AliTPCkalmanFit Class Reference

#include <AliTPCkalmanFit.h>

Inheritance diagram for AliTPCkalmanFit:

Public Member Functions
	AliTPCkalmanFit ()
void	Init ()
void	InitTransformation ()
void	Add (const AliTPCkalmanFit *kalman)
void	AddCalibration (AliTPCTransformation *calib)
AliTPCTransformation *	GetTransformation (Int_t i)
Int_t	GetTransformationIndex (const char *trName)
void	SetStatus (const char *name, Bool_t setOn, Bool_t isOr=kTRUE)
void	FitTrackLinear (AliTrackPointArray &points, TTreeSRedirector *debug=0, Float_t scalingRMSY=1., Float_t scalingRMSZ=1.)
void	DumpTrackLinear (AliTrackPointArray &points, TTreeSRedirector *debug)
void	UpdateLinear (AliTrackPoint &point, TTreeSRedirector *debug=0)
void	Propagate (TTreeSRedirector *debug=0)
void	PropagateTime (Int_t time)
void	AddCovariance (const char *varName, Double_t sigma)
void	Update (const AliTPCkalmanFit *kalman)
void	ApplyCalibration (AliTrackPointArray *array, Double_t csign)
Bool_t	CheckCovariance (TMatrixD &covar, Float_t maxEl)
Bool_t	DumpCorelation (Double_t threshold, const char *mask0=0, const char *mask1=0)
Bool_t	DumpCalib (const char *mask=0, Float_t correlationCut=-1)
Double_t	GetTPCDeltaXYZ (Int_t coord, Int_t volID, Int_t icoordsys, Double_t x, Double_t y, Double_t z)
Double_t	GetTPCtransXYZ (Int_t coord, Int_t volID, Int_t calibID, Int_t icoordsys, Double_t x, Double_t y, Double_t z)
void	MakeTreeTrans (TTreeSRedirector *debug, const char *treeName="all")
AliTPCkalmanFit *	Test (Int_t ntracks)
void	SetInstance (AliTPCkalmanFit *param)

Static Public Member Functions
static AliTrackPointArray *	SortPoints (AliTrackPointArray &points)
static AliTrackPointArray *	MakePointArrayLinear (Double_t alpha, Double_t y0, Double_t z0, Double_t ky, Double_t kz, Double_t err=0.02)
static Double_t	SGetTPCDeltaXYZ (Int_t coord, Int_t volID, Int_t icoordsys, Double_t x, Double_t y, Double_t z)
static Double_t	SGetTPCtransXYZ (Int_t coord, Int_t volID, Int_t calibID, Int_t icoordsys, Double_t x, Double_t y, Double_t z)

Public Attributes
TObjArray *	fCalibration
	array of calibrations More...
TMatrixD *	fCalibParam
	calibration parameters More...
TMatrixD *	fCalibCovar
	calibration parameters More...
TMatrixD *	fLinearParam
	linear parameters More...
TMatrixD *	fLinearCovar
	linear covariance More...
THnSparse *	fLinearTrackDelta [12]
	linear tracks matching residuals - delta More...
THnSparse *	fLinearTrackPull [12]
	linear tracks matching residuals - pull More...
Int_t	fLastTimeStamp
	last time stamp - used for propagation of parameters More...

Static Public Attributes
static AliTPCkalmanFit *	fgInstance = 0
	! Instance of this class (singleton implementation) More...

Private Member Functions
AliTPCkalmanFit &	operator= (const AliTPCkalmanFit &)
	AliTPCkalmanFit (const AliTPCkalmanFit &)
	ClassDef (AliTPCkalmanFit, 3)

Private Attributes
Double_t	fCurrentAlpha
	! current rotation frame More...
Double_t	fCA
	! cosine of current angle More...
Double_t	fSA
	! sinus of current angle More...

Detailed Description

AliTPCkalmanFit:

Kalman filter(s) for fitting of the tracks together with calibration/transformation parameters.

Correction/Transformation are currently described by set (TObjArray) of primitive correction/transformatio - AliTPCTransformation. Currently we assume that transformation comute (in first order). AliTPCTransformation describe general non linear transformation.

Current calibration parameters and covariance stored (fCalibParam, fCalibCovar).

