[u/mrichter/AliRoot.git] / PWG4 / macros / anaTaggedPhoton.C

/* $Id:  $ */
//--------------------------------------------------
// Example macro to do analysis with the 
// analysis classes in PWG4PartCorr
// Can be executed with Root and AliRoot
//
// Pay attention to the options and definitions
// set in the lines below
//
//  Author : Gustavo Conesa Balbastre (INFN-LNF)
//
//-------------------------------------------------
enum anaModes {mLocal, mLocalCAF,mPROOF,mGRID};
//mLocal: Analyze locally files in your computer
//mLocalCAF: Analyze locally CAF files
//mPROOF: Analyze CAF files with PROOF

//---------------------------------------------------------------------------
//Settings to read locally several files, only for "mLocal" mode
//The different values are default, they can be set with environmental 
//variables: INDIR, PATTERN, NEVENT, respectivelly
char * kInDir = "/home/blau/data";
char * kPattern = ""; // Data are in diles /data/Run0, 
Int_t kEvent = 3; // Number of files
//---------------------------------------------------------------------------
//Collection file for grid analysis
char * kXML = "collection.xml";
//---------------------------------------------------------------------------
//Scale histograms from file. Change to kTRUE when xsection file exists
//Put name of file containing xsection 
//Put number of events per ESD file
//This is an specific case for normalization of Pythia files.
const Bool_t kGetXSectionFromFileAndScale = kFALSE ;
const char * kXSFileName = "pyxsec.root";
//const Int_t kNumberOfEventsPerFile = 100; 
//---------------------------------------------------------------------------

const Bool_t kMC = kTRUE; //With real data kMC = kFALSE
const TString kInputData = "ESD";//ESD, AOD, MC
TString kTreeName = "esdTree";

void anaPhotonTagging(Int_t mode=mGRID, TString configName = "ConfigAnalysisPhoton")
{
  // Main

  //--------------------------------------------------------------------
  // Load analysis libraries
  // Look at the method below, 
  // change whatever you need for your analysis case
  // ------------------------------------------------------------------
  LoadLibraries(mode) ;
  
  //-------------------------------------------------------------------------------------------------
  //Create chain from ESD and from cross sections files, look below for options.
  //------------------------------------------------------------------------------------------------- 
  if(kInputData == "ESD") kTreeName = "esdTree" ;
  else if(kInputData == "AOD") kTreeName = "aodTree" ;
  else if (kInputData == "MC") kTreeName = "TE" ;
  else {
    cout<<"Wrong  data type "<<kInputData<<endl;
    break;
  }

  TChain *chain   = new TChain(kTreeName) ;
  TChain * chainxs = new TChain("Xsection") ;
  CreateChain(mode, chain, chainxs);  

  if(chain){
    AliLog::SetGlobalLogLevel(AliLog::kError);//Minimum prints on screen
    
    //--------------------------------------
    // Make the analysis manager
    //-------------------------------------
    AliAnalysisManager *mgr  = new AliAnalysisManager("Manager", "Manager");
    // MC handler
    if(kMC || kInputData == "MC"){
      AliMCEventHandler* mcHandler = new AliMCEventHandler();
      mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file
      mgr->SetMCtruthEventHandler(mcHandler);
    }

    // AOD output handler
    AliAODHandler* aodoutHandler   = new AliAODHandler();
    aodoutHandler->SetOutputFileName("aod.root");
    //aodoutHandler->SetCreateNonStandardAOD();
    mgr->SetOutputEventHandler(aodoutHandler);
    
    //input
    if(kInputData == "ESD"){
      // ESD handler
      AliESDInputHandler *esdHandler = new AliESDInputHandler();
      mgr->SetInputEventHandler(esdHandler);
    }
    if(kInputData == "AOD"){
      // AOD handler
      AliAODInputHandler *aodHandler = new AliAODInputHandler();
      mgr->SetInputEventHandler(aodHandler);
    }

    //mgr->SetDebugLevel(-1); // For debugging, do not uncomment if you want no messages.

