#include <AliFMDEnergyFitter.h>

Inheritance diagram for AliFMDEnergyFitter::RingHistos:

Public Types
typedef AliFMDCorrELossFit::ELossFit	ELossFit_t

Public Member Functions
	RingHistos ()

	RingHistos (UShort_t d, Char_t r)

	RingHistos (const RingHistos &o)

RingHistos &	operator= (const RingHistos &o)

	~RingHistos ()

virtual TArrayD	MakeIncreasingAxis (Int_t n, Double_t min, Double_t max) const

TH2 *	Make (const char name, const char title, const TAxis &eAxis, Double_t deMax=12, Int_t nDeBins=300, Bool_t incr=true)

virtual void	CreateOutputObjects (TList *dir)

virtual void	SetupForData (const TAxis &eAxis, const TAxis &cAxis, Double_t maxDE=10, Int_t nDEbins=300, Bool_t useIncrBin=true)

virtual void	Fill (Bool_t empty, Double_t eta, Int_t icent, Double_t mult)

virtual TObjArray *	Fit (TList *dir, Double_t lowCut, UShort_t nParticles, UShort_t minEntries, UShort_t minusBins, Double_t relErrorCut, Double_t chi2nuCut, Double_t minWeight, Double_t regCut, EResidualMethod residuals) const

virtual TObjArray *	FitSlices (TList dir, const char name, Double_t lowCut, UShort_t nParticles, UShort_t minEntries, UShort_t minusBins, Double_t relErrorCut, Double_t chi2nuCut, Double_t minWeight, Double_t regCut, EResidualMethod residuals, Bool_t scaleToPeak=true, TObjArray *best=0) const

virtual void	Scale (TH1 *dist) const

virtual ELossFit_t *	FitHist (TH1 *dist, Double_t lowCut, UShort_t nParticles, UShort_t minEntries, UShort_t minusBins, Double_t relErrorCut, Double_t chi2nuCut, Double_t minWeight, Double_t regCut, Bool_t scaleToPeak, UShort_t &status) const

virtual ELossFit_t *	FindBestFit (const TH1 *dist, Double_t relErrorCut, Double_t chi2nuCut, Double_t minWeightCut) const

virtual void	CalculateResiduals (EResidualMethod mode, Double_t lowCut, TH1 dist, ELossFit_t fit, TCollection *out) const

virtual void	FindBestFits (const TList *d, AliFMDCorrELossFit &obj, const TAxis &eta)

TH1 *	MakePar (const char name, const char title, const TAxis &eta) const

TH1 *	MakeTotal (const char name, const char title, const TAxis &eta, Int_t low, Int_t high, Double_t val, Double_t err) const

	ClassDef (RingHistos, 4)

Public Member Functions inherited from AliForwardUtil::RingHistos
	RingHistos ()

	RingHistos (UShort_t d, Char_t r)

	RingHistos (const RingHistos &o)

RingHistos &	operator= (const RingHistos &o)

TList *	DefineOutputList (TList *d) const

TList *	GetOutputList (const TList *d) const

TH1 *	GetOutputHist (const TList d, const char name) const

Color_t	Color () const

const char *	GetName () const

const UShort_t &	NSector () const

const UShort_t &	NStrip () const

	ClassDef (RingHistos, 1)

Public Attributes
TH1 *	fEDist

TH1 *	fEmpty

TH2 *	fHist

TList *	fList

TObjArray	fBest

TClonesArray	fFits

Int_t	fDebug

Public Attributes inherited from AliForwardUtil::RingHistos
UShort_t	fDet

Char_t	fRing

TString	fName

UShort_t	fkNSector

UShort_t	fkNStrip

Detailed Description

Internal data structure to keep track of the histograms. Objects of this class are streamed, as we create the objects at task initialization time. We must therefore create a dictionary for this class. This does not mean that one should actually use this class outside of this (or a derived) class.

Definition at line 377 of file AliFMDEnergyFitter.h.

Member Typedef Documentation

typedef AliFMDCorrELossFit::ELossFit AliFMDEnergyFitter::RingHistos::ELossFit_t

Definition at line 379 of file AliFMDEnergyFitter.h.

Constructor & Destructor Documentation

AliFMDEnergyFitter::RingHistos::RingHistos ( )

Default CTOR

Definition at line 597 of file AliFMDEnergyFitter.cxx.

