[u/mrichter/AliRoot.git] / PWG1 / AliComparisonDEdx.cxx

//------------------------------------------------------------------------------
// Implementation of AliComparisonDEdx class. It keeps information from 
// comparison of reconstructed and MC particle tracks. In addtion, 
// it keeps selection cuts used during comparison. The comparison 
// information is stored in the ROOT histograms. Analysis of these 
// histograms can be done by using Analyse() class function. The result of 
// the analysis (histograms/graphs) are stored in the folder which is 
// a data of AliComparisonDEdx.
//  
// Author: J.Otwinowski 04/02/2008 
//------------------------------------------------------------------------------

/*
 
  // after running comparison task, read the file, and get component
  gROOT->LoadMacro("$ALICE_ROOT/PWG1/Macros/LoadMyLibs.C");
  LoadMyLibs();
  TFile f("Output.root");
  AliComparisonDEdx * compObj = (AliComparisonDEdx*)f.Get("AliComparisonDEdx");

  // Analyse comparison data
  compObj->Analyse();

  // the output histograms/graphs will be stored in the folder "folderDEdx" 
  compObj->GetAnalysisFolder()->ls("*");

  // user can save whole comparison object (or only folder with anlysed histograms) 
  // in the seperate output file (e.g.)
  TFile fout("Analysed_DEdx.root"."recreate");
  compObj->Write(); // compObj->GetAnalysisFolder()->Write();
  fout.Close();

*/

#include <iostream>

#include "TFile.h"
#include "TCint.h"
#include "TH3F.h"
#include "TH2F.h"
#include "TF1.h"
#include "TProfile.h"
#include "TProfile2D.h"
#include "TGraph2D.h"
#include "TCanvas.h"
#include "TGraph.h"
//
#include "AliESDEvent.h"
#include "AliESD.h"
#include "AliESDfriend.h"
#include "AliESDfriendTrack.h"
#include "AliRecInfoCuts.h" 
#include "AliMCInfoCuts.h" 
#include "AliLog.h" 
//
#include "AliMathBase.h"
#include "AliTreeDraw.h"
//#include "TStatToolkit.h"

#include "AliMCInfo.h" 
#include "AliESDRecInfo.h" 
#include "AliComparisonDEdx.h" 

using namespace std;

ClassImp(AliComparisonDEdx)

//_____________________________________________________________________________
AliComparisonDEdx::AliComparisonDEdx():
//  TNamed("AliComparisonDEdx","AliComparisonDEdx"),
  AliComparisonObject("AliComparisonDEdx"),

  // dEdx 
  fTPCSignalNormTan(0), 
  fTPCSignalNormSPhi(0),
  fTPCSignalNormTPhi(0), 
  //
  fTPCSignalNormTanSPhi(0),
  fTPCSignalNormTanTPhi(0),
  fTPCSignalNormTanSPt(0), 
  
  // Cuts 
  fCutsRC(0), 
  fCutsMC(0),
  fMCPtMin(0),
  fMCAbsTanThetaMax(0),
  fMCPdgCode(0),

  // histogram folder 
  fAnalysisFolder(0)
{
  Init();
}

//_____________________________________________________________________________
AliComparisonDEdx::~AliComparisonDEdx(){
   
  if(fTPCSignalNormTan)  delete fTPCSignalNormTan; fTPCSignalNormTan=0; 
  if(fTPCSignalNormSPhi) delete fTPCSignalNormSPhi; fTPCSignalNormSPhi=0;
  if(fTPCSignalNormTPhi) delete fTPCSignalNormTPhi; fTPCSignalNormTPhi=0;
  //
  if(fTPCSignalNormTanSPhi) delete fTPCSignalNormTanSPhi; fTPCSignalNormTanSPhi=0;
  if(fTPCSignalNormTanTPhi) delete fTPCSignalNormTanTPhi; fTPCSignalNormTanTPhi=0;
  if(fTPCSignalNormTanSPt)  delete fTPCSignalNormTanSPt; fTPCSignalNormTanSPt=0;

  if(fAnalysisFolder) delete fAnalysisFolder; fAnalysisFolder=0;
}

//_____________________________________________________________________________
void AliComparisonDEdx::Init()
{
  // Init histograms
  