    //-------------------------------------------------------------------------
    //Define task, put here any other task that you want to use.
    //-------------------------------------------------------------------------
//    AliAnaPi0Conv * task = new AliAnaPi0Conv("Pi0") ;

    AliAnalysisTaskTaggedPhotons * taskPHOS = new AliAnalysisTaskTaggedPhotons("TaggedPHOS");
    taskPHOS->SetPHOS(kTRUE);		
    mgr->AddTask(taskPHOS);

    AliAnalysisTaskTaggedPhotons * taskEMCAL = new AliAnalysisTaskTaggedPhotons("TaggedEMCAL");
    taskEMCAL->SetPHOS(kFALSE);
    mgr->AddTask(taskEMCAL);

    
    // Create containers for input/output
    AliAnalysisDataContainer *cinput1 = mgr->CreateContainer("cchain",TChain::Class(), 
							     AliAnalysisManager::kInputContainer);
    AliAnalysisDataContainer *coutput1 = mgr->CreateContainer("tree", TTree::Class(),
							      AliAnalysisManager::kOutputContainer, "default");
    AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("histosP", TList::Class(),
							      AliAnalysisManager::kOutputContainer, "histosPHOS.root");
    AliAnalysisDataContainer *coutput3 = mgr->CreateContainer("histosE", TList::Class(),
                                                              AliAnalysisManager::kOutputContainer, "histosEMCAL.root");
    
    mgr->ConnectInput  (taskPHOS,     0, cinput1);
    mgr->ConnectOutput (taskPHOS,     0, coutput1 );
    mgr->ConnectOutput (taskPHOS,     1, coutput2 );
    mgr->ConnectInput  (taskEMCAL,     0, cinput1);
    mgr->ConnectOutput (taskEMCAL,     0, coutput1 );
    mgr->ConnectOutput (taskEMCAL,     1, coutput3 );

  
    //-----------------------
    // Run the analysis
    //-----------------------    
    TString smode = "";
    if (mode==mLocal || mode == mLocalCAF) 
      smode = "local";
    else if (mode==mPROOF) 
      smode = "proof";
    else if (mode==mGRID) 
      smode = "grid";
    
    mgr->InitAnalysis();
    mgr->PrintStatus();
    mgr->StartAnalysis("local",chain);
//    mgr->StartAnalysis(smode.Data(),chain);

cout <<" Analysis ended sucessfully "<< endl ;

  }
  else cout << "Chain was not produced ! "<<endl;
  
}

void  LoadLibraries(const anaModes mode) {
  
  //--------------------------------------
  // Load the needed libraries most of them already loaded by aliroot
  //--------------------------------------
  gSystem->Load("libTree.so");
  gSystem->Load("libGeom.so");
  gSystem->Load("libVMC.so");
  gSystem->Load("libXMLIO.so");
  
  //----------------------------------------------------------
  // >>>>>>>>>>> Local mode <<<<<<<<<<<<<< 
  //----------------------------------------------------------
  if (mode==mLocal || mode == mLocalCAF || mode == mGRID) {
    //--------------------------------------------------------
    // If you want to use already compiled libraries 
    // in the aliroot distribution
    //--------------------------------------------------------
    //gSystem->Load("libSTEERBase");
    //gSystem->Load("libESD");
    //gSystem->Load("libAOD");
    //gSystem->Load("libANALYSIS");
    //gSystem->Load("libANALYSISalice");
    //gSystem->Load("libPHOSUtils");
    //gSystem->Load("libPWG4PartCorrBase");
    //gSystem->Load("libPWG4PartCorrDep");
	
    //--------------------------------------------------------
    //If you want to use root and par files from aliroot
    //--------------------------------------------------------  
    SetupPar("STEERBase");
    SetupPar("ESD");
    SetupPar("AOD");
    SetupPar("ANALYSIS");
    SetupPar("ANALYSISalice");
//If your analysis needs PHOS geometry uncomment following lines
	SetupPar("PHOSUtils");
//	//Create Geometry
    TGeoManager::Import("geometry.root") ; //need file "geometry.root" in local dir!!!!
     SetupPar("PWG4PartCorrBase");
     SetupPar("PWG4PartCorrDep");
  }

  //---------------------------------------------------------
  // <<<<<<<<<< PROOF mode >>>>>>>>>>>>
  //---------------------------------------------------------
  else if (mode==mPROOF) {
    //
    // Connect to proof
    // Put appropriate username here
    // TProof::Reset("proof://mgheata@lxb6046.cern.ch"); 
    TProof::Open("proof://mgheata@lxb6046.cern.ch");
    
    //    gProof->ClearPackages();
    //    gProof->ClearPackage("ESD");
    //    gProof->ClearPackage("AOD");
    //    gProof->ClearPackage("ANALYSIS");   
    //    gProof->ClearPackage("PWG4PartCorrBase");
    //    gProof->ClearPackage("PWG4PartCorrDep");
    