AliFMDEnergyFitter::RingHistos::RingHistos	(	UShort_t	d,
		Char_t	r
	)

Constructor

Parameters

d	detector
r	ring

Definition at line 616 of file AliFMDEnergyFitter.cxx.

AliFMDEnergyFitter::RingHistos::RingHistos ( const RingHistos & o )

inline

Copy constructor - not defined

Parameters

o	Object to copy from

Definition at line 396 of file AliFMDEnergyFitter.h.

AliFMDEnergyFitter::RingHistos::~RingHistos ( )

virtual

Destructor

Reimplemented from AliForwardUtil::RingHistos.

Reimplemented in AliFMDMCHitEnergyFitter::RingHistos, and AliFMDMCTrackInspector::RingHistos.

Definition at line 639 of file AliFMDEnergyFitter.cxx.

Member Function Documentation

void AliFMDEnergyFitter::RingHistos::CalculateResiduals	(	EResidualMethod	mode,
		Double_t	lowCut,
		TH1 *	dist,
		ELossFit_t *	fit,
		TCollection *	out
	)		const

virtual

Calculate residuals of the fit

Parameters

mode	How to calculate
lowCut	Lower cut
dist	Distribution
fit	Function fitted to distribution
out	Output list to store residual histogram in

Definition at line 1412 of file AliFMDEnergyFitter.cxx.

AliFMDEnergyFitter::RingHistos::ClassDef	(	RingHistos	,
		4
	)

void AliFMDEnergyFitter::RingHistos::CreateOutputObjects ( TList * dir )

virtual

Define outputs

Parameters

dir

Definition at line 749 of file AliFMDEnergyFitter.cxx.

Referenced by AliFMDEnergyFitter::CreateOutputObjects().

void AliFMDEnergyFitter::RingHistos::Fill	(	Bool_t	empty,
		Double_t	eta,
		Int_t	icent,
		Double_t	mult
	)

virtual

Fill histogram

Parameters

empty	True if event is empty
eta	\( Eta\)
icent	Centrality bin (1 based)
mult	Signal

Definition at line 812 of file AliFMDEnergyFitter.cxx.

Referenced by AliFMDEnergyFitter::Accumulate().

AliFMDEnergyFitter::RingHistos::ELossFit_t * AliFMDEnergyFitter::RingHistos::FindBestFit	(	const TH1 *	dist,
		Double_t	relErrorCut,
		Double_t	chi2nuCut,
		Double_t	minWeightCut
	)		const

virtual

Find the best fit

Parameters

dist	Histogram
relErrorCut	Cut applied to relative error of parameter. Note, for multi-particle weights, the cut is loosend by a factor of 2
chi2nuCut	Cut on \( \chi^2/\nu\) - the reduced \(\chi^2\)
minWeightCut	Least valid \( a_i\)

Returns: Best fit

Definition at line 1348 of file AliFMDEnergyFitter.cxx.

void AliFMDEnergyFitter::RingHistos::FindBestFits	(	const TList *	d,
		AliFMDCorrELossFit &	obj,
		const TAxis &	eta
	)

virtual

Find the best fits. This assumes that the array fBest has been filled with the best possible fits for each eta bin, and that the fits are placed according to the bin number of the eta bin.

This is called by the parent class when generating the corretion object.

Parameters

d	Parent list
obj	Object to add fits to
eta	Eta axis

Definition at line 1483 of file AliFMDEnergyFitter.cxx.

Referenced by AliFMDEnergyFitter::MakeCorrectionsObject().

TObjArray * AliFMDEnergyFitter::RingHistos::Fit	(	TList *	dir,
		Double_t	lowCut,
		UShort_t	nParticles,
		UShort_t	minEntries,
		UShort_t	minusBins,
		Double_t	relErrorCut,
		Double_t	chi2nuCut,
		Double_t	minWeight,
		Double_t	regCut,
		EResidualMethod	residuals
	)		const

virtual

Get the the 2D histogram eloss name from our sub-list of dir and call the Fit function described below (with &fBest) as last argument.

Parameters

dir	Output list
lowCut	Lower cut
nParticles	Max number of convolved landaus to fit
minEntries	Minimum number of entries
minusBins	Number of bins from peak to subtract to get the fit range
relErrorCut	Cut applied to relative error of parameter. Note, for multi-particle weights, the cut is loosend by a factor of 2
chi2nuCut	Cut on \( \chi^2/\nu\) - the reduced \(\chi^2\)
minWeight	Least weight ot consider
regCut	Regularization cut-off
residuals	Mode for residual plots

Returns: List of fit parameters

Reimplemented in AliFMDMCTrackInspector::RingHistos, and AliFMDMCHitEnergyFitter::RingHistos.