  // TPC dEdx
  fTPCSignalNormTan = new TH2F("CdEdxTan","CdEdxTan",50, -2,2,  40,30,70); 
  fTPCSignalNormTan->SetXTitle("tan(#theta)");
  fTPCSignalNormTan->SetYTitle("rec. dE/dx / calc. dE/dx");

  fTPCSignalNormSPhi   = new TH2F("CdEdxSPhi","CdEdxSPhi",10,0.0,1,40,30,70);
  fTPCSignalNormSPhi->SetXTitle("sin(#phi)");
  fTPCSignalNormSPhi->SetYTitle("rec. dE/dx / calc. dE/dx");

  fTPCSignalNormTPhi   = new TH2F("CdEdxTPhi","CdEdxTPhi",10,0.0,2,40,30,70); 
  fTPCSignalNormTPhi->SetXTitle("tan(#phi)");
  fTPCSignalNormTPhi->SetYTitle("rec. dE/dx / calc. dE/dx");

  fTPCSignalNormTanSPhi= new TH3F("CdEdxTanSPhi","CdEdxTanSPhi",20, -2,2, 10,0.0 ,1,  40,30,70);
  fTPCSignalNormTanSPhi->SetXTitle("tan(#theta)");
  fTPCSignalNormTanSPhi->SetYTitle("sin(#phi)");
  fTPCSignalNormTanSPhi->SetZTitle("rec. dE/dx / calc. dE/dx");

  fTPCSignalNormTanTPhi= new TH3F("CdEdxTanTPhi","CdEdxTanTPhi",20, -2,2, 10,0.0 ,1,  40,30,70);
  fTPCSignalNormTanTPhi->SetXTitle("tan(#theta)");
  fTPCSignalNormTanTPhi->SetYTitle("tan(#phi)");
  fTPCSignalNormTanTPhi->SetZTitle("rec. dE/dx / calc. dE/dx");

  fTPCSignalNormTanSPt= new TH3F("CdEdxTanSPt","CdEdxTanSPt",20, -2,2, 10,0.3 ,3, 40,30,70); 
  fTPCSignalNormTanSPt->SetXTitle("tan(#theta)");
  fTPCSignalNormTanSPt->SetYTitle("#sqrt{p_{t}}");
  fTPCSignalNormTanSPt->SetZTitle("rec. dE/dx / calc. dE/dx");

  // Init cuts
  if(!fCutsMC) 
    AliDebug(AliLog::kError, "ERROR: Cannot find AliMCInfoCuts object");
  if(!fCutsRC) 
    AliDebug(AliLog::kError, "ERROR: Cannot find AliRecInfoCuts object");

    // init folder
    fAnalysisFolder = CreateFolder("folderDEdx","Analysis de/dx Folder");
}

//_____________________________________________________________________________
void AliComparisonDEdx::Process(AliMCInfo* infoMC, AliESDRecInfo *infoRC){

  // Fill dE/dx  comparison information
  
  Float_t mcpt = infoMC->GetParticle().Pt();
  Float_t tantheta = TMath::Tan(infoMC->GetParticle().Theta()-TMath::Pi()*0.5);
  Float_t mprim = infoMC->GetPrim();

  // distance to Prim. vertex 
  const Double_t* dv = infoMC->GetVDist(); 

  Bool_t isPrim = TMath::Sqrt(dv[0]*dv[0] + dv[1]*dv[1])<fCutsMC->GetMaxR() && TMath::Abs(dv[2])<fCutsMC->GetMaxVz();
  
