PWG2/FLOW/AliFlowTasks/AliAnalysisTaskMixedHarmonics.cxx

   1 /*************************************************************************
   2 * Copyright(c) 1998-2008, ALICE Experiment at CERN, All rights reserved. *
   3 *                                                                        *
   4 * Author: The ALICE Off-line Project.                                    *
   5 * Contributors are mentioned in the code where appropriate.              *
   6 *                                                                        *
   7 * Permission to use, copy, modify and distribute this software and its   *
   8 * documentation strictly for non-commercial purposes is hereby granted   *
   9 * without fee, provided that the above copyright notice appears in all   *
  10 * copies and that both the copyright notice and this permission notice   *
  11 * appear in the supporting documentation. The authors make no claims     *
  12 * about the suitability of this software for any purpose. It is          *
  13 * provided "as is" without express or implied warranty.                  *
  14 **************************************************************************/
  15
  16 /**************************************
  17  * analysis task for mixed harmomics  *
  18  *                                    *
  19  * authors: Naomi van der Kolk        *
  20  *           (kolk@nikhef.nl)         *
  21  *          Raimond Snellings         *
  22  *           (snelling@nikhef.nl)     *
  23  *          Ante Bilandzic            *
  24  *           (anteb@nikhef.nl)        *
  25  * ***********************************/
  26
  27 class TFile;
  28 class TList;
  29 class AliAnalysisTaskSE;
  30
  31 #include "Riostream.h"
  32 #include "AliFlowEventSimple.h"
  33 #include "AliAnalysisTaskMixedHarmonics.h"
  34 #include "AliFlowAnalysisWithMixedHarmonics.h"
  35
  36 ClassImp(AliAnalysisTaskMixedHarmonics)
  37
  38 //================================================================================================================
  39
  40 AliAnalysisTaskMixedHarmonics::AliAnalysisTaskMixedHarmonics(const char *name, Bool_t useParticleWeights):
  41 AliAnalysisTaskSE(name),
  42 fEvent(NULL),
  43 fMH(NULL),
  44 fListHistos(NULL),
  45 fHarmonic(1),
  46 fNoOfMultipicityBins(100),
  47 fMultipicityBinWidth(1.),
  48 fMinMultiplicity(3.),
  49 fOppositeChargesPOI(kFALSE),
  50 fEvaluateDifferential3pCorrelator(kFALSE),
  51 fCorrectForDetectorEffects(kFALSE),
  52 fPrintOnTheScreen(kTRUE),
  53 fCalculateVsM(kFALSE),
  54 fShowBinLabelsVsM(kFALSE),
  55 fUseParticleWeights(useParticleWeights),
  56 fUsePhiWeights(kFALSE),
  57 fUsePtWeights(kFALSE),
  58 fUseEtaWeights(kFALSE),
  59 fWeightsList(NULL)
  60 {
  61  // constructor
  62  cout<<"AliAnalysisTaskMixedHarmonics::AliAnalysisTaskMixedHarmonics(const char *name, Bool_t useParticleWeights)"<<endl;
  63
  64  // Define input and output slots here
  65  // Input slot #0 works with an AliFlowEventSimple
  66  DefineInput(0, AliFlowEventSimple::Class());
  67  // Input slot #1 is needed for the weights input file:
  68  if(useParticleWeights)
  69  {
  70   DefineInput(1, TList::Class());
  71  }
  72  // Output slot #0 is reserved
  73  // Output slot #1 writes into a TList container
  74  DefineOutput(1, TList::Class());
  75 }
  76
  77 AliAnalysisTaskMixedHarmonics::AliAnalysisTaskMixedHarmonics():
  78 AliAnalysisTaskSE(),
  79 fEvent(NULL),
  80 fMH(NULL),
  81 fListHistos(NULL),
  82 fHarmonic(0),
  83 fNoOfMultipicityBins(0),
  84 fMultipicityBinWidth(0),
  85 fMinMultiplicity(0),
  86 fOppositeChargesPOI(kFALSE),
  87 fEvaluateDifferential3pCorrelator(kFALSE),