    // Enable the STEERBase Package
    gProof->UploadPackage("STEERBase.par");
    gProof->EnablePackage("STEERBase");
    // Enable the ESD Package
    gProof->UploadPackage("ESD.par");
    gProof->EnablePackage("ESD");
    // Enable the AOD Package
    gProof->UploadPackage("AOD.par");
    gProof->EnablePackage("AOD");
    // Enable the Analysis Package
    gProof->UploadPackage("ANALYSIS.par");
    gProof->EnablePackage("ANALYSIS");
	// Enable the PHOS geometry Package
    //gProof->UploadPackage("PHOSUtils.par");
    //gProof->EnablePackage("PHOSUtils");
    // Enable PartCorr analysis
    gProof->UploadPackage("PWG4PartCorrBase.par");
    gProof->EnablePackage("PWG4PartCorrBase");
	gProof->UploadPackage("PWG4PartCorrDep.par");
    gProof->EnablePackage("PWG4PartCorrDep");    
    gProof->ShowEnabledPackages();
  }  
  
}

void SetupPar(char* pararchivename)
{
  //Load par files, create analysis libraries
  //For testing, if par file already decompressed and modified
  //classes then do not decompress.
 
  TString cdir(Form("%s", gSystem->WorkingDirectory() )) ; 
  TString parpar(Form("%s.par", pararchivename)) ; 
  if ( gSystem->AccessPathName(parpar.Data()) ) {
    gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ;
    TString processline(Form(".! make %s", parpar.Data())) ; 
    gROOT->ProcessLine(processline.Data()) ;
    gSystem->ChangeDirectory(cdir) ; 
    processline = Form(".! mv $ALICE_ROOT/%s .", parpar.Data()) ;
    gROOT->ProcessLine(processline.Data()) ;
  } 
  if ( gSystem->AccessPathName(pararchivename) ) {  
    TString processline = Form(".! tar xvzf %s",parpar.Data()) ;
    gROOT->ProcessLine(processline.Data());
  }
  
  TString ocwd = gSystem->WorkingDirectory();
  gSystem->ChangeDirectory(pararchivename);
  
  // check for BUILD.sh and execute
  if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) {
    printf("*******************************\n");
    printf("*** Building PAR archive    ***\n");
    cout<<pararchivename<<endl;
    printf("*******************************\n");
    
    if (gSystem->Exec("PROOF-INF/BUILD.sh")) {
      Error("runProcess","Cannot Build the PAR Archive! - Abort!");
      return -1;
    }
  }
  // check for SETUP.C and execute
  if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) {
    printf("*******************************\n");
    printf("*** Setup PAR archive       ***\n");
    cout<<pararchivename<<endl;
    printf("*******************************\n");
    gROOT->Macro("PROOF-INF/SETUP.C");
  }
  
  gSystem->ChangeDirectory(ocwd.Data());
  printf("Current dir: %s\n", ocwd.Data());
}


void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){
  //Fills chain with data
  TString ocwd = gSystem->WorkingDirectory();
  
  //-----------------------------------------------------------
  //Analysis of CAF data locally and with PROOF
  //-----------------------------------------------------------
  if(mode ==mPROOF || mode ==mLocalCAF){
    // Chain from CAF
    gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C");
    // The second parameter is the number of input files in the chain
    chain = CreateESDChain("ESD12001.txt", 5);  
  }
  
  //---------------------------------------
  //Local files analysis
  //---------------------------------------
  else if(mode == mLocal){    
    //If you want to add several ESD files sitting in a common directory INDIR
    //Specify as environmental variables the directory (INDIR), the number of files 
    //to analyze (NEVENT) and the pattern name of the directories with files (PATTERN)

    if(gSystem->Getenv("INDIR"))  
      kInDir = gSystem->Getenv("INDIR") ; 
    else cout<<"INDIR not set, use default: "<<kInDir<<endl;	
    
    if(gSystem->Getenv("PATTERN"))   
      kPattern = gSystem->Getenv("PATTERN") ; 
    else  cout<<"PATTERN not set, use default: "<<kPattern<<endl;
    
    if(gSystem->Getenv("NEVENT"))
      kEvent = atoi(gSystem->Getenv("NEVENT")) ;
    else cout<<"NEVENT not set, use default: "<<kEvent<<endl;
    
    //Check if env variables are set and are correct
    if ( kInDir  && kEvent) {
      printf("Get %d files from directory %s\n",kEvent,kInDir);
      if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist
	printf("%s does not exist\n", kInDir) ;
	return ;
      }
      cout<<"INDIR : "<<kInDir<<endl;
      cout<<"NEVENT : "<<kEvent<<endl;
      cout<<"PATTERN: " <<kPattern<<endl;
      