  // Check selection cuts 
  if (fCutsMC->IsPdgParticle(TMath::Abs(infoMC->GetParticle().GetPdgCode())) == kFALSE) return; 
  if (!isPrim) return;
  if (infoRC->GetStatus(1)!=3) return;
  if (!infoRC->GetESDtrack()) return;  
  if (infoRC->GetESDtrack()->GetTPCNcls()<fCutsRC->GetMinNClustersTPC()) return;
  if (!infoRC->GetESDtrack()->GetConstrainedParam()) return;
  //if (mprim>1.4) return;
  //if (mprim<0.5) return;
  if (mprim > fCutsMC->GetMaxTPCSignal()) return;
  if (mprim < fCutsMC->GetMinTPCSignal()) return;
  if (infoRC->GetESDtrack()->GetTPCsignalN()<fCutsRC->GetMinTPCsignalN()) return;
  //
  Float_t ratio = infoRC->GetESDtrack()->GetTPCsignal()/infoMC->GetPrim();
  Float_t sphi =  infoRC->GetESDtrack()->GetInnerParam()->GetSnp();
  Float_t tphi =  sphi/TMath::Sqrt(1-sphi*sphi);

  if (TMath::Abs(infoMC->GetParticle().GetPdgCode()) != GetMCPdgCode()) return;
  //if (mcpt>0.5) {
  if (mcpt > GetMCPtMin()) {
    fTPCSignalNormTan->Fill(tantheta,ratio);    // only subset
  }

  //if (TMath::Abs(tantheta)<0.5){
  if (TMath::Abs(tantheta) < GetMCAbsTanThetaMax()){
    fTPCSignalNormSPhi->Fill(sphi,ratio);       // only subset
    fTPCSignalNormTPhi->Fill(tphi,ratio);       // only subset
  }
  fTPCSignalNormTanSPhi->Fill(tantheta,sphi,ratio);    
  fTPCSignalNormTanTPhi->Fill(tantheta,tphi,ratio);    
  fTPCSignalNormTanSPt->Fill(tantheta,TMath::Sqrt(mcpt),ratio);
}

//_____________________________________________________________________________
Long64_t AliComparisonDEdx::Merge(TCollection* list) 
{
  // Merge list of objects (needed by PROOF)

  if (!list)
  return 0;

  if (list->IsEmpty())
  return 1;

  TIterator* iter = list->MakeIterator();
  TObject* obj = 0;

  // collection of generated histograms
  Int_t count=0;
  while((obj = iter->Next()) != 0) 
  {
    AliComparisonDEdx* entry = dynamic_cast<AliComparisonDEdx*>(obj);
    if (entry == 0) continue;

    fTPCSignalNormTan->Add(entry->fTPCSignalNormTan);
    fTPCSignalNormSPhi->Add(entry->fTPCSignalNormSPhi);
    fTPCSignalNormTPhi->Add(entry->fTPCSignalNormTPhi);
    //
    fTPCSignalNormTanSPhi->Add(entry->fTPCSignalNormTanSPhi);
    fTPCSignalNormTanTPhi->Add(entry->fTPCSignalNormTanTPhi);
    fTPCSignalNormTanSPt->Add(entry->fTPCSignalNormTanSPt);

    count++;
  }

return count;
}

//_____________________________________________________________________________
void AliComparisonDEdx::Exec(AliMCInfo* infoMC, AliESDRecInfo *infoRC)
{
  // Process comparison information
  Process(infoMC,infoRC);
}

//_____________________________________________________________________________
TH1F* AliComparisonDEdx::MakeResol(TH2F * his, Int_t integ, Bool_t type)
{
  // Make resolution histograms
  TH1F *hisr, *hism;
  if (!gPad) new TCanvas;
  hisr = AliTreeDraw::CreateResHistoI(his,&hism,integ);
  if (type) return hism;
  else 
    return hisr;
}

//_____________________________________________________________________________
void AliComparisonDEdx::Analyse()
{
  // Analyze comparison information and store output histograms
  // in the folder "folderDEdx"
  //

  TH1::AddDirectory(kFALSE);
  
  AliComparisonDEdx * comp=this;
  TObjArray *aFolderObj = new TObjArray;

  TH1F *hiss=0;
  TGraph2D * gr=0;

