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

//------------------------------------------------------------------------------
// Implementation of AliPerformanceDEdx 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 AliPerformanceDEdx.
//  
// 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");
  //AliPerformanceDEdx * compObj = (AliPerformanceDEdx*)f.Get("AliPerformanceDEdx");
  AliPerformanceDEdx * compObj = (AliPerformanceDEdx*)coutput->FindObject("AliPerformanceDEdx");

  // 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 <TDirectory.h>
#include <TAxis.h>
#include <TCanvas.h>
#include <TH1.h>
#include <TH2.h>
#include <TF1.h>

#include "AliPerformanceDEdx.h" 
#include "AliESDEvent.h"
#include "AliMCEvent.h"
#include "AliESDtrack.h"
#include "AliStack.h"
#include "AliLog.h" 
#include "AliMCInfoCuts.h" 
#include "AliMathBase.h"
#include "AliRecInfoCuts.h" 
#include "AliTreeDraw.h"
#include "AliHeader.h"
#include "AliGenEventHeader.h"

using namespace std;

ClassImp(AliPerformanceDEdx)

//_____________________________________________________________________________
AliPerformanceDEdx::AliPerformanceDEdx():
  AliPerformanceObject("AliPerformanceDEdx"),

  // dEdx 
  fDeDxHisto(0),
  
  // Cuts 
  fCutsRC(0), 
  fCutsMC(0),

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

//_____________________________________________________________________________
AliPerformanceDEdx::AliPerformanceDEdx(Char_t* name="AliPerformanceDEdx", Char_t* title="AliPerformanceDEdx",Int_t analysisMode=0, Bool_t hptGenerator=kFALSE):
  AliPerformanceObject(name,title),

  // dEdx 
  fDeDxHisto(0),
  
  // Cuts 
  fCutsRC(0), 
  fCutsMC(0),

  // histogram folder 
  fAnalysisFolder(0)
{
  // named constructor

  SetAnalysisMode(analysisMode);
  SetHptGenerator(hptGenerator);
  Init();
}


//_____________________________________________________________________________
AliPerformanceDEdx::~AliPerformanceDEdx()
{
  // destructor
  if(fDeDxHisto)  delete fDeDxHisto; fDeDxHisto=0; 
  if(fAnalysisFolder) delete fAnalysisFolder; fAnalysisFolder=0;
}

//_____________________________________________________________________________
void AliPerformanceDEdx::Init()
{
  // Init histograms
  
  // TPC dEdx
  // set pt bins
  Int_t nPBins = 50;
  Double_t pMin = 1.e-2, pMax = 10.;

  Double_t *binsP = 0;
  if (IsHptGenerator())  { 
    nPBins = 100; pMax = 100.;
    binsP = CreateLogAxis(nPBins,pMin,pMax);
  } else {
    binsP = CreateLogAxis(nPBins,pMin,pMax);
  }


  /*
  Int_t nPBins = 31;
    Double_t binsP[32] = {0.,0.05,0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.7,0.8,0.9,1.0,1.2,1.4,1.6,1.8,2.0,2.25,2.5,2.75,3.,3.5,4.,5.,6.,8.,10.};
    Double_t pMin = 0., pMax = 10.;

    if(IsHptGenerator() == kTRUE) {
      nPBins = 100;
      pMin = 0.; pMax = 100.;
    }
   */

   //dedx:alpha:y:z:snp:tgl:ncls:p
   //dedx:phi:y:z:snp:tgl:ncls:p
   //Int_t binsQA[8]    = {300, 50, 50,  50, 50, 50, 80, nPBins};
   //Double_t xminQA[8] = {0, -4,-20,-250, -1, -2, 0, pMin};
   //Double_t xmaxQA[8] = {300, 4, 20, 250,  1,  2, 160, pMax};
   Int_t binsQA[8]    = {300, 144, 50,  50, 50, 50, 80, nPBins};
   Double_t xminQA[8] = {0, -TMath::Pi(),-20,-250, -1, -2, 0, pMin};
   Double_t xmaxQA[8] = {300, TMath::Pi(), 20, 250,  1,  2, 160, pMax};