Currenly only linear track model implemented. Fits to be implemented: 0. Plane fitting (Laser CE)

1. Primary vertex fitting.
2. Propagation in magnetic field and fit of planes

How to use it - see AliTPCkalmanFit::Test function

Simple test (see AliTPCkalmanFit::Test)

AliTPCTransformation::BuildBasicFormulas();
AliTPCkalmanFit *kalmanFit0 = AliTPCkalmanFit::Test(2000);
TFile f("kalmanfitTest.root");

Transformation visualization: Transforamtion can be visualized using TFn (TF1,TF2 ...) and using tree->Draw()

kalmanFit0->SetInstance(kalmanFit0);
kalmanFit0->InitTransformation();

TF2 fxRZdz("fxRZdz","sign(y)*1000*(AliTPCkalmanFit::SGetTPCDeltaXYZ(0,-1,0,x,0,y)-AliTPCkalmanFit::SGetTPCDeltaXYZ(0,-1,0,x,0,y-1))",85,245,-250,250);
fxRZdz->Draw("");

TF2 fxRZ("fxRZ","sign(y)*10*(AliTPCkalmanFit::SGetTPCDeltaXYZ(0,-1,x,0,y))",85,245,-250,250);
fxRZ->Draw("");

Author

Marian Ivanov maria.nosp@m.n.iv.nosp@m.anov@.nosp@m.cern.nosp@m..ch

Definition at line 18 of file AliTPCkalmanFit.h.

Constructor & Destructor Documentation

AliTPCkalmanFit::AliTPCkalmanFit

(

)

Default constructor

Definition at line 69 of file AliTPCkalmanFit.cxx.

Referenced by Test().

AliTPCkalmanFit::AliTPCkalmanFit ( const AliTPCkalmanFit &  )

inlineprivate

Definition at line 84 of file AliTPCkalmanFit.h.

Member Function Documentation

void AliTPCkalmanFit::Add

(

const AliTPCkalmanFit *

kalman

)

Definition at line 99 of file AliTPCkalmanFit.cxx.

Referenced by MakeFolders().

void AliTPCkalmanFit::AddCalibration

(

AliTPCTransformation *

calib

)

Add calibration

Definition at line 802 of file AliTPCkalmanFit.cxx.

Referenced by AddAlignOROCIROCFourier(), AddAlignSectorFourier(), AddDrift(), AddFitFieldCage(), AddLocalXYMisalignment(), AddLocalXYMisalignmentSector(), AddPhiScaling(), AddZShift(), AddZTilting(), and Test().

void AliTPCkalmanFit::AddCovariance	(	const char *	varName,
		Double_t	sigma
	)

Definition at line 595 of file AliTPCkalmanFit.cxx.

void AliTPCkalmanFit::ApplyCalibration	(	AliTrackPointArray *	array,
		Double_t	csign
	)

Definition at line 828 of file AliTPCkalmanFit.cxx.

Referenced by DumpTrackLinear(), FitPointsLinear(), QAPointsLinear(), and Test().

Bool_t AliTPCkalmanFit::CheckCovariance	(	TMatrixD &	covar,
		Float_t	maxEl
	)

Check consistency of covariance matrix

• symetrize coavariance matrix

Definition at line 919 of file AliTPCkalmanFit.cxx.

Referenced by UpdateLinear().

AliTPCkalmanFit::ClassDef ( AliTPCkalmanFit  , 3    )

private

Bool_t AliTPCkalmanFit::DumpCalib	(	const char *	mask = 0,
		Float_t	correlationCut = -1
	)

Print calibration entries - name, value, error

Definition at line 884 of file AliTPCkalmanFit.cxx.

Referenced by CalibAlignKalman().

Bool_t AliTPCkalmanFit::DumpCorelation	(	Double_t	threshold,
		const char *	mask0 = 0,
		const char *	mask1 = 0
	)

Definition at line 851 of file AliTPCkalmanFit.cxx.

void AliTPCkalmanFit::DumpTrackLinear	(	AliTrackPointArray &	points,
		TTreeSRedirector *	debug
	)

Dump the track parameters before and after current calibration

Track is divided to two parts - X mean is defined as middle point

Definition at line 381 of file AliTPCkalmanFit.cxx.

Referenced by FitPointsLinear(), QAPointsLinear(), and Test().

void AliTPCkalmanFit::FitTrackLinear	(	AliTrackPointArray &	points,
		TTreeSRedirector *	debug = 0,
		Float_t	scalingRMSY = 1.,
		Float_t	scalingRMSZ = 1.
	)

Definition at line 259 of file AliTPCkalmanFit.cxx.

Referenced by FitPointsLinear(), and Test().