  // write results in the folder 
  TCanvas * c = new TCanvas("can","TPC dedx");
  c->cd();

  hiss = comp->MakeResol(comp->fTPCSignalNormTan,4,0);
  hiss->SetXTitle("Tan(#theta)");
  hiss->SetYTitle("#sigma_{dEdx}");
  hiss->Draw();
  hiss->SetName("TPCdEdxResolTan");

  aFolderObj->Add(hiss);
  //
  hiss = comp->MakeResol(comp->fTPCSignalNormTan,4,1); 
  hiss->SetXTitle("Tan(#theta)");
  hiss->SetYTitle("<dEdx>");
  hiss->Draw(); 
  hiss->SetName("TPCdEdxMeanTan");

  aFolderObj->Add(hiss);
  //
  gr = AliMathBase::MakeStat2D(comp->fTPCSignalNormTanSPt,3,1,4);
  gr->GetXaxis()->SetTitle("Tan(#theta)");
  gr->GetYaxis()->SetTitle("#sqrt{p_{t}(GeV)}");
  gr->GetZaxis()->SetTitle("<dEdx>");
  gr->SetName("TPCdEdxMeanTanPt_1");
  gr->GetHistogram()->Draw("colz"); 

  gr->GetHistogram()->SetName("TPCdEdxMeanTanPt_1");
  aFolderObj->Add(gr->GetHistogram());
  //
  gr = AliMathBase::MakeStat2D(comp->fTPCSignalNormTanSPt,3,1,5);
  gr->GetXaxis()->SetTitle("Tan(#theta)");
  gr->GetYaxis()->SetTitle("#sqrt{p_{t}(GeV)}");
  gr->GetZaxis()->SetTitle("#sigma_{dEdx}");
  gr->SetName("TPCdEdxMeanTanPt_2");
  gr->GetHistogram()->Draw("colz"); 

  gr->GetHistogram()->SetName("TPCdEdxMeanTanPt_2");
  aFolderObj->Add(gr->GetHistogram());

  // export objects to analysis folder
  fAnalysisFolder = ExportToFolder(aFolderObj);

  // delete only TObjrArray
  if(aFolderObj) delete aFolderObj;
}

//_____________________________________________________________________________
TFolder* AliComparisonDEdx::ExportToFolder(TObjArray * array) 
{
  // recreate folder avery time and export objects to new one
  //
  AliComparisonDEdx * comp=this;
  TFolder *folder = comp->GetAnalysisFolder();

  TString name, title;
  TFolder *newFolder = 0;
  Int_t i = 0;
  Int_t size = array->GetSize();

  if(folder) { 
     // get name and title from old folder
     name = folder->GetName();  
     title = folder->GetTitle();  

	 // delete old one
     delete folder;

	 // create new one
     newFolder = CreateFolder(name.Data(),title.Data());
     newFolder->SetOwner();

	 // add objects to folder
     while(i < size) {
	   newFolder->Add(array->At(i));
	   i++;
	 }
  }

return newFolder;
}


//_____________________________________________________________________________
TFolder* AliComparisonDEdx::CreateFolder(TString name,TString title) { 
// create folder for analysed histograms
TFolder *folder = 0;
  folder = new TFolder(name.Data(),title.Data());

