AliTrackletdNdetaUtils Class Reference

Inheritance diagram for AliTrackletdNdetaUtils:

Public Types
typedef TList	Container

Public Member Functions
	AliTrackletdNdetaUtils ()
virtual	~AliTrackletdNdetaUtils ()

Static Public Member Functions
Service functions to check histogram consistencies
static Bool_t	CheckAxisNBins (const char *which, const TAxis *a1, const TAxis *a2)
static Bool_t	CheckAxisLimits (const char *which, const TAxis *a1, const TAxis *a2)
static Bool_t	CheckAxisBins (const char *which, const TAxis *a1, const TAxis *a2)
static Bool_t	CheckAxisLabels (const char *which, const TAxis *a1, const TAxis *a2)
static Bool_t	CheckAxis (const char *which, const TAxis *a1, const TAxis *a2, Bool_t alsoLbls)
static Bool_t	CheckConsistency (const TH1 *h1, const TH1 *h2)
Utilities
static TObject *	GetO (Container *parent, const char *name, TClass *cls)
static TObject *	GetO (TDirectory *parent, const char *name, TClass *cls)
static TH1 *	GetH1 (Container *parent, const char *name)
static TH2 *	GetH2 (Container *parent, const char *name)
static Container *	GetC (Container *parent, const char *name)
static Container *	GetC (TDirectory *parent, const char *name)
static Double_t	GetD (Container *parent, const char *name, Double_t def=-1)
static Int_t	GetI (Container *parent, const char *name, Int_t def=-1)
static Int_t	GetB (Container *parent, const char *name, Bool_t def=false)
static TH1 *	CopyH1 (Container *parent, const char *name, const char *newName=0)
static TH2 *	CopyH2 (Container *parent, const char *name, const char *newName=0)
static TH1 *	Make1D (Container &c, const TString &name, const TString &title, Color_t color, Style_t style, const TAxis &xAxis)
static TH2 *	Make2D (Container &c, const TString &name, const TString &title, Color_t color, Style_t style, const TAxis &xAxis, const TAxis &yAxis)
static TH1 *	Scale (TH1 *h, Double_t x, Double_t xe)
static TH2 *	Scale (TH2 *h, Double_t x, Double_t xe)
static TH2 *	Scale (TH2 *h, TH1 *s)
static void	FixAxis (TAxis &axis, const char *title=0)
static void	ScaleAxis (TAxis &axis, Double_t fact=1)
static void	SetAxis (TAxis &axis, Int_t n, Double_t *borders)
static void	SetAxis (TAxis &axis, const TString &spec, const char *sep=":,")
static void	SetAxis (TAxis &axis, Int_t n, Double_t l, Double_t h)
static void	SetAxis (TAxis &axis, Int_t n, Double_t m)
static void	PrintAxis (const TAxis &axis, Int_t nSig=2, const char *alt=0)
static TH2 *	ScaleToIPz (TH2 *h, TH1 *ipZ, Bool_t full=false)
static TH1 *	AverageOverIPz (TH2 *h, const char *name, UShort_t mode, TH1 *ipz, TH2 *mask=0)
static TObject *	CloneAndAdd (Container *c, TObject *o)
static Double_t	Integrate (TH1 *h, Double_t min, Double_t max, Double_t &err)
static Double_t	RatioE (Double_t n, Double_t en, Double_t d, Double_t ed, Double_t &er)
static Double_t	RatioE2 (Double_t n, Double_t e2n, Double_t d, Double_t e2d, Double_t &e2r)

Protected Member Functions
	ClassDef (AliTrackletdNdetaUtils, 1)

Detailed Description

Class with utlity functions

Definition at line 24 of file AliTrackletdNdetaUtils.C.

Member Typedef Documentation

typedef TList AliTrackletdNdetaUtils::Container

Definition at line 27 of file AliTrackletdNdetaUtils.C.

Constructor & Destructor Documentation

AliTrackletdNdetaUtils::AliTrackletdNdetaUtils ( )

inline

Dummy constructor

Definition at line 31 of file AliTrackletdNdetaUtils.C.

virtual AliTrackletdNdetaUtils::~AliTrackletdNdetaUtils ( )

inlinevirtual

Dummy destructor

Definition at line 35 of file AliTrackletdNdetaUtils.C.