   //fDeDxHisto = new THnSparseF("fDeDxHisto","dedx:alpha:y:z:snp:tgl:ncls:momentum",8,binsQA,xminQA,xmaxQA);
   fDeDxHisto = new THnSparseF("fDeDxHisto","dedx:phi:y:z:snp:tgl:ncls:momentum",8,binsQA,xminQA,xmaxQA);
   fDeDxHisto->SetBinEdges(7,binsP);

   fDeDxHisto->GetAxis(0)->SetTitle("dedx (a.u.)");
   fDeDxHisto->GetAxis(1)->SetTitle("#phi (rad)");
   fDeDxHisto->GetAxis(2)->SetTitle("y (cm)");
   fDeDxHisto->GetAxis(3)->SetTitle("z (cm)");
   fDeDxHisto->GetAxis(4)->SetTitle("snp");
   fDeDxHisto->GetAxis(5)->SetTitle("tgl");
   fDeDxHisto->GetAxis(6)->SetTitle("ncls");
   fDeDxHisto->GetAxis(7)->SetTitle("p (GeV/c)");
   fDeDxHisto->Sumw2();

   // 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 AliPerformanceDEdx::ProcessTPC(AliStack* const stack, AliESDtrack *const esdTrack)
{
  if(!esdTrack) return;

  const AliExternalTrackParam *innerParam =  esdTrack->GetInnerParam();
  if(!innerParam) return;

  Float_t dca[2], cov[3]; // dca_xy, dca_z, sigma_xy, sigma_xy_z, sigma_z
  esdTrack->GetImpactParametersTPC(dca,cov);

  if((esdTrack->GetStatus()&AliESDtrack::kTPCrefit)==0) return; // TPC refit
  if(TMath::Abs(dca[0])<fCutsRC->GetMaxDCAToVertexXY() && TMath::Abs(dca[1])<fCutsRC->GetMaxDCAToVertexZ()) 
  { 
    Float_t dedx = esdTrack->GetTPCsignal();
    Int_t ncls = esdTrack->GetTPCNcls();

    Double_t pt = innerParam->Pt();
    Double_t lam = TMath::ATan2(innerParam->Pz(),innerParam->Pt());
    Double_t p = pt/TMath::Cos(lam);
    //Double_t alpha = innerParam->GetAlpha();
    Double_t phi = TMath::ATan2(innerParam->Py(),innerParam->Px());
    //if(phi<0.) phi += 2.*TMath::Phi();
    Double_t y = innerParam->GetY();
    Double_t z = innerParam->GetZ();
    Double_t snp = innerParam->GetSnp();
    Double_t tgl = innerParam->GetTgl();

    //Double_t vDeDxHisto[8] = {dedx,alpha,y,z,snp,tgl,ncls,p};
    Double_t vDeDxHisto[8] = {dedx,phi,y,z,snp,tgl,ncls,p};
    fDeDxHisto->Fill(vDeDxHisto); 
  }

  if(!stack) return;
}

//_____________________________________________________________________________
void AliPerformanceDEdx::ProcessTPCITS(AliStack* const /*stack*/, AliESDtrack *const /*esdTrack*/)
{
  // Fill dE/dx  comparison information
  
   AliDebug(AliLog::kWarning, "Warning: Not implemented");
}

//_____________________________________________________________________________
void AliPerformanceDEdx::ProcessConstrained(AliStack* const /*stack*/, AliESDtrack *const /*esdTrack*/)
{
  // Fill dE/dx  comparison information
  