Double_t AliTPCkalmanFit::GetTPCDeltaXYZ	(	Int_t	coord,
		Int_t	volID,
		Int_t	icoordsys,
		Double_t	x,
		Double_t	y,
		Double_t	z
	)

function for visualization purposes

coord - coordinate for output

• 0 -X 1 -Y 2 -Z 3 -R 4 -RPhi 5 -Z

icoordsys - type of coordinate system for input

• 0 - x,y,z
• 1 - r,phi,z

Definition at line 1089 of file AliTPCkalmanFit.cxx.

Referenced by MakeTreeTrans(), and SGetTPCDeltaXYZ().

Double_t AliTPCkalmanFit::GetTPCtransXYZ	(	Int_t	coord,
		Int_t	volID,
		Int_t	calibID,
		Int_t	icoordsys,
		Double_t	x,
		Double_t	y,
		Double_t	z
	)

Definition at line 1149 of file AliTPCkalmanFit.cxx.

Referenced by MakeTreeTrans(), and SGetTPCtransXYZ().

AliTPCTransformation* AliTPCkalmanFit::GetTransformation ( Int_t  i )

inline

Definition at line 26 of file AliTPCkalmanFit.h.

Referenced by DumpCalib(), and DumpCorelation().

Int_t AliTPCkalmanFit::GetTransformationIndex

(

const char *

trName

)

Definition at line 809 of file AliTPCkalmanFit.cxx.

void AliTPCkalmanFit::Init

(

)

Initialize parameter vector and covariance matrix To be called after initialization of all of the transformations

Definition at line 115 of file AliTPCkalmanFit.cxx.

Referenced by CalibAlignKalmanFit(), SetupFit(), and Test().

void AliTPCkalmanFit::InitTransformation

(

)

Initialize pointers to the transforamtion functions

Definition at line 89 of file AliTPCkalmanFit.cxx.

Referenced by CalibAlignKalman().

AliTrackPointArray * AliTPCkalmanFit::MakePointArrayLinear ( Double_t  alpha, Double_t  y0, Double_t  z0, Double_t  ky, Double_t  kz, Double_t  err = 0.02  )

static

< dummy covariance

Definition at line 757 of file AliTPCkalmanFit.cxx.

Referenced by Test().

void AliTPCkalmanFit::MakeTreeTrans	(	TTreeSRedirector *	debug,
		const char *	treeName = "all"
	)

Make the Tree before and after current calibration

Definition at line 1190 of file AliTPCkalmanFit.cxx.

AliTPCkalmanFit& AliTPCkalmanFit::operator= ( const AliTPCkalmanFit &  )

private

void AliTPCkalmanFit::Propagate

(

TTreeSRedirector *

debug = 0

)

Propagate the Kalman

Definition at line 590 of file AliTPCkalmanFit.cxx.

void AliTPCkalmanFit::PropagateTime

(

Int_t

time

)

Propagate the calibration in time

• Increase covariance matrix

Definition at line 612 of file AliTPCkalmanFit.cxx.

Referenced by FitPointsLinear().

void AliTPCkalmanFit::SetInstance ( AliTPCkalmanFit *  param )

inline

Definition at line 77 of file AliTPCkalmanFit.h.

void AliTPCkalmanFit::SetStatus	(	const char *	name,
		Bool_t	setOn,
		Bool_t	isOr = kTRUE
	)

0. To activate all transforamtion call SetStatus(0,kTRUE)

1. To disable everything SetStatus(0,kFALSE)
2. To activate/desactivate SetStatus("xxx",kTRUE/kFALSE,kFALSE)

Definition at line 196 of file AliTPCkalmanFit.cxx.

Double_t AliTPCkalmanFit::SGetTPCDeltaXYZ ( Int_t  coord, Int_t  volID, Int_t  icoordsys, Double_t  x, Double_t  y, Double_t  z  )

static

Definition at line 1138 of file AliTPCkalmanFit.cxx.

Double_t AliTPCkalmanFit::SGetTPCtransXYZ ( Int_t  coord, Int_t  volID, Int_t  calibID, Int_t  icoordsys, Double_t  x, Double_t  y, Double_t  z  )

static

Definition at line 1182 of file AliTPCkalmanFit.cxx.

AliTrackPointArray * AliTPCkalmanFit::SortPoints ( AliTrackPointArray &  points )

static

Creates the array - points sorted according radius - neccessay for kalman fit

0. choose the frame - rotation angle

Definition at line 725 of file AliTPCkalmanFit.cxx.

Referenced by FitPointsLinear(), and TestScattering().