Definition at line 928 of file AliFMDEnergyFitter.cxx.

Referenced by AliFMDEnergyFitter::Fit().

AliFMDEnergyFitter::RingHistos::ELossFit_t * AliFMDEnergyFitter::RingHistos::FitHist	(	TH1 *	dist,
		Double_t	lowCut,
		UShort_t	nParticles,
		UShort_t	minEntries,
		UShort_t	minusBins,
		Double_t	relErrorCut,
		Double_t	chi2nuCut,
		Double_t	minWeight,
		Double_t	regCut,
		Bool_t	scaleToPeak,
		UShort_t &	status
	)		const

virtual

Fit a signal histogram. First, the bin \( b_{min}\) with maximum bin content in the range \( [E_{min},\infty]\) is found. Then the fit range is set to the bin range \( [b_{min}-\Delta b,b_{min}+2\Delta b]\), and a 1 particle signal is fitted to that. The parameters of that fit is then used as seeds for a fit of the \( N\) particle response to the data in the range \( [b_{min}-\Delta b,N(\Delta_1+\xi_1\log(N))+2N\xi\)

Parameters

dist	Histogram to fit
lowCut	Lower cut \( E_{min}\) on signal
minEntries	Least number of entries required
nParticles	Max number \( N\) of convolved landaus to fit
minusBins	Number of bins \( \Delta b\) from peak to subtract to get the fit range
relErrorCut	Cut applied to relative error of parameter. Note, for multi-particle weights, the cut is loosend by a factor of 2
chi2nuCut	Cut on \( \chi^2/\nu\) - the reduced \(\chi^2\)
minWeight	Least weight ot consider
regCut	Regularization cut-off
scaleToPeak	If true, scale distribution to peak value
status	On return, contain the status code (0: OK, 1: empty, 2: low statistics, 3: fit failed)

Returns: The best fit function

Definition at line 1220 of file AliFMDEnergyFitter.cxx.

TObjArray * AliFMDEnergyFitter::RingHistos::FitSlices	(	TList *	dir,
		const char *	name,
		Double_t	lowCut,
		UShort_t	nParticles,
		UShort_t	minEntries,
		UShort_t	minusBins,
		Double_t	relErrorCut,
		Double_t	chi2nuCut,
		Double_t	minWeight,
		Double_t	regCut,
		EResidualMethod	residuals,
		Bool_t	scaleToPeak = `true`,
		TObjArray *	best = `0`
	)		const

virtual

Get the the 2D histogram name from our sub-list of dir. Then for each eta slice, try to fit the energu loss distribution up to nParticles particle responses.

The fitted distributions (along with the functions fitted) are stored in a newly created sublist (nameDists).

The fit parameters are also recorded in the newly created sub-list nameResults.

If residuals is not equal to kNoResiduals, then the residuals of the fits will be stored in the newly created sub-list nameResiduals.

A histogram named nameStatus is also generated and stored in the output list.

Parameters

dir	Output list
name	Name of 2D base histogram in list
lowCut	Lower cut
nParticles	Max number of convolved landaus to fit
minEntries	Minimum number of entries
minusBins	Number of bins from peak to subtract to get the fit range
relErrorCut	Cut applied to relative error of parameter. Note, for multi-particle weights, the cut is loosend by a factor of 2
chi2nuCut	Cut on \( \chi^2/\nu\) - the reduced \(\chi^2\)
minWeight	Least weight ot consider
regCut	Regularization cut-off
residuals	Mode for residual plots
scaleToPeak	If true, scale distribution to peak value
best	Optional array to store fits in

Returns: List of fit parameters

Definition at line 946 of file AliFMDEnergyFitter.cxx.

TH2 * AliFMDEnergyFitter::RingHistos::Make	(	const char *	name,
		const char *	title,
		const TAxis &	eAxis,
		Double_t	deMax = `12`,
		Int_t	nDeBins = `300`,
		Bool_t	incr = `true`
	)

Make E/E_mip histogram

Parameters

name	Name of histogram
title	Title of histogram
eAxis	\(\eta\) axis
deMax	Maximum energy loss
nDeBins	Number energy loss bins
incr	Whether to make bins of increasing size

Definition at line 681 of file AliFMDEnergyFitter.cxx.