  88 fCorrectForDetectorEffects(kFALSE),
  89 fPrintOnTheScreen(kFALSE),
  90 fCalculateVsM(kFALSE),
  91 fShowBinLabelsVsM(kFALSE),
  92 fUseParticleWeights(kFALSE),
  93 fUsePhiWeights(kFALSE),
  94 fUsePtWeights(kFALSE),
  95 fUseEtaWeights(kFALSE),
  96 fWeightsList(NULL)
  97 {
  98  // Dummy constructor
  99  cout<<"AliAnalysisTaskMixedHarmonics::AliAnalysisTaskMixedHarmonics()"<<endl;
 100 }
 101
 102 //================================================================================================================
 103
 104 void AliAnalysisTaskMixedHarmonics::UserCreateOutputObjects()
 105 {
 106  // Called at every worker node to initialize
 107  cout<<"AliAnalysisTaskMixedHarmonics::UserCreateOutputObjects()"<<endl;
 108
 109  // Analyser:
 110  fMH = new AliFlowAnalysisWithMixedHarmonics();
 111
 112  // Common:
 113  fMH->SetHarmonic(fHarmonic);
 114  fMH->SetNoOfMultipicityBins(fNoOfMultipicityBins);
 115  fMH->SetMultipicityBinWidth(fMultipicityBinWidth);
 116  fMH->SetMinMultiplicity(fMinMultiplicity);
 117  fMH->SetOppositeChargesPOI(fOppositeChargesPOI);
 118  fMH->SetEvaluateDifferential3pCorrelator(fEvaluateDifferential3pCorrelator);
 119  fMH->SetCorrectForDetectorEffects(fCorrectForDetectorEffects);
 120  fMH->SetPrintOnTheScreen(fPrintOnTheScreen);
 121  fMH->SetCalculateVsM(fCalculateVsM);
 122  fMH->SetShowBinLabelsVsM(fShowBinLabelsVsM);
 123  if(fUseParticleWeights)
 124  {
 125   // Pass the flags to class:
 126   if(fUsePhiWeights) fMH->SetUsePhiWeights(fUsePhiWeights);
 127   if(fUsePtWeights) fMH->SetUsePtWeights(fUsePtWeights);
 128   if(fUseEtaWeights) fMH->SetUseEtaWeights(fUseEtaWeights);
 129   // Get data from input slot #1 which is used for weights:
 130   if(GetNinputs()==2)
 131   {
 132    fWeightsList = (TList*)GetInputData(1);
 133   }
 134   // Pass the list with weights to class:
 135   if(fWeightsList) fMH->SetWeightsList(fWeightsList);
 136  }
 137
 138  fMH->Init();
 139
 140  if(fMH->GetHistList())
 141  {
 142   fListHistos = fMH->GetHistList();
 143   // fListHistos->Print();
 144  } else
 145    {
 146     Printf("ERROR: Could not retrieve histogram list (MH, Task::UserCreateOutputObjects()) !!!!");
 147    }
 148
 149  PostData(1,fListHistos);
 150
 151 } // end of void AliAnalysisTaskMixedHarmonics::UserCreateOutputObjects()
 152
 153 //================================================================================================================
 154
 155 void AliAnalysisTaskMixedHarmonics::UserExec(Option_t *)
 156 {
 157  // main loop (called for each event)
 158  fEvent = dynamic_cast<AliFlowEventSimple*>(GetInputData(0));
 159
 160  // Mixed Harmonics:
 161  if(fEvent)
 162  {
 163   fMH->Make(fEvent);
 164  } else
 165    {
 166     cout<<"WARNING: No input data (MH, Task::UserExec()) !!!!"<<endl;
 167     cout<<endl;
 168    }
 169
 170  PostData(1,fListHistos);
 171 }
 172
 173 //================================================================================================================
 174
 175 void AliAnalysisTaskMixedHarmonics::Terminate(Option_t *)
 176 {
 177  //accessing the merged output list:
 178  fListHistos = (TList*)GetOutputData(1);
 179
 180  fMH = new AliFlowAnalysisWithMixedHarmonics();
 181
 182  if(fListHistos)
 183  {
 184   fMH->GetOutputHistograms(fListHistos);
 185   fMH->Finish();
 186   PostData(1,fListHistos);
 187  } else
 188    {
 189     cout<<" WARNING: histogram list pointer is empty (MH, Task::Terminate()) !!!!"<<endl;
 190     cout<<endl;
 191    }
 192
 193 } // end of void AliAnalysisTaskMixedHarmonics::Terminate(Option_t *)
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