   AliDebug(AliLog::kWarning, "Warning: Not implemented");
}

//_____________________________________________________________________________
Long64_t AliPerformanceDEdx::Merge(TCollection* const 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) 
  {
    AliPerformanceDEdx* entry = dynamic_cast<AliPerformanceDEdx*>(obj);
    if (entry == 0) continue;

    fDeDxHisto->Add(entry->fDeDxHisto);
    count++;
  }

return count;
}

//_____________________________________________________________________________
void AliPerformanceDEdx::Exec(AliMCEvent* const mcEvent, AliESDEvent* const esdEvent, const Bool_t bUseMC)
{
  // Process comparison information 
  //
  if(!esdEvent) 
  {
      AliDebug(AliLog::kError, "esdEvent not available");
      return;
  }
  AliHeader* header = 0;
  AliGenEventHeader* genHeader = 0;
  AliStack* stack = 0;
  TArrayF vtxMC(3);
  
  if(bUseMC)
  {
    if(!mcEvent) {
      AliDebug(AliLog::kError, "mcEvent not available");
      return;
    }

    // get MC event header
    header = mcEvent->Header();
    if (!header) {
      AliDebug(AliLog::kError, "Header not available");
      return;
    }
    // MC particle stack
    stack = mcEvent->Stack();
    if (!stack) {
      AliDebug(AliLog::kError, "Stack not available");
      return;
    }

    // get MC vertex
    genHeader = header->GenEventHeader();
    if (!genHeader) {
      AliDebug(AliLog::kError, "Could not retrieve genHeader from Header");
      return;
    }
    genHeader->PrimaryVertex(vtxMC);

  } // end bUseMC

  //  Process events
  for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++) 
  { 
    AliESDtrack *track = esdEvent->GetTrack(iTrack);
    if(!track) continue;

    if(GetAnalysisMode() == 0) ProcessTPC(stack,track);
    else if(GetAnalysisMode() == 1) ProcessTPCITS(stack,track);
    else if(GetAnalysisMode() == 2) ProcessConstrained(stack,track);
    else {
      printf("ERROR: AnalysisMode %d \n",fAnalysisMode);
      return;
    }
  }
}

//_____________________________________________________________________________
void AliPerformanceDEdx::Analyse()
{
  // Analyze comparison information and store output histograms
  // in the folder "folderDEdx"
  //
  TH1::AddDirectory(kFALSE);
  TH1F *h1D=0;
  TH2F *h2D=0;
  TObjArray *aFolderObj = new TObjArray;

  char name[256];
  char title[256];

  for(Int_t i=1; i<8; i++) { 
    //
    h2D = (TH2F*)fDeDxHisto->Projection(0,i);

    sprintf(name,"h_dedx_%d_vs_%d",0,i);
    h2D->SetName(name);
    sprintf(title,"%s vs %s",fDeDxHisto->GetAxis(0)->GetTitle(),fDeDxHisto->GetAxis(i)->GetTitle());
    h2D->SetTitle(title);
    h2D->GetXaxis()->SetTitle(fDeDxHisto->GetAxis(i)->GetTitle());
    h2D->GetYaxis()->SetTitle(fDeDxHisto->GetAxis(0)->GetTitle());

    if(i==7) h2D->SetBit(TH1::kLogX);
    aFolderObj->Add(h2D);
  }

  // resolution histograms for mips
  fDeDxHisto->GetAxis(2)->SetRangeUser(-15.,14.999);
  fDeDxHisto->GetAxis(3)->SetRangeUser(-120.,119.999);
  fDeDxHisto->GetAxis(4)->SetRangeUser(-0.4, 0.399);
  fDeDxHisto->GetAxis(5)->SetRangeUser(-1.,0.999);
  fDeDxHisto->GetAxis(6)->SetRangeUser(60.,140.);
  fDeDxHisto->GetAxis(7)->SetRangeUser(0.4,0.499);

  h1D=(TH1F*)fDeDxHisto->Projection(0);
  h1D->SetName("dedx_mips");

  h1D->SetTitle("dedx_mips");
  h1D->GetXaxis()->SetTitle(fDeDxHisto->GetAxis(0)->GetTitle());
  aFolderObj->Add(h1D);