      TString datafile="";
      if(kInputData == "ESD") datafile = "AliESDs.root" ;
      else if(kInputData == "AOD") datafile = "aod.root" ;
      else if(kInputData == "MC")  datafile = "galice.root" ;
      
      //Loop on ESD files, add them to chain
      Int_t event =0;
      Int_t skipped=0 ; 
      char file[120] ;
      char filexs[120] ;
      
      for (event = 0 ; event < kEvent ; event++) {
	sprintf(file, "%s/%s%d/%s", kInDir,kPattern,event,datafile.Data()) ; 
	sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ; 
	TFile * fESD = 0 ; 
	//Check if file exists and add it, if not skip it
	if ( fESD = TFile::Open(file)) {
	  if ( fESD->Get(kTreeName) ) { 
	    printf("++++ Adding %s\n", file) ;
	    chain->AddFile(file);
	    chainxs->Add(filexs) ; 
	  }
	}
	else { 
	  printf("---- Skipping %s\n", file) ;
	  skipped++ ;
	}
      }
      printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped*100) ; 	
    }
    else {
      TString input = "AliESDs.root" ;
      cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl;
      chain->AddFile(input);
    }
    
  }// local files analysis
  
  //------------------------------
  //GRID xml files
  //-----------------------------
  else if(mode == mGRID){
    //Get colection file. It is specified by the environmental
    //variable XML

    if(gSystem->Getenv("XML") )
      kXML = gSystem->Getenv("XML");
    else
      sprintf(kXML, "collection.xml") ; 
    
    if (!TFile::Open(kXML)) {
      printf("No collection file with name -- %s -- was found\n",kXML);
      return ;
    }
    else cout<<"XML file "<<kXML<<endl;

    //Load necessary libraries and connect to the GRID
    gSystem->Load("libNetx.so") ; 
    gSystem->Load("libRAliEn.so"); 
    TGrid::Connect("alien://") ;

    //Feed Grid with collection file
    //TGridCollection * collection =  (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML));
    TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML);
    if (! collection) {
      AliError(Form("%s not found", kXML)) ; 
      return kFALSE ; 
    }
    TGridResult* result = collection->GetGridResult("",0 ,0);
   
    // Makes the ESD chain 
    printf("*** Getting the Chain       ***\n");
    for (Int_t index = 0; index < result->GetEntries(); index++) {
      TString alienURL = result->GetKey(index, "turl") ; 
      cout << "================== " << alienURL << endl ; 
      chain->Add(alienURL) ; 
      alienURL.ReplaceAll("AliESDs.root",kXSFileName);
      chainxs->Add(alienURL) ; 
    }
  }// xml analysis
  
  gSystem->ChangeDirectory(ocwd.Data());
}

//________________________________________________
void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr)
{
  // Read the PYTHIA statistics from the file pyxsec.root created by
  // the function WriteXsection():
  // integrated cross section (xsection) and
  // the  number of Pyevent() calls (ntrials)
  // and calculate the weight per one event xsection/ntrials
  // The spectrum calculated by a user should be
  // multiplied by this weight, something like this:
  // TH1F *userSpectrum ... // book and fill the spectrum
  // userSpectrum->Scale(weight)
  //
  // Yuri Kharlov 19 June 2007
  // Gustavo Conesa 15 April 2008
  Double_t xsection = 0;
  UInt_t    ntrials = 0;
  xs = 0;
  ntr = 0;
  
  Int_t nfiles =  tree->GetEntries()  ;
  if (tree && nfiles > 0) {
    tree->SetBranchAddress("xsection",&xsection);
    tree->SetBranchAddress("ntrials",&ntrials);
    for(Int_t i = 0; i < nfiles; i++){
      tree->GetEntry(i);
      xs += xsection ;
      ntr += ntrials ;
      cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl; 
    }
    
    xs =   xs /  nfiles;
    ntr =  ntr / nfiles;
    cout << "-----------------------------------------------------------------"<<endl;
    cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl; 
    cout << "-----------------------------------------------------------------"<<endl;
  } 
  else cout << " >>>> Empty tree !!!! <<<<< "<<endl;
  
