TPeakFitter Class Reference

This class is used to fit things that resemble "peaks" in data

Definition at line 31 of file TPeakFitter.h.

Public Member Functions
	TPeakFitter ()
	TPeakFitter (const Double_t &range_low, const Double_t &range_high)
	~TPeakFitter () override
void	AddPeak (TSinglePeak *p)
void	DrawPeaks (Option_t *="") const
void	Fit (TH1 *fit_hist, Option_t *opt="")
TF1 *	GetBackground ()
TF1 *	GetFitFunction ()
Int_t	GetNParameters () const
void	InitializeBackgroundParameters (TH1 *fit_hist)
void	InitializeParameters (TH1 *fit_hist)
virtual void	Print (Option_t *opt="") const override
void	PrintParameters () const
void	RemoveAllPeaks ()
void	RemovePeak (TSinglePeak *p)
void	ResetInitFlag ()
void	SetBackground (TF1 *bg_to_fit)
void	SetIndex (const int &index)
void	SetRange (const Double_t &low, const Double_t &high)

Private Member Functions
Double_t	BackgroundFunction (Double_t *dim, Double_t *par)
Double_t	DefaultBackgroundFunction (Double_t *dim, Double_t *par)
Double_t	FitFunction (Double_t *dim, Double_t *par)
void	UpdateFitterParameters ()
void	UpdatePeakParameters (const TFitResultPtr &fit_res, TH1 *fit_hist)

Private Attributes
TF1 *	fBGToFit {nullptr}
int	fIndex {0}
bool	fInitFlag {false}
TH1 *	fLastHistFit {nullptr}
MultiplePeak_t	fPeaksToFit
Double_t	fRangeHigh
Double_t	fRangeLow
TF1 *	fTotalFitFunction {nullptr}

#include <TPeakFitter.h>

Inheritance diagram for TPeakFitter:

Collaboration diagram for TPeakFitter:

Constructor & Destructor Documentation

~TPeakFitter()

TPeakFitter::~TPeakFitter ( )

inlineoverride

Definition at line 34 of file TPeakFitter.h.

TPeakFitter() [1/2]

TPeakFitter::TPeakFitter

(

)

Definition at line 12 of file TPeakFitter.cxx.

References DefaultBackgroundFunction().

TPeakFitter() [2/2]

TPeakFitter::TPeakFitter	(	const Double_t &	range_low,
		const Double_t &	range_high
	)

Definition at line 20 of file TPeakFitter.cxx.

References fRangeHigh, and fRangeLow.

Member Function Documentation

AddPeak()

void TPeakFitter::AddPeak ( TSinglePeak *  p )

inline

Definition at line 39 of file TPeakFitter.h.

References fPeaksToFit.

Referenced by TBGSubtraction::PeakComboSelected().

BackgroundFunction()

Double_t TPeakFitter::BackgroundFunction ( Double_t *  dim, Double_t *  par  )

private

Definition at line 325 of file TPeakFitter.cxx.

References fBGToFit, and fPeaksToFit.

Referenced by UpdatePeakParameters().

DefaultBackgroundFunction()

Double_t TPeakFitter::DefaultBackgroundFunction ( Double_t *  dim, Double_t *  par  )

private

Definition at line 380 of file TPeakFitter.cxx.

Referenced by TPeakFitter().

DrawPeaks()

void TPeakFitter::DrawPeaks

(

Option_t *

= ""

)

const

Definition at line 392 of file TPeakFitter.cxx.

References fIndex, fPeaksToFit, and fTotalFitFunction.

Fit()

void TPeakFitter::Fit	(	TH1 *	fit_hist,
		Option_t *	opt = ""
	)

Fit the histogram. Recognized options are "q" for a quiet fit, "retryfit" to retry a fit without parameter limits if one of the parameters got close to its limit. All options (apart from "retryfit") are passed on to the actual call to TH1::Fit.

Definition at line 84 of file TPeakFitter.cxx.

References TGRSIFunctions::CheckParameterErrors(), fIndex, fInitFlag, FitFunction(), fLastHistFit, fPeaksToFit, fRangeHigh, fRangeLow, fTotalFitFunction, GetNParameters(), GREEN, InitializeBackgroundParameters(), InitializeParameters(), Print(), PrintParameters(), RED, RESET_COLOR, UpdateFitterParameters(), UpdatePeakParameters(), and YELLOW.

Referenced by TBGSubtraction::DoPeakFit().

FitFunction()

Double_t TPeakFitter::FitFunction ( Double_t *  dim, Double_t *  par  )

private

Definition at line 309 of file TPeakFitter.cxx.

References fBGToFit, and fPeaksToFit.

Referenced by Fit().

GetBackground()

TF1* TPeakFitter::GetBackground ( )

inline

Definition at line 50 of file TPeakFitter.h.

References fBGToFit.

GetFitFunction()

TF1* TPeakFitter::GetFitFunction ( )

inline

Definition at line 51 of file TPeakFitter.h.

References fTotalFitFunction.

GetNParameters()

Int_t TPeakFitter::GetNParameters

(

)

const

Definition at line 67 of file TPeakFitter.cxx.

References fBGToFit, and fPeaksToFit.

Referenced by Fit().

InitializeBackgroundParameters()

void TPeakFitter::InitializeBackgroundParameters

(

TH1 *

fit_hist

)

Definition at line 340 of file TPeakFitter.cxx.