  //
  TObjArray *arr[7] = {0};
  TF1 *f1[7] = {0};
  
  for(Int_t i=1; i<8; i++) 
  { 
    arr[i] = new TObjArray;
    f1[i] = new TF1("gaus","gaus");
    //printf("i %d \n",i);

    h2D = (TH2F*)fDeDxHisto->Projection(0,i);

    f1[i]->SetRange(40,60); // should be pion peak
    h2D->FitSlicesY(f1[i],0,-1,10,"QNR",arr[i]); // gaus fit of pion peak

    h1D = (TH1F*)arr[i]->At(1);
    sprintf(name,"mean_dedx_mips_vs_%d",i);
    h1D->SetName(name);
    sprintf(title,"%s vs %s","mean_dedx_mips (a.u.)",fDeDxHisto->GetAxis(i)->GetTitle());
    h1D->SetTitle(title);
    h1D->GetXaxis()->SetTitle(fDeDxHisto->GetAxis(i)->GetTitle());
    h1D->GetYaxis()->SetTitle("mean_dedx_mips (a.u.)");
    //h1D->SetMinimum(40);
    //h1D->SetMaximum(60);

    aFolderObj->Add(h1D);

    h1D = (TH1F*)arr[i]->At(2);
    sprintf(name,"res_dedx_mips_vs_%d",i);
    h1D->SetName(name);
    sprintf(title,"%s vs %s","res_dedx_mips (a.u)",fDeDxHisto->GetAxis(i)->GetTitle());
    h1D->SetTitle(title);
    h1D->GetXaxis()->SetTitle(fDeDxHisto->GetAxis(i)->GetTitle());
    h1D->GetYaxis()->SetTitle("res_dedx_mips (a.u.)");
    //h1D->SetMinimum(0);
    //h1D->SetMaximum(6);