Member Function Documentation

TH1 * AliTrackletdNdetaUtils::AverageOverIPz ( TH2 *  h, const char *  name, UShort_t  mode, TH1 *  ipz, TH2 *  mask = 0  )

static

Average primary particle \(\mathrm{d}N_{\mathrm{ch}}/\mathrm{d}\\eta\) over \(\mathrm{IP}_z\)

Mode can be one of

• 0: Scale average by content of ipz and do error propagation
• 1: Only propagate errors from ipz (no scale)
• 2: Do not propagate errors or scale by ipz

Parameters

h	Histogram
name	Name of projection
mode	Mode of operation.
ipz	Vertex distribution
mask	Optional mask - if a bin is zero here, do not count it in average.

Returns

Newly allocated histogram or null

Definition at line 994 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawdNdeta(), and AliTrackletdNdetaMCTask::CentBin::MasterFinalize().

Bool_t AliTrackletdNdetaUtils::CheckAxis ( const char *  which, const TAxis *  a1, const TAxis *  a2, Bool_t  alsoLbls  )

static

Check that axis definitions are compatible

Parameters

which	Which axis we're checking
a1	First axis
a2	Second axis
alsoLbls	If true, also check labels

Returns

true if the axes are compatible

Definition at line 532 of file AliTrackletdNdetaUtils.C.

Referenced by CheckConsistency().

Bool_t AliTrackletdNdetaUtils::CheckAxisBins ( const char *  which, const TAxis *  a1, const TAxis *  a2  )

static

In case of non-uniform bins, check each bin edge to see if they are the same

Parameters

which	Which axis we're checking
a1	First axis
a2	Second axis

Returns

true if all bin edges are the same

Definition at line 472 of file AliTrackletdNdetaUtils.C.

Referenced by CheckAxis().

Bool_t AliTrackletdNdetaUtils::CheckAxisLabels ( const char *  which, const TAxis *  a1, const TAxis *  a2  )

static

Check if all bin labels (if specified) are the same

Parameters

which	Which axis we're checking
a1	First axis
a2	Second axis

Returns

True if all bin labels are the same

Definition at line 499 of file AliTrackletdNdetaUtils.C.

Referenced by CheckAxis().

Bool_t AliTrackletdNdetaUtils::CheckAxisLimits ( const char *  which, const TAxis *  a1, const TAxis *  a2  )

static

Check axis limits (min,max) are the same

Parameters

which	Which axis we're checking
a1	First axis
a2	Second axis

Returns

true if axis min/max are indetical

Definition at line 458 of file AliTrackletdNdetaUtils.C.

Referenced by CheckAxis().

Bool_t AliTrackletdNdetaUtils::CheckAxisNBins ( const char *  which, const TAxis *  a1, const TAxis *  a2  )

static

Check if both axis have the same number of bins

Parameters

which	Which axis is being checked
a1	First axis
a2	Second axis

Returns

true of both axis have equal number of bins

Definition at line 446 of file AliTrackletdNdetaUtils.C.

Referenced by CheckAxis().

Bool_t AliTrackletdNdetaUtils::CheckConsistency ( const TH1 *  h1, const TH1 *  h2  )

static

Check if two histograms are compatible by checking each defined axis.

Parameters

h1	First histogram
h2	Second histogram

Returns

true of they are compatible

Definition at line 544 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::Run().

AliTrackletdNdetaUtils::ClassDef ( AliTrackletdNdetaUtils  , 1    )

protected

TObject * AliTrackletdNdetaUtils::CloneAndAdd ( Container *  c, TObject *  o  )

static

Clone an object and add to container

Parameters

c	Container to add to
o	Object to clone

Returns

The new copy of the object

Definition at line 1081 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaMCTask::CentBin::MakeAlpha(), AliTrackletdNdetaTask::HistoSet::MasterFinalize(), AliTrackletdNdetaTask::CentBin::MasterFinalize(), AliTrackletdNdetaTask::MasterFinalize(), AliTrackletdNdetaMCTask::CentBin::MasterFinalize(), and AliTrackletdNdetaMCTask::MasterFinalize().

TH1 * AliTrackletdNdetaUtils::CopyH1 ( Container *  parent, const char *  name, const char *  newName = 0  )

static

Get a copy of a 1D histogram from a container

Parameters

parent	Container
name	Name of histogram
newName	Optional new name of copy

Returns

Pointer to histogram or null

Definition at line 729 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawdNdeta(), AliTrackletdNdetaTask::CentBin::EstimateBackground(), AliTrackletdNdetaPost::Make2Stack(), and AliTrackletdNdetaPost::Run().