}
Commit	Line	Data
b83cc5a7	1	/* $Id: $ */
	2	//--------------------------------------------------
	3	// Example macro to do analysis with the
	4	// analysis classes in PWG4PartCorr
	5	// Can be executed with Root and AliRoot
	6	//
	7	// Pay attention to the options and definitions
	8	// set in the lines below
	9	//
	10	// Author : Gustavo Conesa Balbastre (INFN-LNF)
	11	//
	12	//-------------------------------------------------
	13	enum anaModes {mLocal, mLocalCAF,mPROOF,mGRID};
	14	//mLocal: Analyze locally files in your computer
	15	//mLocalCAF: Analyze locally CAF files
	16	//mPROOF: Analyze CAF files with PROOF
	17
	18	//---------------------------------------------------------------------------
	19	//Settings to read locally several files, only for "mLocal" mode
	20	//The different values are default, they can be set with environmental
	21	//variables: INDIR, PATTERN, NEVENT, respectivelly
	22	char * kInDir = "/home/blau/data";
	23	char * kPattern = ""; // Data are in diles /data/Run0,
	24	Int_t kEvent = 3; // Number of files
	25	//---------------------------------------------------------------------------
	26	//Collection file for grid analysis
	27	char * kXML = "collection.xml";
	28	//---------------------------------------------------------------------------
	29	//Scale histograms from file. Change to kTRUE when xsection file exists
	30	//Put name of file containing xsection
	31	//Put number of events per ESD file
	32	//This is an specific case for normalization of Pythia files.
	33	const Bool_t kGetXSectionFromFileAndScale = kFALSE ;
	34	const char * kXSFileName = "pyxsec.root";
	35	//const Int_t kNumberOfEventsPerFile = 100;
	36	//---------------------------------------------------------------------------
	37
	38	const Bool_t kMC = kTRUE; //With real data kMC = kFALSE
	39	const TString kInputData = "ESD";//ESD, AOD, MC
	40	TString kTreeName = "esdTree";
	41
	42	void anaPhotonTagging(Int_t mode=mGRID, TString configName = "ConfigAnalysisPhoton")
	43	{
	44	// Main
	45
	46	//--------------------------------------------------------------------
	47	// Load analysis libraries
	48	// Look at the method below,
	49	// change whatever you need for your analysis case
	50	// ------------------------------------------------------------------
	51	LoadLibraries(mode) ;
	52
	53	//-------------------------------------------------------------------------------------------------
	54	//Create chain from ESD and from cross sections files, look below for options.
	55	//-------------------------------------------------------------------------------------------------
	56	if(kInputData == "ESD") kTreeName = "esdTree" ;
	57	else if(kInputData == "AOD") kTreeName = "aodTree" ;
	58	else if (kInputData == "MC") kTreeName = "TE" ;
	59	else {
	60	cout<<"Wrong data type "<<kInputData<<endl;
	61	break;
	62	}
	63
	64	TChain *chain = new TChain(kTreeName) ;
65	TChain * chainxs = new TChain("Xsection") ;
66	CreateChain(mode, chain, chainxs);
67
68	if(chain){
69	AliLog::SetGlobalLogLevel(AliLog::kError);//Minimum prints on screen
70
71	//--------------------------------------
72	// Make the analysis manager
73	//-------------------------------------
74	AliAnalysisManager *mgr = new AliAnalysisManager("Manager", "Manager");
75	// MC handler
76	if(kMC \|\| kInputData == "MC"){
77	AliMCEventHandler* mcHandler = new AliMCEventHandler();
78	mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file
79	mgr->SetMCtruthEventHandler(mcHandler);
80	}
81
82	// AOD output handler
83	AliAODHandler* aodoutHandler = new AliAODHandler();
84	aodoutHandler->SetOutputFileName("aod.root");
85	//aodoutHandler->SetCreateNonStandardAOD();
86	mgr->SetOutputEventHandler(aodoutHandler);
87
88	//input
89	if(kInputData == "ESD"){
90	// ESD handler
91	AliESDInputHandler *esdHandler = new AliESDInputHandler();
92	mgr->SetInputEventHandler(esdHandler);
93	}
94	if(kInputData == "AOD"){
95	// AOD handler
96	AliAODInputHandler *aodHandler = new AliAODInputHandler();
97	mgr->SetInputEventHandler(aodHandler);
98	}
99
100	//mgr->SetDebugLevel(-1); // For debugging, do not uncomment if you want no messages.
101
102	//-------------------------------------------------------------------------
