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

/* $Id:  $ */
//--------------------------------------------------
// Example macro to do analysis with the 
// AliAnalysisTaksSE
// 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 = "/user/data/files/"; 
char * kPattern = ""; // Data are in files kInDir/kPattern+i 
Int_t kEvent = 1; // 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 anaExampleTask(Int_t mode=mLocal)
{
  // 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);
      if( kInputData == "MC") mgr->SetInputEventHandler(NULL);
    }

    // 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

    //-------------------------------------------------------------------------
    //Define task, put here any other task that you want to use.
    //-------------------------------------------------------------------------
    AliAnalysisTaskPHOSExample * taskex = new AliAnalysisTaskPHOSExample ("Gamma");
    mgr->AddTask(taskex);
    
    // Create containers for input/output
    AliAnalysisDataContainer *cinput1 = mgr->GetCommonInputContainer();
    AliAnalysisDataContainer *coutput1 = mgr->GetCommonOutputContainer();
    AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("histos", TList::Class(),
							      AliAnalysisManager::kOutputContainer, "histos.root");
    
    mgr->ConnectInput  (taskex,     0, cinput1);
    mgr->ConnectOutput (taskex,     0, coutput1 );
    mgr->ConnectOutput (taskex,     1, coutput2 );
  
    //------------------------  
    //Scaling task
    //-----------------------
    Int_t nfiles = chainxs->GetEntries();
    if(kGetXSectionFromFileAndScale && nfiles > 0){
      //Get the cross section
      Double_t xsection=0; 
      Float_t ntrials = 0;
      GetAverageXsection(chainxs, xsection, ntrials);
      
      AliAnaScale * scale = new AliAnaScale("scale") ;
      scale->Set(xsection/ntrials/nfiles) ;
      scale->MakeSumw2(kFALSE);//If you want histograms with error bars set to kTRUE
      //scale->SetDebugLevel(2);
      mgr->AddTask(scale);
		
      AliAnalysisDataContainer *coutput3 = mgr->CreateContainer("histosscaled", TList::Class(),
								AliAnalysisManager::kOutputContainer, "gammahistosscaled.root");
      mgr->ConnectInput  (scale,     0, coutput2);
      mgr->ConnectOutput (scale,     0, coutput3 );
    }
    
    //-----------------------
    // Run the analysis
    //-----------------------    
    TString smode = "";
    if (mode==mLocal || mode == mLocalCAF) 
      smode = "local";
    else if (mode==mPROOF) 
      smode = "proof";
    else if (mode==mGRID) 
      smode = "local";
    
    mgr->InitAnalysis();
    mgr->PrintStatus();
    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("libEMCALUtils");	  
    //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");
    SetupPar("PHOSUtils");
	SetupPar("EMCALUtils");
    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");
    