TH2 * AliTrackletdNdetaUtils::CopyH2 ( Container *  parent, const char *  name, const char *  newName = 0  )

static

Get a copy of a 2D histogram from a container

Parameters

parent	Container
name	Name of histogram
newName	Optional new name of copy

Returns

Pointer to histogram or null

Definition at line 740 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawAlpha(), AliTrackletdNdetaPost::DrawBackground(), AliTrackletdNdetaPost::DrawdNdeta(), and AliTrackletdNdetaTask::CentBin::EstimateBackground().

void AliTrackletdNdetaUtils::FixAxis ( TAxis &  axis, const char *  title = 0  )

static

Fix axis attributes

Parameters

axis	Axis to fix
title	Possible title for axis

Definition at line 849 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaTask::AliTrackletdNdetaTask(), AliTrackletdNdetaTask::InitCentBins(), AliTrackletdNdetaMCTask::MakePdgAxis(), ScaleAxis(), SetAxis(), and AliTrackletdNdetaTask::WorkerInit().

Int_t AliTrackletdNdetaUtils::GetB ( Container *  parent, const char *  name, Bool_t  def = false  )

static

Get a boolean value from a container

Parameters

parent	Parent container
name	Name of parameter
def	Default value if not found

Returns

The value (or default if not found)

Definition at line 718 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawParams().

AliTrackletdNdetaUtils::Container * AliTrackletdNdetaUtils::GetC ( Container *  parent, const char *  name  )

static

Get a container from a container

Parameters

parent	Container
name	Name of container

Returns

Pointer to container or null

Definition at line 686 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawAlpha(), AliTrackletdNdetaPost::DrawBackground(), AliTrackletdNdetaPost::DrawdNdeta(), AliTrackletdNdetaPost::DrawParams(), AliTrackletdNdetaTask::HistoSet::FinalizeInit(), AliTrackletdNdetaTask::CentBin::FinalizeInit(), AliTrackletdNdetaPost::FindDelta(), AliTrackletdNdetaPost::FindSub(), AliTrackletdNdetaPost::GetDeltaScale(), AliTrackletdNdetaPost::GetDeltaScaleDist(), AliTrackletdNdetaMCTask::CentBin::MasterFinalize(), AliTrackletdNdetaPost::ProcessBin(), and AliTrackletdNdetaPost::Run().

AliTrackletdNdetaUtils::Container * AliTrackletdNdetaUtils::GetC ( TDirectory *  parent, const char *  name  )

static

Get a container from a directory

Parameters

parent	Container
name	Name of container

Returns

Pointer to container or null

Definition at line 692 of file AliTrackletdNdetaUtils.C.

Double_t AliTrackletdNdetaUtils::GetD ( Container *  parent, const char *  name, Double_t  def = -1  )

static

Get a double-precision value from a container

Parameters

parent	Parent container
name	Name of parameter
def	Default value if not found

Returns

The value (or default if not found)

Definition at line 697 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawParams(), AliTrackletdNdetaTask::CentBin::EstimateBackground(), AliTrackletdNdetaPost::GetDeltaScale(), and AliTrackletdNdetaPost::Run().

TH1 * AliTrackletdNdetaUtils::GetH1 ( Container *  parent, const char *  name  )

static

Get a 1D histogram from a container

Parameters

parent	Container
name	Name of histogram

Returns

Pointer to histogram or null

Definition at line 675 of file AliTrackletdNdetaUtils.C.

Referenced by CopyH1(), AliTrackletdNdetaPost::DrawdNdeta(), AliTrackletdNdetaPost::DrawGeneral(), AliTrackletdNdetaPost::DrawSim(), AliTrackletdNdetaPost::DrawSpecies(), AliTrackletdNdetaTask::CentBin::EstimateBackground(), AliTrackletdNdetaTask::HistoSet::FinalizeInit(), AliTrackletdNdetaTask::CentBin::FinalizeInit(), AliTrackletdNdetaPost::FindDelta(), AliTrackletdNdetaPost::FindSub(), AliTrackletdNdetaPost::GetDeltaIntDist(), AliTrackletdNdetaTask::MasterFinalize(), AliTrackletdNdetaMCTask::CentBin::MasterFinalize(), AliTrackletdNdetaMCTask::MasterFinalize(), and AliTrackletdNdetaPost::Run().