AliTPCkalmanFit * AliTPCkalmanFit::Test

(

Int_t

ntracks

)

This is test example

< generate random parameters

< backup

Definition at line 964 of file AliTPCkalmanFit.cxx.

void AliTPCkalmanFit::Update

(

const AliTPCkalmanFit *

kalman

)

Update Kalman filter

< X vector

< X covariance

< vector to mesurement

< Innovation or measurement residual

< helper matrix Hk transpose

< Innovation (or residual) covariance

< Optimal Kalman gain

< helper matrix

< helper matrix

Definition at line 221 of file AliTPCkalmanFit.cxx.

Referenced by Add().

void AliTPCkalmanFit::UpdateLinear	(	AliTrackPoint &	point,
		TTreeSRedirector *	debug = 0
	)

Update Kalman

< X vector

< X covariance

< vector to mesurement

< Innovation or measurement residual

< Innovation or measurement residual

< helper matrix Hk transpose

< Innovation (or residual) covariance

< Optimal Kalman gain

< helper matrix

< helper matrix

Definition at line 629 of file AliTPCkalmanFit.cxx.

Referenced by FitTrackLinear().

Member Data Documentation

Double_t AliTPCkalmanFit::fCA

private

! cosine of current angle

Definition at line 81 of file AliTPCkalmanFit.h.

Referenced by DumpTrackLinear(), FitTrackLinear(), and UpdateLinear().

TMatrixD* AliTPCkalmanFit::fCalibCovar

calibration parameters

Definition at line 64 of file AliTPCkalmanFit.h.

Referenced by AddCovariance(), DumpCalib(), DumpCorelation(), FitTrackLinear(), Init(), PropagateTime(), Test(), and Update().

TMatrixD* AliTPCkalmanFit::fCalibParam

calibration parameters

Definition at line 63 of file AliTPCkalmanFit.h.

Referenced by DumpTrackLinear(), FitTrackLinear(), Init(), MakeTreeTrans(), Test(), and Update().

TObjArray* AliTPCkalmanFit::fCalibration

array of calibrations

Definition at line 62 of file AliTPCkalmanFit.h.

Referenced by AddCalibration(), AddCovariance(), ApplyCalibration(), FitTrackLinear(), GetTPCDeltaXYZ(), GetTPCtransXYZ(), GetTransformation(), GetTransformationIndex(), Init(), InitTransformation(), MakeTreeTrans(), PropagateTime(), SetStatus(), Test(), Update(), and UpdateLinear().

Double_t AliTPCkalmanFit::fCurrentAlpha

private

! current rotation frame

Definition at line 80 of file AliTPCkalmanFit.h.

Referenced by DumpTrackLinear(), and FitTrackLinear().

AliTPCkalmanFit * AliTPCkalmanFit::fgInstance = 0

static

! Instance of this class (singleton implementation)

Definition at line 78 of file AliTPCkalmanFit.h.

Referenced by SetInstance(), SGetTPCDeltaXYZ(), and SGetTPCtransXYZ().

Int_t AliTPCkalmanFit::fLastTimeStamp

last time stamp - used for propagation of parameters

Definition at line 75 of file AliTPCkalmanFit.h.

Referenced by PropagateTime().

TMatrixD* AliTPCkalmanFit::fLinearCovar

linear covariance

Definition at line 69 of file AliTPCkalmanFit.h.

Referenced by FitTrackLinear(), and UpdateLinear().

TMatrixD* AliTPCkalmanFit::fLinearParam

linear parameters

Definition at line 68 of file AliTPCkalmanFit.h.

Referenced by FitTrackLinear(), and UpdateLinear().

THnSparse* AliTPCkalmanFit::fLinearTrackDelta[12]

linear tracks matching residuals - delta

Definition at line 70 of file AliTPCkalmanFit.h.

Referenced by Add(), DumpQA1D(), DumpTrackLinear(), Init(), MakeFolders(), SelectNonPixelA(), SelectNonPixelC(), and SelectPixel().

THnSparse* AliTPCkalmanFit::fLinearTrackPull[12]

linear tracks matching residuals - pull

Definition at line 71 of file AliTPCkalmanFit.h.

Referenced by Add(), DumpTrackLinear(), and Init().

Double_t AliTPCkalmanFit::fSA

private

! sinus of current angle

Definition at line 82 of file AliTPCkalmanFit.h.

Referenced by DumpTrackLinear(), FitTrackLinear(), and UpdateLinear().

---

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

• TPC/Attic/AliTPCkalmanFit.h
• TPC/Attic/AliTPCkalmanFit.cxx