4 // Copyright(c) 2003, IceCube Experiment at the South Pole, All rights reserved.
5 // See cxx source for full Copyright notice.
12 #include "TObjString.h"
15 #include "Math/SpecFuncMathMore.h"
18 #include "AliSample.h"
22 class IceChi2 : public TTask
25 IceChi2(const char* name="",const char* title=""); // Constructor
26 virtual ~IceChi2(); // Destructor
27 virtual void Exec(Option_t* opt); // Perform the fitting procedure
28 void SetPrintLevel(Int_t level); // Set the fitter (Minuit) printlevel
29 void UseTracks(TString classname,Int_t n=-1); // Specify first guess tracks to be used
30 void SelectHits(Int_t mode=1); // Specify which hits to be used
31 void SetVgroupUsage(Int_t flag); // (De)activate usage of distinct phase and group velocities
32 void SetTrackName(TString s); // Set (alternative) name for the produced tracks
33 void SetCharge(Float_t charge);// Set user defined charge for the produced tracks
34 void SetPenalty(Float_t val); // Set psi penalty value (dB) for extreme distance and/or time values
35 Double_t GetPsi(AliTrack* t); // Provide Bayesian psi value for a track w.r.t. CPandel PDF
36 void FitFCN(Int_t&,Double_t*,Double_t&,Double_t*,Int_t); // The minimisation FCN
39 Int_t fFirst; // Flag to denote first invokation of the processor
40 Int_t fPrint; // Flag to denote the fitter (Minuit) printlevel
41 Int_t fSelhits; // Flag to denote which hits to be used
42 Int_t fVgroup; // Flag to indicate usage of distinct phase and group velocities
43 IceEvent* fEvt; // Pointer to the current event structure
44 TObjArray* fUseNames; // The first guess classnames to be used
45 TArrayI* fUseNtk; // The max. numbers of the various first guess tracks to be used
46 TObjArray* fHits; // The various hits to be used in the fitting process
47 TFitter* fFitter; // Pointer to the minimisation processor
48 TString fTrackname; // The name identifier for the produced tracks
49 Float_t fCharge; // User defined charge of the produced tracks
50 Float_t fPenalty; // User defined psi penalty value (dB) for extreme distance and/or time values
51 AliTrack* fTkfit; // Pointer to the produced fitted track
52 AliSignal* fFitstats; // The fit details of the produced fitted track
53 AliSample fPsistats; // Statistics of the Bayesian psi value for the best fitted track
55 ClassDef(IceChi2,2) // TTask derived class to perform Chi-squared track fitting