TGauss.h

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#ifndef TGAUSS_H
#define TGAUSS_H
 
/** \addtogroup Fitting Fitting & Analysis
 *  @{
 */
 
#include <cstdarg>
 
#include "TF1.h"
#include "TGraph.h"
 
#include "TSinglePeak.h"
 
/////////////////////////////////////////////////////////////////
///
/// \class TGauss
///
///  This class is used to fit simple gaussian peaks in data
///
/////////////////////////////////////////////////////////////////
 
class TGauss : public TSinglePeak {
public:
   // ctors and dtors
   TGauss() = default;
   explicit TGauss(Double_t centroid, Double_t relativeLimit = -1.);
   TGauss(const TGauss&)                = default;
   TGauss(TGauss&&) noexcept            = default;
   TGauss& operator=(const TGauss&)     = default;
   TGauss& operator=(TGauss&&) noexcept = default;
   ~TGauss()                            = default;
 
   void InitParNames() override;
   void InitializeParameters(TH1* hist, const double& rangeLow, const double& rangeHigh) override;
 
   void Centroid(const Double_t& centroid) override;
 
   Double_t Centroid() const override;
   Double_t CentroidErr() const override;
   Double_t Width() const override { return Sigma(); }
   Double_t Sigma() const override { return GetFitFunction()->GetParameter("sigma"); }
   Double_t SigmaErr() const override { return GetFitFunction()->GetParError(GetFitFunction()->GetParNumber("sigma")); }
 
protected:
   Double_t PeakFunction(Double_t* dim, Double_t* par) override;
 
public:
   /// \cond CLASSIMP
   ClassDefOverride(TGauss, 2)   // NOLINT(readability-else-after-return)
   /// \endcond
};
/*! @} */
#endif