    // 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 PHOSUtils Package
	gProof->UploadPackage("PHOSUtils.par");
	gProof->EnablePackage("PHOSUtils");
	// Enable the EMCALUtils Package
	gProof->UploadPackage("EMCALUtils.par");
	gProof->EnablePackage("EMCALUtils");
    // 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 /tmp/%s .", parpar.Data()) ;
	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) ; 	
    }
    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
1e1befe8	1	/* $Id: $ */
1e1befe8	2	//--------------------------------------------------
d92b41ad	3	// Example macro to do analysis with the
	4	// AliAnalysisTaksSE
	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
1e1befe8	22	char * kInDir = "/user/data/files/";
1e1befe8	23	char * kPattern = ""; // Data are in files kInDir/kPattern+i
d92b41ad	24	Int_t kEvent = 1; // 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
1e1befe8	39	const TString kInputData = "ESD";//ESD, AOD, MC
1e1befe8	40	TString kTreeName = "esdTree";
d92b41ad	41
	42	void anaExampleTask(Int_t mode=mLocal)
	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	//-------------------------------------------------------------------------------------------------
1e1befe8	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) ;
d92b41ad	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
1e1befe8	76	if(kMC \|\| kInputData == "MC"){
d92b41ad	77	AliMCEventHandler* mcHandler = new AliMCEventHandler();
377108c5	78	mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file
d92b41ad	79	mgr->SetMCtruthEventHandler(mcHandler);
1e1befe8	80	if( kInputData == "MC") mgr->SetInputEventHandler(NULL);
d92b41ad	81	}
	82
	83	// AOD output handler
	84	AliAODHandler* aodoutHandler = new AliAODHandler();
	85	aodoutHandler->SetOutputFileName("aod.root");
	86	//aodoutHandler->SetCreateNonStandardAOD();
	87	mgr->SetOutputEventHandler(aodoutHandler);
	88
	89	//input
	90	if(kInputData == "ESD"){
	91	// ESD handler
	92	AliESDInputHandler *esdHandler = new AliESDInputHandler();
	93	mgr->SetInputEventHandler(esdHandler);
	94	}
	95	if(kInputData == "AOD"){
	96	// AOD handler
	97	AliAODInputHandler *aodHandler = new AliAODInputHandler();
	98	mgr->SetInputEventHandler(aodHandler);
	99	}
	100
1e1befe8	101	//mgr->SetDebugLevel(-1); // For debugging
d92b41ad	102
	103	//-------------------------------------------------------------------------
	104	//Define task, put here any other task that you want to use.
	105	//-------------------------------------------------------------------------
	106	AliAnalysisTaskPHOSExample * taskex = new AliAnalysisTaskPHOSExample ("Gamma");
	107	mgr->AddTask(taskex);
	108
	109	// Create containers for input/output
8a546c82	110	AliAnalysisDataContainer *cinput1 = mgr->GetCommonInputContainer();
8a546c82	111	AliAnalysisDataContainer *coutput1 = mgr->GetCommonOutputContainer();
d92b41ad	112	AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("histos", TList::Class(),
	113	AliAnalysisManager::kOutputContainer, "histos.root");
	114
	115	mgr->ConnectInput (taskex, 0, cinput1);
	116	mgr->ConnectOutput (taskex, 0, coutput1 );
	117	mgr->ConnectOutput (taskex, 1, coutput2 );
	118
	119	//------------------------
	120	//Scaling task
	121	//-----------------------
	122	Int_t nfiles = chainxs->GetEntries();
	123	if(kGetXSectionFromFileAndScale && nfiles > 0){
	124	//Get the cross section
	125	Double_t xsection=0;
	126	Float_t ntrials = 0;
	127	GetAverageXsection(chainxs, xsection, ntrials);
	128
	129	AliAnaScale * scale = new AliAnaScale("scale") ;
e5dbdaf0	130	scale->Set(xsection/ntrials/nfiles) ;
1e1befe8	131	scale->MakeSumw2(kFALSE);//If you want histograms with error bars set to kTRUE
1e1befe8	132	//scale->SetDebugLevel(2);
d92b41ad	133	mgr->AddTask(scale);
1e1befe8	134
d92b41ad	135	AliAnalysisDataContainer *coutput3 = mgr->CreateContainer("histosscaled", TList::Class(),
