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class AliITSMeanVertexer: public TObject


Class to compute vertex position using SPD local reconstruction
An average vertex position using all the events
is built and saved
Individual vertices can be optionally stored
Origin: M.Masera  (masera@to.infn.it)
Usage:
Class used by the ITSSPDVertexDiamondda.cxx detector algorithm

Id

Function Members (Methods)

public:

	AliITSMeanVertexer(Bool_t mode = kTRUE)
virtual	~AliITSMeanVertexer()
void	TObject::AbstractMethod(const char* method) const
virtual void	TObject::AppendPad(Option_t* option = "")
virtual void	TObject::Browse(TBrowser* b)
static TClass*	Class()
virtual const char*	TObject::ClassName() const
virtual void	TObject::Clear(Option_t* = "")
virtual TObject*	TObject::Clone(const char* newname = "") const
virtual Int_t	TObject::Compare(const TObject* obj) const
virtual void	TObject::Copy(TObject& object) const
virtual void	TObject::Delete(Option_t* option = "")MENU
virtual Int_t	TObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual void	TObject::Draw(Option_t* option = "")
virtual void	TObject::DrawClass() constMENU
virtual TObject*	TObject::DrawClone(Option_t* option = "") constMENU
virtual void	TObject::Dump() constMENU
virtual void	TObject::Error(const char* method, const char* msgfmt) const
virtual void	TObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual void	TObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual void	TObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual void	TObject::Fatal(const char* method, const char* msgfmt) const
virtual TObject*	TObject::FindObject(const char* name) const
virtual TObject*	TObject::FindObject(const TObject* obj) const
Int_t	GetArrayEntries() const
virtual Option_t*	TObject::GetDrawOption() const
static Long_t	TObject::GetDtorOnly()
const AliESDVertex*	GetElementAt(Int_t i) const
virtual const char*	TObject::GetIconName() const
virtual const char*	TObject::GetName() const
virtual char*	TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_t	TObject::GetObjectStat()
virtual Option_t*	TObject::GetOption() const
UInt_t	GetSPD0cls(Int_t i) const
virtual const char*	TObject::GetTitle() const
virtual UInt_t	TObject::GetUniqueID() const
const TH2F*	GetVertexXY() const
const TH1F*	GetVertexZ() const
virtual Bool_t	TObject::HandleTimer(TTimer* timer)
virtual ULong_t	TObject::Hash() const
virtual void	TObject::Info(const char* method, const char* msgfmt) const
virtual Bool_t	TObject::InheritsFrom(const char* classname) const
virtual Bool_t	TObject::InheritsFrom(const TClass* cl) const
Bool_t	Init()
virtual void	TObject::Inspect() constMENU
void	TObject::InvertBit(UInt_t f)
virtual TClass*	IsA() const
virtual Bool_t	TObject::IsEqual(const TObject* obj) const
virtual Bool_t	TObject::IsFolder() const
Bool_t	IsGoodVertex(Int_t i) const
Bool_t	TObject::IsOnHeap() const
virtual Bool_t	TObject::IsSortable() const
Bool_t	TObject::IsZombie() const
virtual void	TObject::ls(Option_t* option = "") const
void	TObject::MayNotUse(const char* method) const
virtual Bool_t	TObject::Notify()
void	TObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const
static void	TObject::operator delete(void* ptr)
static void	TObject::operator delete(void* ptr, void* vp)
static void	TObject::operator delete[](void* ptr)
static void	TObject::operator delete[](void* ptr, void* vp)
void*	TObject::operator new(size_t sz)
void*	TObject::operator new(size_t sz, void* vp)
void*	TObject::operator new[](size_t sz)
void*	TObject::operator new[](size_t sz, void* vp)
virtual void	TObject::Paint(Option_t* option = "")
virtual void	TObject::Pop()
virtual void	TObject::Print(Option_t* option = "") const
virtual Int_t	TObject::Read(const char* name)
Bool_t	Reconstruct(AliRawReader* rawReader)
virtual void	TObject::RecursiveRemove(TObject* obj)
void	TObject::ResetBit(UInt_t f)
virtual void	TObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual void	TObject::SavePrimitive(basic_ostream<char,char_traits<char> >& out, Option_t* option = "")
void	TObject::SetBit(UInt_t f)
void	TObject::SetBit(UInt_t f, Bool_t set)
void	SetCutOnCls(UInt_t vmin = 50, UInt_t vmax = 7000)
void	SetCutOnErrX(Double_t cut = 9.5)
void	SetCutOnR(Double_t cut = 0.5)
virtual void	TObject::SetDrawOption(Option_t* option = "")MENU
static void	TObject::SetDtorOnly(void* obj)
void	SetFilterOnContributors(Int_t nc = 1)
static void	TObject::SetObjectStat(Bool_t stat)
virtual void	TObject::SetUniqueID(UInt_t uid)
void	SetZFiducialRegion(Double_t zcut = 40.)
virtual void	ShowMembers(TMemberInspector&)
virtual void	Streamer(TBuffer&)
void	StreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)
virtual void	TObject::SysError(const char* method, const char* msgfmt) const
Bool_t	TObject::TestBit(UInt_t f) const
Int_t	TObject::TestBits(UInt_t f) const
virtual void	TObject::UseCurrentStyle()
virtual void	TObject::Warning(const char* method, const char* msgfmt) const
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const
void	WriteVertices(const char* filename)

protected:

virtual void	TObject::DoError(int level, const char* location, const char* fmt, va_list va) const
void	TObject::MakeZombie()

private:

