS::getPar

(

)

const

Get parameters vector.

Returns

parameter vector

Definition at line 897 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::simpleFitZS::_covariance

private

covariance matrix

Definition at line 198 of file SimpleHelixTrackModel.h.

Referenced by fit(), and getCov().

_npar

const int marlintpc::simpleFitZS::_npar

private

number of track parameters (2)

Definition at line 180 of file SimpleHelixTrackModel.h.

Referenced by fit().

_numPoints

int marlintpc::simpleFitZS::_numPoints

private

number of points (hits) used

Definition at line 182 of file SimpleHelixTrackModel.h.

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

_parameters

TVectorD marlintpc::simpleFitZS::_parameters

private

parameter vector

Definition at line 196 of file SimpleHelixTrackModel.h.

Referenced by fit(), and getPar().

_sw

double marlintpc::simpleFitZS::_sw

private

sum of weights

Definition at line 194 of file SimpleHelixTrackModel.h.

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

_sx

double marlintpc::simpleFitZS::_sx

private

weighted sum(s)

Definition at line 184 of file SimpleHelixTrackModel.h.

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

_sxx

double marlintpc::simpleFitZS::_sxx

private

weighted sum(s*s)

Definition at line 188 of file SimpleHelixTrackModel.h.

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

_sxy

double marlintpc::simpleFitZS::_sxy

private

weighted sum(s*z)

Definition at line 190 of file SimpleHelixTrackModel.h.

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

_sy

double marlintpc::simpleFitZS::_sy

private

weighted sum(z)

Definition at line 186 of file SimpleHelixTrackModel.h.

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

_syy

double marlintpc::simpleFitZS::_syy

private

weighted sum(z*z)

Definition at line 192 of file SimpleHelixTrackModel.h.

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

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

• SimpleHelixTrackModel.h
• SimpleHelixTrackModel.cc