class AliTrackResidualsLinear: public AliTrackResiduals

   Implementation of the derived class for track residuals
   based on linear chi2 minimization
  The minimization relies on the fact that the alignment parameters
   (angles and translations) are small.
   TLinearFitter used for minimization
   Possibility to fix Paramaters
   FixParameter()ReleaseParameter();
   Possibility to define fraction of outliers to be skipped

   marian.ivanov@cern.ch

Function Members (Methods)

public:

	AliTrackResidualsLinear()
	AliTrackResidualsLinear(Int_t ntracks)
	AliTrackResidualsLinear(const AliTrackResidualsLinear& res)
virtual	~AliTrackResidualsLinear()
void	TObject::AbstractMethod(const char* method) const
Bool_t	AliTrackResiduals::AddTrackPointArrays(AliTrackPointArray* volarray, AliTrackPointArray* trackarray)
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
void	AliTrackResiduals::FixParameter(Int_t par, Float_t value = 0.)
AliAlignObj*	AliTrackResiduals::GetAlignObj() const
Float_t	AliTrackResiduals::GetChi2() const
const Double_t*	GetCovariance() const
virtual Option_t*	TObject::GetDrawOption() const
static Long_t	TObject::GetDtorOnly()
virtual const char*	TObject::GetIconName() const
Int_t	AliTrackResiduals::GetMinNPoints() const
virtual const char*	TObject::GetName() const
Int_t	AliTrackResiduals::GetNdf() const
Int_t	AliTrackResiduals::GetNFilledTracks() const
Int_t	AliTrackResiduals::GetNFreeParam()
Int_t	AliTrackResiduals::GetNTracks() const
virtual char*	TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_t	TObject::GetObjectStat()
virtual Option_t*	TObject::GetOption() const
const Double_t*	GetParameters() const
virtual const char*	TObject::GetTitle() const
Bool_t	AliTrackResiduals::GetTrackPointArrays(Int_t i, AliTrackPointArray& volarray, AliTrackPointArray& trackarray) const
virtual UInt_t	TObject::GetUniqueID() 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
void	AliTrackResiduals::InitAlignObj()
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	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	Minimize()
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)
AliTrackResidualsLinear&	operator=(const AliTrackResidualsLinear& res)
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)
virtual void	TObject::RecursiveRemove(TObject* obj)
void	AliTrackResiduals::ReleaseParameter(Int_t par)
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)
virtual void	TObject::SetDrawOption(Option_t* option = "")MENU
static void	TObject::SetDtorOnly(void* obj)
void	AliTrackResiduals::SetMinNPoints(Int_t n)
void	AliTrackResiduals::SetNTracks(Int_t ntracks)
static void	TObject::SetObjectStat(Bool_t stat)
void	SetRobust(Float_t fraction)
virtual void	TObject::SetUniqueID(UInt_t uid)
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

protected:

void	AddPoints(AliTrackPoint& p, AliTrackPoint& pprime)
void	AliTrackResiduals::DeleteTrackPointArrays()
virtual void	TObject::DoError(int level, const char* location, const char* fmt, va_list va) const
void	TObject::MakeZombie()
Bool_t	Update()

Data Members

public:

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

protected:

AliAlignObj*	AliTrackResiduals::fAlignObj	Pointer to the volume alignment object to be fitted
Bool_t	AliTrackResiduals::fBFixed[6]	The flag for fixing parameter
Float_t	AliTrackResiduals::fChi2	Chi2 (or distance) of residuals minimization
Double_t	fChi2Orig	original chi2
Double_t	fCovar[36]	covariance matrix
TLinearFitter*	fFitter	!Linear fitter
Float_t	AliTrackResiduals::fFixed[6]	The fixed values of parameters
Float_t	fFraction	fraction of points for robust fitter if less 0 - no robust fitter invoked
Bool_t	AliTrackResiduals::fIsOwner	Track point arrays owned by the object
Int_t	AliTrackResiduals::fLast	Index of the last filled track arrays
Int_t	AliTrackResiduals::fMinNPoints	Minimum allowed Number of points in the volume which is to be aligned
Int_t	AliTrackResiduals::fN	Number of tracks
Int_t	AliTrackResiduals::fNdf	Number of degrees of freedom
Double_t	fParams[6]	resulting parameters
AliTrackPointArray**	AliTrackResiduals::fTrackArray	! Pointers to the arrays containing track extrapolation points
AliTrackPointArray**	AliTrackResiduals::fVolArray	! Pointers to the arrays containing space points

Class Charts

Inheritance Chart:

TObject

←

AliTrackResiduals

←

AliTrackResidualsLinear

Function documentation

AliTrackResidualsLinear()

 Default constructor

AliTrackResidualsLinear(Int_t ntracks)

 Constructor

AliTrackResidualsLinear(const AliTrackResidualsLinear& res)

 Copy constructor
..

AliTrackResidualsLinear & operator=(const AliTrackResidualsLinear& res)

 Assignment operator

~AliTrackResidualsLinear()

Bool_t Minimize()

 Implementation of fast linear Chi2 minimizer
 based on TLinear fitter

void AddPoints(AliTrackPoint& p, AliTrackPoint& pprime)

 add points to linear fitter - option with correlation betwee measurement in different dimensions
 p1      - local point
 pprime  - track extrapolation point

Bool_t Update()

 Find the alignment parameters
 using TLinear fitter  + fill data containers

void SetRobust(Float_t fraction)

{fFraction=fraction;}

const Double_t * GetParameters() const

{ return fParams;}

const Double_t * GetCovariance() const

{ return fCovar;}