TH2 * AliTrackletdNdetaUtils::GetH2 ( Container *  parent, const char *  name  )

static

Get a 2D histogram from a container

Parameters

parent	Container
name	Name of histogram

Returns

Pointer to histogram or null

Definition at line 680 of file AliTrackletdNdetaUtils.C.

Referenced by CopyH2(), AliTrackletdNdetaPost::DrawAlpha(), AliTrackletdNdetaPost::DrawBackground(), AliTrackletdNdetaPost::DrawClusters(), AliTrackletdNdetaTask::CentBin::EstimateBackground(), AliTrackletdNdetaTask::HistoSet::FinalizeInit(), AliTrackletdNdetaPost::GetDeltaIntDist(), AliTrackletdNdetaMCTask::CentBin::MakeAlpha(), AliTrackletdNdetaTask::MasterFinalize(), and AliTrackletdNdetaMCTask::CentBin::MasterFinalize().

Int_t AliTrackletdNdetaUtils::GetI ( Container *  parent, const char *  name, Int_t  def = -1  )

static

Get a integer value from a container

Parameters

parent	Parent container
name	Name of parameter
def	Default value if not found

Returns

The value (or default if not found)

Definition at line 708 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawParams().

TObject * AliTrackletdNdetaUtils::GetO ( Container *  parent, const char *  name, TClass *  cls  )

static

Get an object from a container.

Parameters

parent	Container
name	Name of object
cls	If not null, check if object has this type

Returns

Pointer to object or null

Definition at line 627 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawSim(), GetB(), GetC(), GetD(), GetH1(), GetH2(), and GetI().

TObject * AliTrackletdNdetaUtils::GetO ( TDirectory *  parent, const char *  name, TClass *  cls  )

static

Get an object from a directory.

Parameters

parent	directory
name	Name of object
cls	If not null, check if object has this type

Returns

Pointer to object or null

Definition at line 651 of file AliTrackletdNdetaUtils.C.

Double_t AliTrackletdNdetaUtils::Integrate ( TH1 *  h, Double_t  min, Double_t  max, Double_t &  err  )

static

Helper function to integrate a histogram. Note, for symmetric histograms, both sides are integrate, and the errors added in quadrature.

Parameters

h	Histogram to integrate
min	Least limint
max	Largest limit
err	On return, the error on the integral (95% CL)

Returns

The integral value.

Definition at line 1097 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::GetDeltaIntDist(), and AliTrackletdNdetaTask::HistoSet::MasterFinalize().

TH1 * AliTrackletdNdetaUtils::Make1D ( Container &  c, const TString &  name, const TString &  title, Color_t  color, Style_t  style, const TAxis &  xAxis  )

static

Service function to make a 1D histogram from an axis definition

Parameters

name	Name of histogram
title	Title of histogram
xAxis	X axis to use
c	Container
color	Color
style	Marker style

Returns

Newly created histogram

Definition at line 751 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaTask::HistoSet::WorkerInit(), AliTrackletdNdetaTask::CentBin::WorkerInit(), AliTrackletdNdetaTask::WorkerInit(), and AliTrackletdNdetaMCTask::CentBin::WorkerInit().

TH2 * AliTrackletdNdetaUtils::Make2D ( Container &  c, const TString &  name, const TString &  title, Color_t  color, Style_t  style, const TAxis &  xAxis, const TAxis &  yAxis  )

static

Service function to make a 2D histogram from axis definitions

Parameters

name	Name of histogram
title	Title of histogram
xAxis	X axis definition
yAxis	Y axis definition
c	Container
color	Color
style	Marker style

Returns

Newly created histogram

Definition at line 794 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaTask::HistoSet::WorkerInit(), AliTrackletdNdetaTask::WorkerInit(), and AliTrackletdNdetaMCTask::CentBin::WorkerInit().

void AliTrackletdNdetaUtils::PrintAxis ( const TAxis &  axis, Int_t  nSig = 2, const char *  alt = 0  )

static

Print axis

Parameters

axis	Axis to print
nSig	Number of significant digits
alt	Atlernate name

Definition at line 941 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaTask::Print().

Double_t AliTrackletdNdetaUtils::RatioE ( Double_t  n, Double_t  en, Double_t  d, Double_t  ed, Double_t &  er  )

static

Calculate ratio and error on ratio

Parameters

n	Numerator value
en	Numerator error
d	Denominator value
ed	Denominator error
er	On return, ratio error

Returns

Ratio

Definition at line 1120 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawdNdeta(), AliTrackletdNdetaTask::CentBin::EstimateBackground(), and AliTrackletdNdetaPost::GetDeltaScale().