103	//Define task, put here any other task that you want to use.
104	//-------------------------------------------------------------------------
105	// AliAnaPi0Conv * task = new AliAnaPi0Conv("Pi0") ;
106
107	AliAnalysisTaskTaggedPhotons * taskPHOS = new AliAnalysisTaskTaggedPhotons("TaggedPHOS");
108	taskPHOS->SetPHOS(kTRUE);
109	mgr->AddTask(taskPHOS);
110
111	AliAnalysisTaskTaggedPhotons * taskEMCAL = new AliAnalysisTaskTaggedPhotons("TaggedEMCAL");
112	taskEMCAL->SetPHOS(kFALSE);
113	mgr->AddTask(taskEMCAL);
114
115
116	// Create containers for input/output
117	AliAnalysisDataContainer *cinput1 = mgr->CreateContainer("cchain",TChain::Class(),
118	AliAnalysisManager::kInputContainer);
119	AliAnalysisDataContainer *coutput1 = mgr->CreateContainer("tree", TTree::Class(),
120	AliAnalysisManager::kOutputContainer, "default");
121	AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("histosP", TList::Class(),
122	AliAnalysisManager::kOutputContainer, "histosPHOS.root");
123	AliAnalysisDataContainer *coutput3 = mgr->CreateContainer("histosE", TList::Class(),
124	AliAnalysisManager::kOutputContainer, "histosEMCAL.root");
125
126	mgr->ConnectInput (taskPHOS, 0, cinput1);
127	mgr->ConnectOutput (taskPHOS, 0, coutput1 );
128	mgr->ConnectOutput (taskPHOS, 1, coutput2 );
129	mgr->ConnectInput (taskEMCAL, 0, cinput1);
130	mgr->ConnectOutput (taskEMCAL, 0, coutput1 );
131	mgr->ConnectOutput (taskEMCAL, 1, coutput3 );
132
133
134
135	//-----------------------
136	// Run the analysis
137	//-----------------------
138	TString smode = "";
139	if (mode==mLocal \|\| mode == mLocalCAF)
140	smode = "local";
141	else if (mode==mPROOF)
142	smode = "proof";
143	else if (mode==mGRID)
144	smode = "grid";
145
146	mgr->InitAnalysis();
147	mgr->PrintStatus();
148	mgr->StartAnalysis("local",chain);
149	// mgr->StartAnalysis(smode.Data(),chain);
150
151	cout <<" Analysis ended sucessfully "<< endl ;
152
153	}
154	else cout << "Chain was not produced ! "<<endl;
155
156	}
157
158	void LoadLibraries(const anaModes mode) {
159
160	//--------------------------------------
161	// Load the needed libraries most of them already loaded by aliroot
162	//--------------------------------------
163	gSystem->Load("libTree.so");
164	gSystem->Load("libGeom.so");
165	gSystem->Load("libVMC.so");
166	gSystem->Load("libXMLIO.so");
167
168	//----------------------------------------------------------
169	// >>>>>>>>>>> Local mode <<<<<<<<<<<<<<
170	//----------------------------------------------------------
171	if (mode==mLocal \|\| mode == mLocalCAF \|\| mode == mGRID) {
172	//--------------------------------------------------------
173	// If you want to use already compiled libraries
174	// in the aliroot distribution
175	//--------------------------------------------------------
176	//gSystem->Load("libSTEERBase");
177	//gSystem->Load("libESD");
178	//gSystem->Load("libAOD");
179	//gSystem->Load("libANALYSIS");
180	//gSystem->Load("libANALYSISalice");
181	//gSystem->Load("libPHOSUtils");
182	//gSystem->Load("libPWG4PartCorrBase");
183	//gSystem->Load("libPWG4PartCorrDep");
184
185	//--------------------------------------------------------
186	//If you want to use root and par files from aliroot
187	//--------------------------------------------------------
188	SetupPar("STEERBase");
189	SetupPar("ESD");
190	SetupPar("AOD");
191	SetupPar("ANALYSIS");
192	SetupPar("ANALYSISalice");
193	//If your analysis needs PHOS geometry uncomment following lines
194	SetupPar("PHOSUtils");
195	// //Create Geometry
196	TGeoManager::Import("geometry.root") ; //need file "geometry.root" in local dir!!!!
197	SetupPar("PWG4PartCorrBase");
198	SetupPar("PWG4PartCorrDep");
199	}
200
201	//---------------------------------------------------------
202	// <<<<<<<<<< PROOF mode >>>>>>>>>>>>
203	//---------------------------------------------------------
204	else if (mode==mPROOF) {
205	//
206	// Connect to proof
207	// Put appropriate username here
208	// TProof::Reset("proof://mgheata@lxb6046.cern.ch");
209	TProof::Open("proof://mgheata@lxb6046.cern.ch");
210
211	// gProof->ClearPackages();
212	// gProof->ClearPackage("ESD");
213	// gProof->ClearPackage("AOD");
214	// gProof->ClearPackage("ANALYSIS");
215	// gProof->ClearPackage("PWG4PartCorrBase");