  return folder;
}
Commit	Line	Data
3baa4bfd	1	//------------------------------------------------------------------------------
	2	// Implementation of AliComparisonDEdx class. It keeps information from
	3	// comparison of reconstructed and MC particle tracks. In addtion,
	4	// it keeps selection cuts used during comparison. The comparison
	5	// information is stored in the ROOT histograms. Analysis of these
	6	// histograms can be done by using Analyse() class function. The result of
	7	// the analysis (histograms/graphs) are stored in the folder which is
	8	// a data of AliComparisonDEdx.
	9	//
	10	// Author: J.Otwinowski 04/02/2008
	11	//------------------------------------------------------------------------------
	12
	13	/*
	14
	15	// after running comparison task, read the file, and get component
b4126c69	16	gROOT->LoadMacro("$ALICE_ROOT/PWG1/Macros/LoadMyLibs.C");
b4126c69	17	LoadMyLibs();
3baa4bfd	18	TFile f("Output.root");
	19	AliComparisonDEdx * compObj = (AliComparisonDEdx*)f.Get("AliComparisonDEdx");
	20
b4126c69	21	// Analyse comparison data
3baa4bfd	22	compObj->Analyse();
	23
	24	// the output histograms/graphs will be stored in the folder "folderDEdx"
	25	compObj->GetAnalysisFolder()->ls("*");
	26
	27	// user can save whole comparison object (or only folder with anlysed histograms)
	28	// in the seperate output file (e.g.)
	29	TFile fout("Analysed_DEdx.root"."recreate");
	30	compObj->Write(); // compObj->GetAnalysisFolder()->Write();
	31	fout.Close();
	32
	33	*/
	34
	35	#include <iostream>
	36
	37	#include "TFile.h"
	38	#include "TCint.h"
	39	#include "TH3F.h"
	40	#include "TH2F.h"
	41	#include "TF1.h"
	42	#include "TProfile.h"
	43	#include "TProfile2D.h"
	44	#include "TGraph2D.h"
	45	#include "TCanvas.h"
	46	#include "TGraph.h"
	47	//
	48	#include "AliESDEvent.h"
	49	#include "AliESD.h"
	50	#include "AliESDfriend.h"
	51	#include "AliESDfriendTrack.h"
	52	#include "AliRecInfoCuts.h"
	53	#include "AliMCInfoCuts.h"
	54	#include "AliLog.h"
	55	//
	56	#include "AliMathBase.h"
	57	#include "AliTreeDraw.h"
	58	//#include "TStatToolkit.h"
	59
	60	#include "AliMCInfo.h"
	61	#include "AliESDRecInfo.h"
	62	#include "AliComparisonDEdx.h"
	63
	64	using namespace std;
	65
	66	ClassImp(AliComparisonDEdx)
	67
	68	//_____________________________________________________________________________
	69	AliComparisonDEdx::AliComparisonDEdx():
	70	// TNamed("AliComparisonDEdx","AliComparisonDEdx"),
	71	AliComparisonObject("AliComparisonDEdx"),
	72
	73	// dEdx
	74	fTPCSignalNormTan(0),
	75	fTPCSignalNormSPhi(0),
	76	fTPCSignalNormTPhi(0),
	77	//
	78	fTPCSignalNormTanSPhi(0),
	79	fTPCSignalNormTanTPhi(0),
	80	fTPCSignalNormTanSPt(0),
	81
	82	// Cuts
	83	fCutsRC(0),
	84	fCutsMC(0),
	85	fMCPtMin(0),
86	fMCAbsTanThetaMax(0),
87	fMCPdgCode(0),
88
89	// histogram folder
90	fAnalysisFolder(0)
91	{
92	Init();
93	}
94
95	//_____________________________________________________________________________
96	AliComparisonDEdx::~AliComparisonDEdx(){
97
98	if(fTPCSignalNormTan) delete fTPCSignalNormTan; fTPCSignalNormTan=0;