    aFolderObj->Add(h1D);
  }

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

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

//_____________________________________________________________________________
TFolder* AliPerformanceDEdx::ExportToFolder(TObjArray * array) 
{
  // recreate folder avery time and export objects to new one
  //
  AliPerformanceDEdx * 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* AliPerformanceDEdx::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
777a0ba6	1	//------------------------------------------------------------------------------
	2	// Implementation of AliPerformanceDEdx 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 AliPerformanceDEdx.
	9	//
	10	// Author: J.Otwinowski 04/02/2008
	11	//------------------------------------------------------------------------------
	12
	13	/*
	14
	15	// after running comparison task, read the file, and get component
	16	gROOT->LoadMacro("$ALICE_ROOT/PWG1/Macros/LoadMyLibs.C");
	17	LoadMyLibs();
	18	TFile f("Output.root");
	19	//AliPerformanceDEdx * compObj = (AliPerformanceDEdx*)f.Get("AliPerformanceDEdx");
	20	AliPerformanceDEdx * compObj = (AliPerformanceDEdx*)coutput->FindObject("AliPerformanceDEdx");
	21
	22	// Analyse comparison data
	23	compObj->Analyse();
	24
	25	// the output histograms/graphs will be stored in the folder "folderDEdx"
	26	compObj->GetAnalysisFolder()->ls("*");
	27
	28	// user can save whole comparison object (or only folder with anlysed histograms)
	29	// in the seperate output file (e.g.)
	30	TFile fout("Analysed_DEdx.root"."recreate");
	31	compObj->Write(); // compObj->GetAnalysisFolder()->Write();
	32	fout.Close();
	33
	34	*/
	35
	36	#include <TDirectory.h>
	37	#include <TAxis.h>
	38	#include <TCanvas.h>
	39	#include <TH1.h>
	40	#include <TH2.h>
	41	#include <TF1.h>
	42
	43	#include "AliPerformanceDEdx.h"
	44	#include "AliESDEvent.h"
	45	#include "AliMCEvent.h"
	46	#include "AliESDtrack.h"
	47	#include "AliStack.h"
	48	#include "AliLog.h"
	49	#include "AliMCInfoCuts.h"
	50	#include "AliMathBase.h"
	51	#include "AliRecInfoCuts.h"
	52	#include "AliTreeDraw.h"
	53	#include "AliHeader.h"
	54	#include "AliGenEventHeader.h"
	55
	56	using namespace std;
	57
	58	ClassImp(AliPerformanceDEdx)
	59
	60	//_____________________________________________________________________________
	61	AliPerformanceDEdx::AliPerformanceDEdx():
	62	AliPerformanceObject("AliPerformanceDEdx"),
	63
	64	// dEdx
65	fDeDxHisto(0),
66
67	// Cuts
68	fCutsRC(0),
69	fCutsMC(0),
70
71	// histogram folder
72	fAnalysisFolder(0)
73	{
74	// default constructor
75	Init();
76	}
77
78	//_____________________________________________________________________________
79	AliPerformanceDEdx::AliPerformanceDEdx(Char_t* name="AliPerformanceDEdx", Char_t* title="AliPerformanceDEdx",Int_t analysisMode=0, Bool_t hptGenerator=kFALSE):
80	AliPerformanceObject(name,title),
81
82	// dEdx
83	fDeDxHisto(0),
84
85	// Cuts
86	fCutsRC(0),
87	fCutsMC(0),
88
89	// histogram folder
90	fAnalysisFolder(0)
91	{
92	// named constructor
93
94	SetAnalysisMode(analysisMode);
95	SetHptGenerator(hptGenerator);
96	Init();
97	}
98
99
100	//_____________________________________________________________________________
101	AliPerformanceDEdx::~AliPerformanceDEdx()
102	{
103	// destructor
104	if(fDeDxHisto) delete fDeDxHisto; fDeDxHisto=0;
105	if(fAnalysisFolder) delete fAnalysisFolder; fAnalysisFolder=0;
106	}
107
108	//_____________________________________________________________________________