References fBGToFit, fPeaksToFit, fRangeHigh, and fRangeLow.

Referenced by Fit().

InitializeParameters()

void TPeakFitter::InitializeParameters

(

TH1 *

fit_hist

)

Definition at line 268 of file TPeakFitter.cxx.

References fPeaksToFit.

Referenced by Fit().

Print()

void TPeakFitter::Print ( Option_t *  opt = "" ) const

overridevirtual

Print information from the fit, opt is passed along to each individual peaks Print function.

Definition at line 26 of file TPeakFitter.cxx.

References fBGToFit, fPeaksToFit, fRangeHigh, fRangeLow, and fTotalFitFunction.

Referenced by Fit().

PrintParameters()

void TPeakFitter::PrintParameters

(

)

const

Print the range of the fit and the parameters of each peak on a single line.

Definition at line 55 of file TPeakFitter.cxx.

References fPeaksToFit, fRangeHigh, and fRangeLow.

Referenced by Fit().

RemoveAllPeaks()

void TPeakFitter::RemoveAllPeaks ( )

inline

Definition at line 41 of file TPeakFitter.h.

References fPeaksToFit.

RemovePeak()

void TPeakFitter::RemovePeak ( TSinglePeak *  p )

inline

Definition at line 40 of file TPeakFitter.h.

References fPeaksToFit.

Referenced by TBGSubtraction::PeakComboSelected().

ResetInitFlag()

void TPeakFitter::ResetInitFlag ( )

inline

Definition at line 57 of file TPeakFitter.h.

References fInitFlag.

Referenced by TBGSubtraction::DoPeakFit(), and TBGSubtraction::PeakComboSelected().

SetBackground()

void TPeakFitter::SetBackground ( TF1 *  bg_to_fit )

inline

Definition at line 43 of file TPeakFitter.h.

References fBGToFit.

SetIndex()

void TPeakFitter::SetIndex ( const int &  index )

inline

Definition at line 59 of file TPeakFitter.h.

References fIndex.

SetRange()

void TPeakFitter::SetRange	(	const Double_t &	low,
		const Double_t &	high
	)

Definition at line 78 of file TPeakFitter.cxx.

References fRangeHigh, and fRangeLow.

Referenced by TBGSubtraction::DoPeakFit().

UpdateFitterParameters()

void TPeakFitter::UpdateFitterParameters ( )

private

This functions gets the parameters and their limits from the peak functions and sets them for the total fit function

Definition at line 275 of file TPeakFitter.cxx.

References fBGToFit, fPeaksToFit, and fTotalFitFunction.

Referenced by Fit().

UpdatePeakParameters()

void TPeakFitter::UpdatePeakParameters ( const TFitResultPtr &  fit_res, TH1 *  fit_hist  )

private

Definition at line 177 of file TPeakFitter.cxx.

References BackgroundFunction(), fBGToFit, fPeaksToFit, fRangeHigh, fRangeLow, and fTotalFitFunction.

Referenced by Fit().

Member Data Documentation

fBGToFit

TF1* TPeakFitter::fBGToFit {nullptr}

private

Definition at line 69 of file TPeakFitter.h.

Referenced by BackgroundFunction(), FitFunction(), GetBackground(), GetNParameters(), InitializeBackgroundParameters(), Print(), SetBackground(), UpdateFitterParameters(), and UpdatePeakParameters().

fIndex

int TPeakFitter::fIndex {0}

private

this index is added to the colors kRed for the total function and kMagenta for the individual peaks

Definition at line 83 of file TPeakFitter.h.

Referenced by DrawPeaks(), Fit(), and SetIndex().

fInitFlag

bool TPeakFitter::fInitFlag {false}

private

Definition at line 79 of file TPeakFitter.h.

Referenced by Fit(), and ResetInitFlag().

fLastHistFit

TH1* TPeakFitter::fLastHistFit {nullptr}

private

Definition at line 81 of file TPeakFitter.h.

Referenced by Fit().

fPeaksToFit

MultiplePeak_t TPeakFitter::fPeaksToFit

private

Definition at line 68 of file TPeakFitter.h.

Referenced by AddPeak(), BackgroundFunction(), DrawPeaks(), Fit(), FitFunction(), GetNParameters(), InitializeBackgroundParameters(), InitializeParameters(), Print(), PrintParameters(), RemoveAllPeaks(), RemovePeak(), UpdateFitterParameters(), and UpdatePeakParameters().

fRangeHigh

Double_t TPeakFitter::fRangeHigh

private

Definition at line 74 of file TPeakFitter.h.

Referenced by Fit(), InitializeBackgroundParameters(), Print(), PrintParameters(), SetRange(), TPeakFitter(), and UpdatePeakParameters().

fRangeLow

Double_t TPeakFitter::fRangeLow

private

Definition at line 73 of file TPeakFitter.h.

Referenced by Fit(), InitializeBackgroundParameters(), Print(), PrintParameters(), SetRange(), TPeakFitter(), and UpdatePeakParameters().

fTotalFitFunction

TF1* TPeakFitter::fTotalFitFunction {nullptr}

private

Definition at line 71 of file TPeakFitter.h.

Referenced by DrawPeaks(), Fit(), GetFitFunction(), Print(), UpdateFitterParameters(), and UpdatePeakParameters().