	AliITSMeanVertexer(const AliITSMeanVertexer& vtxr)
void	AddToMean(AliESDVertex* vert)
Bool_t	ComputeMean(Bool_t killOutliers)
Bool_t	Filter(AliESDVertex* vert, UInt_t mult)
AliITSMeanVertexer&	operator=(const AliITSMeanVertexer&)
void	Reset(Bool_t redefine2D, Bool_t complete)
void	ResetArray()

Data Members

public:

enum TObject::EStatusBits {	kCanDelete
	kMustCleanup
	kObjInCanvas
	kIsReferenced
	kHasUUID
	kCannotPick
	kNoContextMenu
	kInvalidObject
};
enum TObject::[unnamed] {	kIsOnHeap
	kNotDeleted
	kZombie
	kBitMask
	kSingleKey
	kOverwrite
	kWriteDelete
};

private:

TBits	fAccEvents	! bit string: 1 for good events 0 for bad ones
Double_t	fAverContributors	! Average number of contributors
Double_t	fAverPos[3]	! average position
Double_t	fAverPosSq[3][3]	! average square position for covariance
Double_t	fAverPosSqSum[3][3]	! average square position sum for covariance (transient)
Double_t	fAverPosSum[3]	! average position sum (transient)
UInt_t*	fClu0	! number of clusters on SPD inner layer
TH1F*	fContrH	! debug hist: number of contributors
TH1F*	fContrHa	! debug hist: number of contributors - after filter
AliITSDetTypeRec*	fDetTypeRec	! ITS reco class
TH1F*	fDistH	! debug hist: distance from peak
Double_t	fErrXCut	! cut on error on X (error*1000<fErrXCut)
TH1F*	fErrXH	! debug hist: error on X before Filter
TH1F*	fErrXHa	! debug hist: error on X after Filter
Int_t	fFilterOnContributors	! Numb. of contrib must be > fFilter...
UInt_t	fHighSPD0	! high SPD0 cls value to accept event
Int_t	fIndex	! current index on the arrays
UInt_t	fLowSPD0	! low SPD0 cls value to accept event
Bool_t	fMode	! kTRUE for Vertexer3D;
TH1F*	fMultH	! debug hist: mult. on SPD0 before Filter
TH1F*	fMultHa	! debug hist: mult. on SPD0 after Filter
Int_t	fNoEventsContr	! number of events used for mean vertex
Double_t	fRCut	\| cut on distance from first estimate (mm)
Double_t	fTotContributors	! Integrated number of contributors
TClonesArray	fVertArray	! array of vertices to be averaged
TH2F*	fVertexXY	! histogram with transverse vertex distribution (vertex diamond)
TH1F*	fVertexZ	! histogram with longitudinal vertex distribution
AliITSVertexer*	fVertexer	! vertexer
Double_t	fWeighPos[3]	! weighted average position
Double_t	fWeighPosSum[3]	! weighted average position sum (transient)
Double_t	fWeighSig[3]	! errors on weighted average position
Double_t	fWeighSigSum[3]	! weighted average position sum (transient)
Double_t	fZCutDiamond	! -/+ fZCutDiamond is the Z fiducial region
static const Int_t	fgkMaxNumOfEvents	max. number of events

Class Charts

Inheritance Chart:

TObject

←

AliITSMeanVertexer

Function documentation

AliITSMeanVertexer(Bool_t mode = kTRUE)

 Default Constructor

void Reset(Bool_t redefine2D, Bool_t complete)

 Reset averages
 Both arguments are kFALSE when the method is called by the constructor
 redefine2D is TRUE when the method is called by ComputeMean at the second
            pass.
 redefine2D is FALSE and complete is TRUE when the method is called
            after a failure cof ComputeMean(kTRUE)

Bool_t Init()

 Initialize filters
 Initialize geometry
 Initialize ITS classes

~AliITSMeanVertexer()

 Destructor

Bool_t Reconstruct(AliRawReader* rawReader)

 Performs SPD local reconstruction
 and vertex finding
 returns true in case a vertex is found

void WriteVertices(const char* filename)

 Compute mean vertex and
 store it along with the histograms
 in a file

Bool_t Filter(AliESDVertex* vert, UInt_t mult)

 Apply selection criteria to events

void AddToMean(AliESDVertex* vert)

 update mean vertex

Bool_t ComputeMean(Bool_t killOutliers)

 compute mean vertex
 called once with killOutliers = kFALSE and then again with
 killOutliers = kTRUE

AliITSMeanVertexer(Bool_t mode = kTRUE)

 default constructor

void SetFilterOnContributors(Int_t nc = 1)

{fFilterOnContributors = nc;}

void SetCutOnErrX(Double_t cut = 9.5)

{fErrXCut = cut;}

void SetCutOnR(Double_t cut = 0.5)

{fRCut = cut;}

void SetCutOnCls(UInt_t vmin = 50, UInt_t vmax = 7000)

{fLowSPD0=vmin; fHighSPD0=vmax;}

void SetZFiducialRegion(Double_t zcut = 40.)

{fZCutDiamond=zcut;}

const TH2F* GetVertexXY() const

{ return fVertexXY; }

const TH1F* GetVertexZ() const

{ return fVertexZ; }

Int_t GetArrayEntries() const

 Methods used for debug purposes

{return fVertArray.GetEntries();}

const AliESDVertex* GetElementAt(Int_t i) const

{return (AliESDVertex*)fVertArray[i];}

UInt_t GetSPD0cls(Int_t i) const

{return fClu0[i];}

Bool_t IsGoodVertex(Int_t i) const

{return (fAccEvents.TestBitNumber(i)); }

AliITSMeanVertexer& operator=(const AliITSMeanVertexer& )

 assignment operator (NO assignment allowed)

void ResetArray()