109	void AliPerformanceDEdx::Init()
110	{
111	// Init histograms
112
113	// TPC dEdx
114	// set pt bins
115	Int_t nPBins = 50;
116	Double_t pMin = 1.e-2, pMax = 10.;
117
118	Double_t *binsP = 0;
119	if (IsHptGenerator()) {
120	nPBins = 100; pMax = 100.;
121	binsP = CreateLogAxis(nPBins,pMin,pMax);
122	} else {
123	binsP = CreateLogAxis(nPBins,pMin,pMax);
124	}
125
126
127	/*
128	Int_t nPBins = 31;
129	Double_t binsP[32] = {0.,0.05,0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.7,0.8,0.9,1.0,1.2,1.4,1.6,1.8,2.0,2.25,2.5,2.75,3.,3.5,4.,5.,6.,8.,10.};
130	Double_t pMin = 0., pMax = 10.;
131
132	if(IsHptGenerator() == kTRUE) {
133	nPBins = 100;
134	pMin = 0.; pMax = 100.;
135	}
136	*/
137
138	//dedx:alpha:y:z:snp:tgl:ncls:p
139	//dedx:phi:y:z:snp:tgl:ncls:p
140	//Int_t binsQA[8] = {300, 50, 50, 50, 50, 50, 80, nPBins};
141	//Double_t xminQA[8] = {0, -4,-20,-250, -1, -2, 0, pMin};
142	//Double_t xmaxQA[8] = {300, 4, 20, 250, 1, 2, 160, pMax};
143	Int_t binsQA[8] = {300, 144, 50, 50, 50, 50, 80, nPBins};
144	Double_t xminQA[8] = {0, -TMath::Pi(),-20,-250, -1, -2, 0, pMin};
145	Double_t xmaxQA[8] = {300, TMath::Pi(), 20, 250, 1, 2, 160, pMax};
146
147	//fDeDxHisto = new THnSparseF("fDeDxHisto","dedx:alpha:y:z:snp:tgl:ncls:momentum",8,binsQA,xminQA,xmaxQA);
148	fDeDxHisto = new THnSparseF("fDeDxHisto","dedx:phi:y:z:snp:tgl:ncls:momentum",8,binsQA,xminQA,xmaxQA);
149	fDeDxHisto->SetBinEdges(7,binsP);
150
151	fDeDxHisto->GetAxis(0)->SetTitle("dedx (a.u.)");
152	fDeDxHisto->GetAxis(1)->SetTitle("#phi (rad)");
153	fDeDxHisto->GetAxis(2)->SetTitle("y (cm)");
154	fDeDxHisto->GetAxis(3)->SetTitle("z (cm)");
155	fDeDxHisto->GetAxis(4)->SetTitle("snp");
156	fDeDxHisto->GetAxis(5)->SetTitle("tgl");
157	fDeDxHisto->GetAxis(6)->SetTitle("ncls");
158	fDeDxHisto->GetAxis(7)->SetTitle("p (GeV/c)");
159	fDeDxHisto->Sumw2();
160
161	// Init cuts
162	if(!fCutsMC)
163	AliDebug(AliLog::kError, "ERROR: Cannot find AliMCInfoCuts object");
164	if(!fCutsRC)
165	AliDebug(AliLog::kError, "ERROR: Cannot find AliRecInfoCuts object");
166
167	// init folder
168	fAnalysisFolder = CreateFolder("folderDEdx","Analysis de/dx Folder");
169	}
170
171	//_____________________________________________________________________________
172	void AliPerformanceDEdx::ProcessTPC(AliStack* const stack, AliESDtrack *const esdTrack)
173	{
174	if(!esdTrack) return;
175
176	const AliExternalTrackParam *innerParam = esdTrack->GetInnerParam();
177	if(!innerParam) return;
178
179	Float_t dca[2], cov[3]; // dca_xy, dca_z, sigma_xy, sigma_xy_z, sigma_z
180	esdTrack->GetImpactParametersTPC(dca,cov);
181
182	if((esdTrack->GetStatus()&AliESDtrack::kTPCrefit)==0) return; // TPC refit
183	if(TMath::Abs(dca[0])<fCutsRC->GetMaxDCAToVertexXY() && TMath::Abs(dca[1])<fCutsRC->GetMaxDCAToVertexZ())
184	{
185	Float_t dedx = esdTrack->GetTPCsignal();
186	Int_t ncls = esdTrack->GetTPCNcls();
187
188	Double_t pt = innerParam->Pt();
189	Double_t lam = TMath::ATan2(innerParam->Pz(),innerParam->Pt());
190	Double_t p = pt/TMath::Cos(lam);
191	//Double_t alpha = innerParam->GetAlpha();
192	Double_t phi = TMath::ATan2(innerParam->Py(),innerParam->Px());
193	//if(phi<0.) phi += 2.*TMath::Phi();
194	Double_t y = innerParam->GetY();
195	Double_t z = innerParam->GetZ();
196	Double_t snp = innerParam->GetSnp();
197	Double_t tgl = innerParam->GetTgl();
198
199	//Double_t vDeDxHisto[8] = {dedx,alpha,y,z,snp,tgl,ncls,p};
200	Double_t vDeDxHisto[8] = {dedx,phi,y,z,snp,tgl,ncls,p};