99	if(fTPCSignalNormSPhi) delete fTPCSignalNormSPhi; fTPCSignalNormSPhi=0;
100	if(fTPCSignalNormTPhi) delete fTPCSignalNormTPhi; fTPCSignalNormTPhi=0;
101	//
102	if(fTPCSignalNormTanSPhi) delete fTPCSignalNormTanSPhi; fTPCSignalNormTanSPhi=0;
103	if(fTPCSignalNormTanTPhi) delete fTPCSignalNormTanTPhi; fTPCSignalNormTanTPhi=0;
104	if(fTPCSignalNormTanSPt) delete fTPCSignalNormTanSPt; fTPCSignalNormTanSPt=0;
105
106	if(fAnalysisFolder) delete fAnalysisFolder; fAnalysisFolder=0;
107	}
108
109	//_____________________________________________________________________________
110	void AliComparisonDEdx::Init()
111	{
112	// Init histograms
113
114	// TPC dEdx
115	fTPCSignalNormTan = new TH2F("CdEdxTan","CdEdxTan",50, -2,2, 40,30,70);
116	fTPCSignalNormTan->SetXTitle("tan(#theta)");
117	fTPCSignalNormTan->SetYTitle("rec. dE/dx / calc. dE/dx");
118
119	fTPCSignalNormSPhi = new TH2F("CdEdxSPhi","CdEdxSPhi",10,0.0,1,40,30,70);
120	fTPCSignalNormSPhi->SetXTitle("sin(#phi)");
121	fTPCSignalNormSPhi->SetYTitle("rec. dE/dx / calc. dE/dx");
122
123	fTPCSignalNormTPhi = new TH2F("CdEdxTPhi","CdEdxTPhi",10,0.0,2,40,30,70);
124	fTPCSignalNormTPhi->SetXTitle("tan(#phi)");
125	fTPCSignalNormTPhi->SetYTitle("rec. dE/dx / calc. dE/dx");
126
127	fTPCSignalNormTanSPhi= new TH3F("CdEdxTanSPhi","CdEdxTanSPhi",20, -2,2, 10,0.0 ,1, 40,30,70);
128	fTPCSignalNormTanSPhi->SetXTitle("tan(#theta)");
129	fTPCSignalNormTanSPhi->SetYTitle("sin(#phi)");
130	fTPCSignalNormTanSPhi->SetZTitle("rec. dE/dx / calc. dE/dx");
131
132	fTPCSignalNormTanTPhi= new TH3F("CdEdxTanTPhi","CdEdxTanTPhi",20, -2,2, 10,0.0 ,1, 40,30,70);
133	fTPCSignalNormTanTPhi->SetXTitle("tan(#theta)");
134	fTPCSignalNormTanTPhi->SetYTitle("tan(#phi)");
135	fTPCSignalNormTanTPhi->SetZTitle("rec. dE/dx / calc. dE/dx");
136
137	fTPCSignalNormTanSPt= new TH3F("CdEdxTanSPt","CdEdxTanSPt",20, -2,2, 10,0.3 ,3, 40,30,70);
138	fTPCSignalNormTanSPt->SetXTitle("tan(#theta)");
139	fTPCSignalNormTanSPt->SetYTitle("#sqrt{p_{t}}");
140	fTPCSignalNormTanSPt->SetZTitle("rec. dE/dx / calc. dE/dx");
141
142	// Init cuts
143	if(!fCutsMC)
144	AliDebug(AliLog::kError, "ERROR: Cannot find AliMCInfoCuts object");
145	if(!fCutsRC)
146	AliDebug(AliLog::kError, "ERROR: Cannot find AliRecInfoCuts object");
147
148	// init folder
149	fAnalysisFolder = CreateFolder("folderDEdx","Analysis de/dx Folder");
150	}
151
152	//_____________________________________________________________________________
153	void AliComparisonDEdx::Process(AliMCInfo* infoMC, AliESDRecInfo *infoRC){
154
155	// Fill dE/dx comparison information
156
157	Float_t mcpt = infoMC->GetParticle().Pt();
158	Float_t tantheta = TMath::Tan(infoMC->GetParticle().Theta()-TMath::Pi()*0.5);
159	Float_t mprim = infoMC->GetPrim();
160
161	// distance to Prim. vertex
162	const Double_t* dv = infoMC->GetVDist();
163
164	Bool_t isPrim = TMath::Sqrt(dv[0]dv[0] + dv[1]dv[1])<fCutsMC->GetMaxR() && TMath::Abs(dv[2])<fCutsMC->GetMaxVz();
165
166	// Check selection cuts
167	if (fCutsMC->IsPdgParticle(TMath::Abs(infoMC->GetParticle().GetPdgCode())) == kFALSE) return;
168	if (!isPrim) return;
169	if (infoRC->GetStatus(1)!=3) return;
170	if (!infoRC->GetESDtrack()) return;
171	if (infoRC->GetESDtrack()->GetTPCNcls()<fCutsRC->GetMinNClustersTPC()) return;
172	if (!infoRC->GetESDtrack()->GetConstrainedParam()) return;
173	//if (mprim>1.4) return;
174	//if (mprim<0.5) return;
175	if (mprim > fCutsMC->GetMaxTPCSignal()) return;
176	if (mprim < fCutsMC->GetMinTPCSignal()) return;
177	if (infoRC->GetESDtrack()->GetTPCsignalN()<fCutsRC->GetMinTPCsignalN()) return;
178	//
179	Float_t ratio = infoRC->GetESDtrack()->GetTPCsignal()/infoMC->GetPrim();
180	Float_t sphi = infoRC->GetESDtrack()->GetInnerParam()->GetSnp();
181	Float_t tphi = sphi/TMath::Sqrt(1-sphi*sphi);
182
183	if (TMath::Abs(infoMC->GetParticle().GetPdgCode()) != GetMCPdgCode()) return;
184	//if (mcpt>0.5) {
185	if (mcpt > GetMCPtMin()) {
186	fTPCSignalNormTan->Fill(tantheta,ratio); // only subset
187	}
188
189	//if (TMath::Abs(tantheta)<0.5){
190	if (TMath::Abs(tantheta) < GetMCAbsTanThetaMax()){
191	fTPCSignalNormSPhi->Fill(sphi,ratio); // only subset
192	fTPCSignalNormTPhi->Fill(tphi,ratio); // only subset
193	}
194	fTPCSignalNormTanSPhi->Fill(tantheta,sphi,ratio);
195	fTPCSignalNormTanTPhi->Fill(tantheta,tphi,ratio);
196	fTPCSignalNormTanSPt->Fill(tantheta,TMath::Sqrt(mcpt),ratio);
197	}
198
199	//_____________________________________________________________________________
200	Long64_t AliComparisonDEdx::Merge(TCollection* list)
201	{
202	// Merge list of objects (needed by PROOF)
203
204	if (!list)
205	return 0;
206
207	if (list->IsEmpty())
208	return 1;
209
210	TIterator* iter = list->MakeIterator();
211	TObject* obj = 0;
212
213	// collection of generated histograms
214	Int_t count=0;
215	while((obj = iter->Next()) != 0)
216	{
217	AliComparisonDEdx* entry = dynamic_cast<AliComparisonDEdx*>(obj);
218	if (entry == 0) continue;
219
220	fTPCSignalNormTan->Add(entry->fTPCSignalNormTan);
221	fTPCSignalNormSPhi->Add(entry->fTPCSignalNormSPhi);
222	fTPCSignalNormTPhi->Add(entry->fTPCSignalNormTPhi);
223	//
224	fTPCSignalNormTanSPhi->Add(entry->fTPCSignalNormTanSPhi);
225	fTPCSignalNormTanTPhi->Add(entry->fTPCSignalNormTanTPhi);
226	fTPCSignalNormTanSPt->Add(entry->fTPCSignalNormTanSPt);
227
228	count++;
229	}
230
231	return count;
232	}
233
234	//_____________________________________________________________________________
235	void AliComparisonDEdx::Exec(AliMCInfo* infoMC, AliESDRecInfo *infoRC)
236	{
237	// Process comparison information
238	Process(infoMC,infoRC);
239	}
240
241	//_____________________________________________________________________________
242	TH1F* AliComparisonDEdx::MakeResol(TH2F * his, Int_t integ, Bool_t type)
243	{
244	// Make resolution histograms
245	TH1F hisr, hism;
246	if (!gPad) new TCanvas;
247	hisr = AliTreeDraw::CreateResHistoI(his,&hism,integ);
248	if (type) return hism;
249	else
250	return hisr;
251	}
252
253	//_____________________________________________________________________________
254	void AliComparisonDEdx::Analyse()
255	{
b4126c69	256	// Analyze comparison information and store output histograms
3baa4bfd	257	// in the folder "folderDEdx"