TArrayD AliFMDEnergyFitter::RingHistos::MakeIncreasingAxis	(	Int_t	n,
		Double_t	min,
		Double_t	max
	)		const

virtual

Make an axis with increasing bins

Parameters

n	Number of bins
min	Minimum
max	Maximum

Returns: An axis with quadratically increasing bin size

Reimplemented in AliFMDMCHitEnergyFitter::RingHistos, and AliFMDMCTrackInspector::RingHistos.

Definition at line 650 of file AliFMDEnergyFitter.cxx.

TH1 * AliFMDEnergyFitter::RingHistos::MakePar	(	const char *	name,
		const char *	title,
		const TAxis &	eta
	)		const

Make a parameter histogram

Parameters

name	Name of histogram.
title	Title of histogram.
eta	Eta axis

Returns

Definition at line 852 of file AliFMDEnergyFitter.cxx.

TH1 * AliFMDEnergyFitter::RingHistos::MakeTotal	(	const char *	name,
		const char *	title,
		const TAxis &	eta,
		Int_t	low,
		Int_t	high,
		Double_t	val,
		Double_t	err
	)		const

Make a histogram that contains the results of the fit over the full ring

Parameters

name	Name
title	Title
eta	Eta axis
low	Least bin
high	Largest bin
val	Value of parameter
err	Error on parameter

Returns: The newly allocated histogram

Definition at line 883 of file AliFMDEnergyFitter.cxx.

RingHistos& AliFMDEnergyFitter::RingHistos::operator= ( const RingHistos & o )

inline

Assignment operator - not defined

Parameters

o	Object to assign from

Returns: Reference to this

Definition at line 404 of file AliFMDEnergyFitter.h.

void AliFMDEnergyFitter::RingHistos::Scale ( TH1 * dist ) const

virtual

Do scaling of histogram before fitting. This can be overwritten to do some smoothing or the like. By default, this simply scales to the bin width.

Parameters

dist	Histogram to scale.

Reimplemented in AliFMDMCTrackInspector::RingHistos.

Definition at line 1211 of file AliFMDEnergyFitter.cxx.

Referenced by AliFMDMCTrackInspector::RingHistos::Scale().

void AliFMDEnergyFitter::RingHistos::SetupForData	(	const TAxis &	eAxis,
		const TAxis &	cAxis,
		Double_t	maxDE = `10`,
		Int_t	nDEbins = `300`,
		Bool_t	useIncrBin = `true`
	)

virtual

Initialise object

Parameters

eAxis	Eta axis
cAxis	Centrality axis
maxDE	Max energy loss to consider
nDEbins	Number of bins
useIncrBin	Whether to use an increasing bin size

Reimplemented in AliFMDMCHitEnergyFitter::RingHistos, and AliFMDMCTrackInspector::RingHistos.

Definition at line 768 of file AliFMDEnergyFitter.cxx.

Referenced by AliFMDEnergyFitter::SetupForData().

Member Data Documentation

TObjArray AliFMDEnergyFitter::RingHistos::fBest

mutable

Definition at line 679 of file AliFMDEnergyFitter.h.

Referenced by RingHistos().

Int_t AliFMDEnergyFitter::RingHistos::fDebug

Definition at line 681 of file AliFMDEnergyFitter.h.

Referenced by AliFMDEnergyFitter::CreateOutputObjects(), AliFMDEnergyFitter::Init(), RingHistos(), and AliFMDEnergyFitter::SetDebug().

TH1* AliFMDEnergyFitter::RingHistos::fEDist

Definition at line 674 of file AliFMDEnergyFitter.h.

TH1* AliFMDEnergyFitter::RingHistos::fEmpty

Definition at line 675 of file AliFMDEnergyFitter.h.

TClonesArray AliFMDEnergyFitter::RingHistos::fFits

mutable

Definition at line 680 of file AliFMDEnergyFitter.h.

TH2* AliFMDEnergyFitter::RingHistos::fHist

Definition at line 676 of file AliFMDEnergyFitter.h.

TList* AliFMDEnergyFitter::RingHistos::fList

Definition at line 678 of file AliFMDEnergyFitter.h.

Referenced by AliFMDMCTrackInspector::CreateOutputObjects().

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

PWGLF/FORWARD/analysis2/AliFMDEnergyFitter.h
PWGLF/FORWARD/analysis2/AliFMDEnergyFitter.cxx

Public Types

Public Member Functions

Public Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation