TFitter
class description - source file - inheritance tree
public:
TFitter TFitter(Int_t maxpar = 25)
TFitter TFitter(TFitter&)
virtual void ~TFitter()
static TClass* Class()
virtual void Clear(Option_t* option)
virtual Int_t ExecuteCommand(const char* command, Double_t* args, Int_t nargs)
virtual void FixParameter(Int_t ipar)
virtual Int_t GetErrors(Int_t ipar, Double_t& eplus, Double_t& eminus, Double_t& eparab, Double_t& globcc)
virtual TObject* GetObjectFit() const
virtual Int_t GetParameter(Int_t ipar, char* name, Double_t& value, Double_t& verr, Double_t& vlow, Double_t& vhigh)
virtual Int_t GetStats(Double_t& amin, Double_t& edm, Double_t& errdef, Int_t& nvpar, Int_t& nparx)
virtual Double_t GetSumLog(Int_t i)
virtual TClass* IsA() const
virtual void PrintResults(Int_t level, Double_t amin) const
virtual void ReleaseParameter(Int_t ipar)
virtual void SetFCN(void* fcn)
virtual void SetFCN(void (*)(Int_t&, Double_t*, Double_t&f, Double_t*, Int_t) fcn)
virtual void SetObjectFit(TObject* obj)
virtual Int_t SetParameter(Int_t ipar, const char* parname, Double_t value, Double_t verr, Double_t vlow, Double_t vhigh)
virtual void ShowMembers(TMemberInspector& insp, char* parent)
virtual void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
private:
Int_t fNlog Number of elements in fSunLog
Double_t* fSumLog Sum of logs (array of fNlog elements)
TFitter(Int_t maxpar)
*-*-*-*-*-*-*-*-*-*-*default constructor*-*-*-*-*-*-*-*-*-*-*-*-*
*-* ===================
~TFitter()
*-*-*-*-*-*-*-*-*-*-*default destructor*-*-*-*-*-*-*-*-*-*-*-*-*-*
*-* ==================
void Clear(Option_t *)
reset the fitter environment
Int_t ExecuteCommand(const char *command, Double_t *args, Int_t nargs)
Execute a fitter command;
command : command string
args : list of nargs command arguments
void FixParameter(Int_t ipar)
Fix parameter ipar.
Int_t GetErrors(Int_t ipar,Double_t &eplus, Double_t &eminus, Double_t &eparab, Double_t &globcc)
return current errors for a parameter
ipar : parameter number
eplus : upper error
eminus : lower error
eparab : parabolic error
globcc : global correlation coefficient
TObject* GetObjectFit() const
return a pointer to the current object being fitted
Int_t GetParameter(Int_t ipar,char *parname,Double_t &value,Double_t &verr,Double_t &vlow, Double_t &vhigh)
return current values for a parameter
ipar : parameter number
parname : parameter name
value : initial parameter value
verr : initial error for this parameter
vlow : lower value for the parameter
vhigh : upper value for the parameter
Int_t GetStats(Double_t &amin, Double_t &edm, Double_t &errdef, Int_t &nvpar, Int_t &nparx)
return global fit parameters
amin
edm : estimated distance to minimum
errdef
nvpar : number of variable parameters
nparx : total number of parameters
Double_t GetSumLog(Int_t n)
return Sum(log(i) i=0,n
used by log likelihood fits
void PrintResults(Int_t level, Double_t amin) const
Print fit results
void ReleaseParameter(Int_t ipar)
Release parameter ipar.
void SetFCN(void *fcn)
Specify the address of the fitting algorithm (from the interpreter)
void SetFCN(void (*fcn)(Int_t &, Double_t *, Double_t &f, Double_t *, Int_t))
Specify the address of the fitting algorithm
void SetObjectFit(TObject *obj)
Specify the current object to be fitted
Int_t SetParameter(Int_t ipar,const char *parname,Double_t value,Double_t verr,Double_t vlow, Double_t vhigh)
set initial values for a parameter
ipar : parameter number
parname : parameter name
value : initial parameter value
verr : initial error for this parameter
vlow : lower value for the parameter
vhigh : upper value for the parameter
Inline Functions
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
TFitter TFitter(TFitter&)
Author: Rene Brun 31/08/99
Last update: root/minuit:$Name: $:$Id: TFitter.cxx,v 1.2 2000/12/13 15:13:52 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
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