	258	//
	259
	260	TH1::AddDirectory(kFALSE);
	261
	262	AliComparisonDEdx * comp=this;
b4126c69	263	TObjArray *aFolderObj = new TObjArray;
3baa4bfd	264
	265	TH1F *hiss=0;
	266	TGraph2D * gr=0;
	267
3baa4bfd	268	// write results in the folder
	269	TCanvas * c = new TCanvas("can","TPC dedx");
	270	c->cd();
	271
	272	hiss = comp->MakeResol(comp->fTPCSignalNormTan,4,0);
	273	hiss->SetXTitle("Tan(#theta)");
	274	hiss->SetYTitle("#sigma_{dEdx}");
	275	hiss->Draw();
	276	hiss->SetName("TPCdEdxResolTan");
	277
b4126c69	278	aFolderObj->Add(hiss);
3baa4bfd	279	//
	280	hiss = comp->MakeResol(comp->fTPCSignalNormTan,4,1);
	281	hiss->SetXTitle("Tan(#theta)");
	282	hiss->SetYTitle("<dEdx>");
	283	hiss->Draw();
	284	hiss->SetName("TPCdEdxMeanTan");
	285
b4126c69	286	aFolderObj->Add(hiss);
3baa4bfd	287	//
	288	gr = AliMathBase::MakeStat2D(comp->fTPCSignalNormTanSPt,3,1,4);
	289	gr->GetXaxis()->SetTitle("Tan(#theta)");
	290	gr->GetYaxis()->SetTitle("#sqrt{p_{t}(GeV)}");
	291	gr->GetZaxis()->SetTitle("<dEdx>");
	292	gr->SetName("TPCdEdxMeanTanPt_1");
	293	gr->GetHistogram()->Draw("colz");
	294
decf0997	295	gr->GetHistogram()->SetName("TPCdEdxMeanTanPt_1");
b4126c69	296	aFolderObj->Add(gr->GetHistogram());
3baa4bfd	297	//
	298	gr = AliMathBase::MakeStat2D(comp->fTPCSignalNormTanSPt,3,1,5);
	299	gr->GetXaxis()->SetTitle("Tan(#theta)");
	300	gr->GetYaxis()->SetTitle("#sqrt{p_{t}(GeV)}");
	301	gr->GetZaxis()->SetTitle("#sigma_{dEdx}");
	302	gr->SetName("TPCdEdxMeanTanPt_2");
	303	gr->GetHistogram()->Draw("colz");
	304
decf0997	305	gr->GetHistogram()->SetName("TPCdEdxMeanTanPt_2");
b4126c69	306	aFolderObj->Add(gr->GetHistogram());
	307
	308	// export objects to analysis folder
	309	fAnalysisFolder = ExportToFolder(aFolderObj);
	310
	311	// delete only TObjrArray
	312	if(aFolderObj) delete aFolderObj;
	313	}
	314
	315	//_____________________________________________________________________________
	316	TFolder* AliComparisonDEdx::ExportToFolder(TObjArray * array)
	317	{
	318	// recreate folder avery time and export objects to new one
	319	//
	320	AliComparisonDEdx * comp=this;
	321	TFolder *folder = comp->GetAnalysisFolder();
	322
	323	TString name, title;
	324	TFolder *newFolder = 0;
	325	Int_t i = 0;
	326	Int_t size = array->GetSize();
	327
	328	if(folder) {
	329	// get name and title from old folder
	330	name = folder->GetName();
	331	title = folder->GetTitle();
	332
	333	// delete old one
	334	delete folder;
3baa4bfd	335
b4126c69	336	// create new one
	337	newFolder = CreateFolder(name.Data(),title.Data());
	338	newFolder->SetOwner();
	339
	340	// add objects to folder
	341	while(i < size) {
	342	newFolder->Add(array->At(i));
	343	i++;
	344	}
	345	}
	346
	347	return newFolder;
3baa4bfd	348	}
3baa4bfd	349
b4126c69	350
3baa4bfd	351	//_____________________________________________________________________________
	352	TFolder* AliComparisonDEdx::CreateFolder(TString name,TString title) {
	353	// create folder for analysed histograms
	354	TFolder *folder = 0;
	355	folder = new TFolder(name.Data(),title.Data());
	356
	357	return folder;
	358	}
	359