SctFitter::FitStrategy Class Reference

Motivated by the need to fitting rapidly, abstracted fit strategy allows different fit algorithms to be used. More...

#include <FitStrategy.h>

Inheritance diagram for SctFitter::FitStrategy:

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Public Member Functions
virtual void	fitTH1 (const TH1 &hist, TF1 &fit) const =0 throw (Sct::LogicError, Sct::MathsError)
	Fit Root TH1 using the current options.
virtual void	fitTGraph (const TGraph &graph, TF1 &fit) const =0 throw (Sct::LogicError, Sct::MathsError)
	Fit Root TGraph using the current options.
virtual void	fitTGraphErrors (const TGraphErrors &graph, TF1 &fit) const =0 throw (Sct::LogicError, Sct::MathsError)
	Fit Root TGraph using the current options.
virtual void	fitTGraphAsymmErrors (const TGraphAsymmErrors &graph, TF1 &fit) const =0 throw (Sct::LogicError, Sct::MathsError)
	Fit Root TGraph using the current options.
void	setOptions (string opt) throw ()
const string &	getOptions () const throw ()
virtual const string &	getName () const =0 throw ()
Protected Member Functions
	FitStrategy (string opt=string("")) throw ()
	Clients can make a FitStrategy Object.
virtual	~FitStrategy ()
	virtual destructor.
Private Attributes
string	options
	a string containing fit options for this strategy

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Detailed Description

Motivated by the need to fitting rapidly, abstracted fit strategy allows different fit algorithms to be used.

Allows easy switch from say ROOT fitting to a custom fitter. Concrete strategies should add themselves to the map using the addToMap function, at static initialization. It is assumed that:
o The histogram errors have been set
o The function limits have been set
o The histogram is truly a TH1 (not a silly ROOT TH2 which inherits from TH1!)

Author:

Alan Barr

Date:

17/5/03

Definition at line 29 of file FitStrategy.h.

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Constructor & Destructor Documentation

SctFitter::FitStrategy::FitStrategy (  string  opt = string("")  )  throw () [protected]

Clients can make a FitStrategy Object. Definition at line 20 of file FitStrategy.cpp.

SctFitter::FitStrategy::~FitStrategy (   )  [protected, virtual]

virtual destructor. Definition at line 14 of file FitStrategy.cpp.

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Member Function Documentation

virtual void SctFitter::FitStrategy::fitTGraph (  const TGraph &  graph, TF1 &  fit )  const throw (Sct::LogicError, Sct::MathsError) [pure virtual]

Fit Root TGraph using the current options. Parameters: hist  input histogram to be fitted fit  output Implemented in SctFitter::MinuitFitStrategy, SctFitter::NagFitStrategy, and SctFitter::RootFitStrategy. Referenced by SctAnalysis::NPtGainAlgorithm::doFit().

virtual void SctFitter::FitStrategy::fitTGraphAsymmErrors (  const TGraphAsymmErrors &  graph, TF1 &  fit )  const throw (Sct::LogicError, Sct::MathsError) [pure virtual]

Fit Root TGraph using the current options. Parameters: hist  input histogram to be fitted fit  output Implemented in SctFitter::MinuitFitStrategy, SctFitter::NagFitStrategy, and SctFitter::RootFitStrategy.

virtual void SctFitter::FitStrategy::fitTGraphErrors (  const TGraphErrors &  graph, TF1 &  fit )  const throw (Sct::LogicError, Sct::MathsError) [pure virtual]

Fit Root TGraph using the current options. Parameters: hist  input histogram to be fitted fit  output Implemented in SctFitter::MinuitFitStrategy, SctFitter::NagFitStrategy, and SctFitter::RootFitStrategy.

virtual void SctFitter::FitStrategy::fitTH1 (  const TH1 &  hist, TF1 &  fit )  const throw (Sct::LogicError, Sct::MathsError) [pure virtual]

Fit Root TH1 using the current options. Parameters: hist  input histogram to be fitted fit  output Implemented in SctFitter::MinuitFitStrategy, SctFitter::NagFitStrategy, and SctFitter::RootFitStrategy.

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Field Documentation

string SctFitter::FitStrategy::options [private]

a string containing fit options for this strategy Definition at line 69 of file FitStrategy.h. Referenced by getOptions(), and setOptions().

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

• FitStrategy.h
• FitStrategy.cpp

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