201	fDeDxHisto->Fill(vDeDxHisto);
202	}
203
204	if(!stack) return;
205	}
206
207	//_____________________________________________________________________________
208	void AliPerformanceDEdx::ProcessTPCITS(AliStack* const /stack/, AliESDtrack const /esdTrack*/)
209	{
210	// Fill dE/dx comparison information
211
212	AliDebug(AliLog::kWarning, "Warning: Not implemented");
213	}
214
215	//_____________________________________________________________________________
216	void AliPerformanceDEdx::ProcessConstrained(AliStack* const /stack/, AliESDtrack const /esdTrack*/)
217	{
218	// Fill dE/dx comparison information
219
220	AliDebug(AliLog::kWarning, "Warning: Not implemented");
221	}
222
223	//_____________________________________________________________________________
224	Long64_t AliPerformanceDEdx::Merge(TCollection* const list)
225	{
226	// Merge list of objects (needed by PROOF)
227
228	if (!list)
229	return 0;
230
231	if (list->IsEmpty())
232	return 1;
233
234	TIterator* iter = list->MakeIterator();
235	TObject* obj = 0;
236
237	// collection of generated histograms
238	Int_t count=0;
239	while((obj = iter->Next()) != 0)
240	{
241	AliPerformanceDEdx* entry = dynamic_cast<AliPerformanceDEdx*>(obj);
242	if (entry == 0) continue;
243
244	fDeDxHisto->Add(entry->fDeDxHisto);
245	count++;
246	}
247
248	return count;
249	}
250
251	//_____________________________________________________________________________
252	void AliPerformanceDEdx::Exec(AliMCEvent* const mcEvent, AliESDEvent* const esdEvent, const Bool_t bUseMC)
253	{
254	// Process comparison information
255	//
256	if(!esdEvent)
257	{
258	AliDebug(AliLog::kError, "esdEvent not available");
259	return;
260	}
261	AliHeader* header = 0;
262	AliGenEventHeader* genHeader = 0;
263	AliStack* stack = 0;
264	TArrayF vtxMC(3);
265
266	if(bUseMC)
267	{
268	if(!mcEvent) {
269	AliDebug(AliLog::kError, "mcEvent not available");
270	return;
271	}
272
273	// get MC event header
274	header = mcEvent->Header();
275	if (!header) {
276	AliDebug(AliLog::kError, "Header not available");
277	return;
278	}
279	// MC particle stack
280	stack = mcEvent->Stack();
281	if (!stack) {
282	AliDebug(AliLog::kError, "Stack not available");
283	return;
284	}
285
286	// get MC vertex
287	genHeader = header->GenEventHeader();
288	if (!genHeader) {
289	AliDebug(AliLog::kError, "Could not retrieve genHeader from Header");
290	return;
291	}
292	genHeader->PrimaryVertex(vtxMC);
293
294	} // end bUseMC
295
296	// Process events
297	for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
298	{
299	AliESDtrack *track = esdEvent->GetTrack(iTrack);
300	if(!track) continue;
301
302	if(GetAnalysisMode() == 0) ProcessTPC(stack,track);
303	else if(GetAnalysisMode() == 1) ProcessTPCITS(stack,track);
304	else if(GetAnalysisMode() == 2) ProcessConstrained(stack,track);
305	else {
306	printf("ERROR: AnalysisMode %d \n",fAnalysisMode);
307	return;
308	}
309	}
310	}
311
312	//_____________________________________________________________________________
313	void AliPerformanceDEdx::Analyse()
314	{
315	// Analyze comparison information and store output histograms
316	// in the folder "folderDEdx"
317	//
318	TH1::AddDirectory(kFALSE);
319	TH1F *h1D=0;
320	TH2F *h2D=0;
321	TObjArray *aFolderObj = new TObjArray;
322
323	char name[256];
324	char title[256];
325
326	for(Int_t i=1; i<8; i++) {
327	//
328	h2D = (TH2F*)fDeDxHisto->Projection(0,i);
329
330	sprintf(name,"h_dedx_%d_vs_%d",0,i);
331	h2D->SetName(name);