Double_t AliTrackletdNdetaUtils::RatioE2 ( Double_t  n, Double_t  e2n, Double_t  d, Double_t  e2d, Double_t &  e2r  )

static

Calculate ratio and error on ratio

Parameters

n	Numerator value
e2n	Squared numerator error
d	Denominator value
e2d	Squared denominator error
e2r	On return, squared ratio error

Returns

Ratio

Definition at line 1132 of file AliTrackletdNdetaUtils.C.

TH1 * AliTrackletdNdetaUtils::Scale ( TH1 *  h, Double_t  x, Double_t  xe  )

static

Scale a histogram by factor with error propagation

Parameters

h	Histogram to scale
x	Scalar
xe	Error on scalar

Returns

Pointer to histogram

Definition at line 610 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaPost::DrawdNdeta(), and AliTrackletdNdetaTask::CentBin::EstimateBackground().

TH2 * AliTrackletdNdetaUtils::Scale ( TH2 *  h, Double_t  x, Double_t  xe  )

static

Scale a histogram by factor with error propagation

Parameters

h	Histogram to scale
x	Scalar
xe	Error on scalar

Returns

Pointer to histogram

Definition at line 591 of file AliTrackletdNdetaUtils.C.

TH2 * AliTrackletdNdetaUtils::Scale ( TH2 *  h, TH1 *  s  )

static

Scale the two dimensional histogram with content of the 1-dimensional histogram (over X)

Parameters

h	Histogram to scale
s	The scalar histogram

Returns

The scaled histogram (pointer to input)

Definition at line 569 of file AliTrackletdNdetaUtils.C.

void AliTrackletdNdetaUtils::ScaleAxis ( TAxis &  axis, Double_t  fact = 1  )

static

Scale bins of an axis by constant factor. The number of bins remains the same.

Parameters

axis	Axis to modify
fact	Factor to scale by

Definition at line 865 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaMCTask::CentBin::WorkerInit().

TH2 * AliTrackletdNdetaUtils::ScaleToIPz ( TH2 *  h, TH1 *  ipZ, Bool_t  full = false  )

static

Scale each Y-row of input histogram to the number of events in second histogram. Also scale to bin-width in X direction.

Parameters

h	Input histogram
ipZ	Histogram to scale by
full	If true, do error propegation of IPz errors

Returns

New copy of input, scaled by second histogram

Definition at line 957 of file AliTrackletdNdetaUtils.C.

Referenced by AliTrackletdNdetaTask::HistoSet::MasterFinalize(), and AliTrackletdNdetaMCTask::CentBin::MasterFinalize().

void AliTrackletdNdetaUtils::SetAxis ( TAxis &  axis, Int_t  n, Double_t *  borders  )

static

Set an axis based on bin borders

Parameters

axis	Axis to set
n	Number of bins
borders	Bin borders (n+1 entries)

Definition at line 879 of file AliTrackletdNdetaUtils.C.

Referenced by SetAxis(), AliTrackletdNdetaTask::SetCentralityAxis(), AliTrackletdNdetaTask::SetEtaAxis(), AliTrackletdNdetaTask::SetIPzAxis(), and AliTrackletdNdetaTask::SetPhiAxis().

void AliTrackletdNdetaUtils::SetAxis ( TAxis &  axis, const TString &  spec, const char *  sep = ":,"  )

static

Set an axis based on test string of specs. The token separator is given in sep.

Parameters

axis	Axis to set
spec	Specification
sep	Token separate

Definition at line 885 of file AliTrackletdNdetaUtils.C.

void AliTrackletdNdetaUtils::SetAxis ( TAxis &  axis, Int_t  n, Double_t  l, Double_t  h  )

static

Set axis with least and largest values

Parameters

axis	Axis to set
n	Number of bins
l	Least value
h	Largest value

Definition at line 927 of file AliTrackletdNdetaUtils.C.

void AliTrackletdNdetaUtils::SetAxis ( TAxis &  axis, Int_t  n, Double_t  m  )

static

Set a symmetric axis

Parameters

axis	Axis to set
n	Number of bins
m	Maximum absolute value

Definition at line 936 of file AliTrackletdNdetaUtils.C.

---

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

• PWGLF/FORWARD/analysis2/dndeta/tracklets2/AliTrackletdNdetaUtils.C