spadicplugin/go4/TSpadicModel.h (r4864/r1179)

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#ifndef TSPADICMODEL_H
#define TSPADICMODEL_H

#include "TGo4FitModel.h"

#include "TMath.h"

class TSpadicModel : public TGo4FitModel {
   public:
      TSpadicModel(const char* iName):
         TGo4FitModel(iName, "Peak form", kTRUE) 
   {
     NewParameter("N","model template parameter",3.);
     NewParameter("Tau","model template parameter",10.);
     NewParameter("Shift","model template parameter",-20.);
   }


   protected:
      virtual Double_t UserFunction(Double_t* Coordinates, Double_t* Parameters) 
   {
     Double_t N = Parameters[0];
     Double_t Tau = Parameters[1];
     Double_t Shift = Parameters[2];
     Double_t x = Coordinates[0];

     if ((x-Shift) < 0) return 0;
     //return -1*TMath::Exp(-N*(x-Shift)/Tau)*TMath::Power((x-Shift)/Tau, N);
        return TMath::Exp(-N*(x-Shift)/Tau)*TMath::Power((x-Shift)/Tau, N);
}

   ClassDef(TSpadicModel, 1);
};

#endif // TMODELTEMPLATE_H