216	// gProof->ClearPackage("PWG4PartCorrDep");
217
218	// Enable the STEERBase Package
219	gProof->UploadPackage("STEERBase.par");
220	gProof->EnablePackage("STEERBase");
221	// Enable the ESD Package
222	gProof->UploadPackage("ESD.par");
223	gProof->EnablePackage("ESD");
224	// Enable the AOD Package
225	gProof->UploadPackage("AOD.par");
226	gProof->EnablePackage("AOD");
227	// Enable the Analysis Package
228	gProof->UploadPackage("ANALYSIS.par");
229	gProof->EnablePackage("ANALYSIS");
230	// Enable the PHOS geometry Package
231	//gProof->UploadPackage("PHOSUtils.par");
232	//gProof->EnablePackage("PHOSUtils");
233	// Enable PartCorr analysis
234	gProof->UploadPackage("PWG4PartCorrBase.par");
235	gProof->EnablePackage("PWG4PartCorrBase");
236	gProof->UploadPackage("PWG4PartCorrDep.par");
237	gProof->EnablePackage("PWG4PartCorrDep");
238	gProof->ShowEnabledPackages();
239	}
240
241	}
242
243	void SetupPar(char* pararchivename)
244	{
245	//Load par files, create analysis libraries
246	//For testing, if par file already decompressed and modified
247	//classes then do not decompress.
248
249	TString cdir(Form("%s", gSystem->WorkingDirectory() )) ;
250	TString parpar(Form("%s.par", pararchivename)) ;
251	if ( gSystem->AccessPathName(parpar.Data()) ) {
252	gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ;
253	TString processline(Form(".! make %s", parpar.Data())) ;
254	gROOT->ProcessLine(processline.Data()) ;
255	gSystem->ChangeDirectory(cdir) ;
256	processline = Form(".! mv $ALICE_ROOT/%s .", parpar.Data()) ;
257	gROOT->ProcessLine(processline.Data()) ;
258	}
259	if ( gSystem->AccessPathName(pararchivename) ) {
260	TString processline = Form(".! tar xvzf %s",parpar.Data()) ;
261	gROOT->ProcessLine(processline.Data());
262	}
263
264	TString ocwd = gSystem->WorkingDirectory();
265	gSystem->ChangeDirectory(pararchivename);
266
267	// check for BUILD.sh and execute
268	if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) {
269	printf("*******************************\n");
270	printf("* Building PAR archive *\n");
271	cout<<pararchivename<<endl;
272	printf("*******************************\n");
273
274	if (gSystem->Exec("PROOF-INF/BUILD.sh")) {
275	Error("runProcess","Cannot Build the PAR Archive! - Abort!");
276	return -1;
277	}
278	}
279	// check for SETUP.C and execute
280	if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) {
281	printf("*******************************\n");
282	printf("* Setup PAR archive *\n");
283	cout<<pararchivename<<endl;
284	printf("*******************************\n");
285	gROOT->Macro("PROOF-INF/SETUP.C");
286	}
287
288	gSystem->ChangeDirectory(ocwd.Data());
289	printf("Current dir: %s\n", ocwd.Data());
290	}
291
292
293
294	void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){
295	//Fills chain with data
296	TString ocwd = gSystem->WorkingDirectory();
297
298	//-----------------------------------------------------------
299	//Analysis of CAF data locally and with PROOF
300	//-----------------------------------------------------------
301	if(mode ==mPROOF \|\| mode ==mLocalCAF){
302	// Chain from CAF
303	gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C");
304	// The second parameter is the number of input files in the chain
305	chain = CreateESDChain("ESD12001.txt", 5);
306	}
307
308	//---------------------------------------
309	//Local files analysis
310	//---------------------------------------
311	else if(mode == mLocal){
312	//If you want to add several ESD files sitting in a common directory INDIR
313	//Specify as environmental variables the directory (INDIR), the number of files
314	//to analyze (NEVENT) and the pattern name of the directories with files (PATTERN)
315
316	if(gSystem->Getenv("INDIR"))
317	kInDir = gSystem->Getenv("INDIR") ;
318	else cout<<"INDIR not set, use default: "<<kInDir<<endl;
319
320	if(gSystem->Getenv("PATTERN"))
321	kPattern = gSystem->Getenv("PATTERN") ;
322	else cout<<"PATTERN not set, use default: "<<kPattern<<endl;
323
324	if(gSystem->Getenv("NEVENT"))
325	kEvent = atoi(gSystem->Getenv("NEVENT")) ;
326	else cout<<"NEVENT not set, use default: "<<kEvent<<endl;
327
328	//Check if env variables are set and are correct
329	if ( kInDir && kEvent) {
330	printf("Get %d files from directory %s\n",kEvent,kInDir);