332	sprintf(title,"%s vs %s",fDeDxHisto->GetAxis(0)->GetTitle(),fDeDxHisto->GetAxis(i)->GetTitle());
333	h2D->SetTitle(title);
334	h2D->GetXaxis()->SetTitle(fDeDxHisto->GetAxis(i)->GetTitle());
335	h2D->GetYaxis()->SetTitle(fDeDxHisto->GetAxis(0)->GetTitle());
336
337	if(i==7) h2D->SetBit(TH1::kLogX);
338	aFolderObj->Add(h2D);
339	}
340
341	// resolution histograms for mips
342	fDeDxHisto->GetAxis(2)->SetRangeUser(-15.,14.999);
343	fDeDxHisto->GetAxis(3)->SetRangeUser(-120.,119.999);
344	fDeDxHisto->GetAxis(4)->SetRangeUser(-0.4, 0.399);
345	fDeDxHisto->GetAxis(5)->SetRangeUser(-1.,0.999);
346	fDeDxHisto->GetAxis(6)->SetRangeUser(60.,140.);
347	fDeDxHisto->GetAxis(7)->SetRangeUser(0.4,0.499);
348
349	h1D=(TH1F*)fDeDxHisto->Projection(0);
350	h1D->SetName("dedx_mips");
351
352	h1D->SetTitle("dedx_mips");
353	h1D->GetXaxis()->SetTitle(fDeDxHisto->GetAxis(0)->GetTitle());
354	aFolderObj->Add(h1D);
355
356	//
357	TObjArray *arr[7] = {0};
358	TF1 *f1[7] = {0};
359
360	for(Int_t i=1; i<8; i++)
361	{
362	arr[i] = new TObjArray;
363	f1[i] = new TF1("gaus","gaus");
364	//printf("i %d \n",i);
365
366	h2D = (TH2F*)fDeDxHisto->Projection(0,i);
367
368	f1[i]->SetRange(40,60); // should be pion peak
369	h2D->FitSlicesY(f1[i],0,-1,10,"QNR",arr[i]); // gaus fit of pion peak
370
371	h1D = (TH1F*)arr[i]->At(1);
372	sprintf(name,"mean_dedx_mips_vs_%d",i);
373	h1D->SetName(name);
374	sprintf(title,"%s vs %s","mean_dedx_mips (a.u.)",fDeDxHisto->GetAxis(i)->GetTitle());
375	h1D->SetTitle(title);
376	h1D->GetXaxis()->SetTitle(fDeDxHisto->GetAxis(i)->GetTitle());
377	h1D->GetYaxis()->SetTitle("mean_dedx_mips (a.u.)");
378	//h1D->SetMinimum(40);
379	//h1D->SetMaximum(60);
380
381	aFolderObj->Add(h1D);
382
383	h1D = (TH1F*)arr[i]->At(2);
384	sprintf(name,"res_dedx_mips_vs_%d",i);
385	h1D->SetName(name);
386	sprintf(title,"%s vs %s","res_dedx_mips (a.u)",fDeDxHisto->GetAxis(i)->GetTitle());
387	h1D->SetTitle(title);
388	h1D->GetXaxis()->SetTitle(fDeDxHisto->GetAxis(i)->GetTitle());
389	h1D->GetYaxis()->SetTitle("res_dedx_mips (a.u.)");
390	//h1D->SetMinimum(0);
391	//h1D->SetMaximum(6);
392
393	aFolderObj->Add(h1D);
394	}
395
396	// export objects to analysis folder
397	fAnalysisFolder = ExportToFolder(aFolderObj);
398
399	// delete only TObjrArray
400	if(aFolderObj) delete aFolderObj;
401	}
402
403	//_____________________________________________________________________________
404	TFolder* AliPerformanceDEdx::ExportToFolder(TObjArray * array)
405	{
406	// recreate folder avery time and export objects to new one
407	//
408	AliPerformanceDEdx * comp=this;
409	TFolder *folder = comp->GetAnalysisFolder();
410
411	TString name, title;
412	TFolder *newFolder = 0;
413	Int_t i = 0;
414	Int_t size = array->GetSize();
415
416	if(folder) {
417	// get name and title from old folder
418	name = folder->GetName();
419	title = folder->GetTitle();
420
421	// delete old one
422	delete folder;
423
424	// create new one
425	newFolder = CreateFolder(name.Data(),title.Data());
426	newFolder->SetOwner();
427
428	// add objects to folder
429	while(i < size) {
430	newFolder->Add(array->At(i));
431	i++;
432	}
433	}
434
435	return newFolder;
436	}
437
438
439	//_____________________________________________________________________________
440	TFolder* AliPerformanceDEdx::CreateFolder(TString name,TString title) {
441	// create folder for analysed histograms
442	TFolder *folder = 0;
443	folder = new TFolder(name.Data(),title.Data());
444
445	return folder;
446	}
447