gistfile1.py

import ROOT

ROOT.gSystem.Load("libEXOROOT")

class model:
   def __init__(self,RC_tau_1,RC_tau_2,CR_tau_1,CR_tau_2,CR_tau_3,baseline,lower_range,upper_range,size):
      self.function = ROOT.TF1('function',self,lower_range,upper_range,size)
      self.function.SetParName(0, 'number of signals')
      self.cm = ROOT.EXOChannelManager()
      self.cm.initialize(RC_tau_1,RC_tau_2,CR_tau_1,CR_tau_2,CR_tau_3)
      self.cm.set_baseline(baseline)

   def __call__(self, t, par):
      val = 0.0
      try:
         val = self.cm.signal_sum(t,par)
      except OverflowError:
         return 0.0
      return val

   def GetTF1(self):
      return self.function

amodel = model( 0.1, 
                0.1,
                0.1,
                0.1,
                0.1,
                0.1,
                0.1,
                0.1,
                3)