331	if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist
332	printf("%s does not exist\n", kInDir) ;
333	return ;
334	}
335	cout<<"INDIR : "<<kInDir<<endl;
336	cout<<"NEVENT : "<<kEvent<<endl;
337	cout<<"PATTERN: " <<kPattern<<endl;
338
339	TString datafile="";
340	if(kInputData == "ESD") datafile = "AliESDs.root" ;
341	else if(kInputData == "AOD") datafile = "aod.root" ;
342	else if(kInputData == "MC") datafile = "galice.root" ;
343
344	//Loop on ESD files, add them to chain
345	Int_t event =0;
346	Int_t skipped=0 ;
347	char file[120] ;
348	char filexs[120] ;
349
350	for (event = 0 ; event < kEvent ; event++) {
351	sprintf(file, "%s/%s%d/%s", kInDir,kPattern,event,datafile.Data()) ;
352	sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ;
353	TFile * fESD = 0 ;
354	//Check if file exists and add it, if not skip it
355	if ( fESD = TFile::Open(file)) {
356	if ( fESD->Get(kTreeName) ) {
357	printf("++++ Adding %s\n", file) ;
358	chain->AddFile(file);
359	chainxs->Add(filexs) ;
360	}
361	}
362	else {
363	printf("---- Skipping %s\n", file) ;
364	skipped++ ;
365	}
366	}
367	printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped*100) ;
368	}
369	else {
370	TString input = "AliESDs.root" ;
371	cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl;
372	chain->AddFile(input);
373	}
374
375	}// local files analysis
376
377	//------------------------------
378	//GRID xml files
379	//-----------------------------
380	else if(mode == mGRID){
381	//Get colection file. It is specified by the environmental
382	//variable XML
383
384	if(gSystem->Getenv("XML") )
385	kXML = gSystem->Getenv("XML");
386	else
387	sprintf(kXML, "collection.xml") ;
388
389	if (!TFile::Open(kXML)) {
390	printf("No collection file with name -- %s -- was found\n",kXML);
391	return ;
392	}
393	else cout<<"XML file "<<kXML<<endl;
394
395	//Load necessary libraries and connect to the GRID
396	gSystem->Load("libNetx.so") ;
397	gSystem->Load("libRAliEn.so");
398	TGrid::Connect("alien://") ;
399
400	//Feed Grid with collection file
401	//TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML));
402	TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML);
403	if (! collection) {
404	AliError(Form("%s not found", kXML)) ;
405	return kFALSE ;
406	}
407	TGridResult* result = collection->GetGridResult("",0 ,0);
408
409	// Makes the ESD chain
410	printf("* Getting the Chain *\n");
411	for (Int_t index = 0; index < result->GetEntries(); index++) {
412	TString alienURL = result->GetKey(index, "turl") ;
413	cout << "================== " << alienURL << endl ;
414	chain->Add(alienURL) ;
415	alienURL.ReplaceAll("AliESDs.root",kXSFileName);
416	chainxs->Add(alienURL) ;
417	}
418	}// xml analysis
419
420	gSystem->ChangeDirectory(ocwd.Data());
421	}
422
423	//________________________________________________
424	void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr)
425	{
426	// Read the PYTHIA statistics from the file pyxsec.root created by
427	// the function WriteXsection():
428	// integrated cross section (xsection) and
429	// the number of Pyevent() calls (ntrials)
430	// and calculate the weight per one event xsection/ntrials
431	// The spectrum calculated by a user should be
432	// multiplied by this weight, something like this:
433	// TH1F *userSpectrum ... // book and fill the spectrum
434	// userSpectrum->Scale(weight)
435	//
436	// Yuri Kharlov 19 June 2007
437	// Gustavo Conesa 15 April 2008
438	Double_t xsection = 0;
439	UInt_t ntrials = 0;
440	xs = 0;
441	ntr = 0;
442
443	Int_t nfiles = tree->GetEntries() ;
444	if (tree && nfiles > 0) {
445	tree->SetBranchAddress("xsection",&xsection);
446	tree->SetBranchAddress("ntrials",&ntrials);
447	for(Int_t i = 0; i < nfiles; i++){
448	tree->GetEntry(i);
449	xs += xsection ;
450	ntr += ntrials ;
451	cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl;
452	}
453
454	xs = xs / nfiles;
455	ntr = ntr / nfiles;
456	cout << "-----------------------------------------------------------------"<<endl;
457	cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl;
458	cout << "-----------------------------------------------------------------"<<endl;
459	}
460	else cout << " >>>> Empty tree !!!! <<<<< "<<endl;
461
462	}
463
464
465