	136	AliAnalysisManager::kOutputContainer, "gammahistosscaled.root");
	137	mgr->ConnectInput (scale, 0, coutput2);
	138	mgr->ConnectOutput (scale, 0, coutput3 );
	139	}
	140
	141	//-----------------------
	142	// Run the analysis
	143	//-----------------------
	144	TString smode = "";
	145	if (mode==mLocal \|\| mode == mLocalCAF)
	146	smode = "local";
	147	else if (mode==mPROOF)
	148	smode = "proof";
	149	else if (mode==mGRID)
29d1ef1d	150	smode = "local";
d92b41ad	151
	152	mgr->InitAnalysis();
	153	mgr->PrintStatus();
	154	mgr->StartAnalysis(smode.Data(),chain);
1e1befe8	155
	156	cout <<" Analysis ended sucessfully "<< endl ;
	157
d92b41ad	158	}
	159	else cout << "Chain was not produced ! "<<endl;
	160
	161	}
	162
	163	void LoadLibraries(const anaModes mode) {
	164
	165	//--------------------------------------
	166	// Load the needed libraries most of them already loaded by aliroot
	167	//--------------------------------------
	168	gSystem->Load("libTree.so");
	169	gSystem->Load("libGeom.so");
	170	gSystem->Load("libVMC.so");
	171	gSystem->Load("libXMLIO.so");
	172
	173	//----------------------------------------------------------
	174	// >>>>>>>>>>> Local mode <<<<<<<<<<<<<<
	175	//----------------------------------------------------------
	176	if (mode==mLocal \|\| mode == mLocalCAF \|\| mode == mGRID) {
	177	//--------------------------------------------------------
	178	// If you want to use already compiled libraries
	179	// in the aliroot distribution
	180	//--------------------------------------------------------
	181	//gSystem->Load("libSTEERBase");
	182	//gSystem->Load("libESD");
	183	//gSystem->Load("libAOD");
	184	//gSystem->Load("libANALYSIS");
	185	//gSystem->Load("libANALYSISalice");
e5dbdaf0	186	//gSystem->Load("libPHOSUtils");
e5dbdaf0	187	//gSystem->Load("libEMCALUtils");
3e0577a2	188	//gSystem->Load("libPWG4PartCorrBase");
1e1befe8	189	//gSystem->Load("libPWG4PartCorrDep");
3e0577a2	190
d92b41ad	191	//--------------------------------------------------------
	192	//If you want to use root and par files from aliroot
	193	//--------------------------------------------------------
	194	SetupPar("STEERBase");
	195	SetupPar("ESD");
	196	SetupPar("AOD");
	197	SetupPar("ANALYSIS");
	198	SetupPar("ANALYSISalice");
e5dbdaf0	199	SetupPar("PHOSUtils");
e5dbdaf0	200	SetupPar("EMCALUtils");
3e0577a2	201	SetupPar("PWG4PartCorrBase");
3e0577a2	202	SetupPar("PWG4PartCorrDep");
d92b41ad	203	}
	204
	205	//---------------------------------------------------------
	206	// <<<<<<<<<< PROOF mode >>>>>>>>>>>>
	207	//---------------------------------------------------------
	208	else if (mode==mPROOF) {
	209	//
	210	// Connect to proof
	211	// Put appropriate username here
	212	// TProof::Reset("proof://mgheata@lxb6046.cern.ch");
	213	TProof::Open("proof://mgheata@lxb6046.cern.ch");
	214
d92b41ad	215	// Enable the STEERBase Package
	216	gProof->UploadPackage("STEERBase.par");
	217	gProof->EnablePackage("STEERBase");
	218	// Enable the ESD Package
	219	gProof->UploadPackage("ESD.par");
	220	gProof->EnablePackage("ESD");
	221	// Enable the AOD Package
	222	gProof->UploadPackage("AOD.par");
	223	gProof->EnablePackage("AOD");
	224	// Enable the Analysis Package
	225	gProof->UploadPackage("ANALYSIS.par");
	226	gProof->EnablePackage("ANALYSIS");
e5dbdaf0	227	// Enable the PHOSUtils Package
	228	gProof->UploadPackage("PHOSUtils.par");
	229	gProof->EnablePackage("PHOSUtils");
	230	// Enable the EMCALUtils Package
	231	gProof->UploadPackage("EMCALUtils.par");
	232	gProof->EnablePackage("EMCALUtils");
3e0577a2	233	// Enable PartCorr analysis
	234	gProof->UploadPackage("PWG4PartCorrBase.par");
	235	gProof->EnablePackage("PWG4PartCorrBase");
	236	gProof->UploadPackage("PWG4PartCorrDep.par");
	237	gProof->EnablePackage("PWG4PartCorrDep");
d92b41ad	238	//
	239	gProof->ShowEnabledPackages();
	240	}
	241
	242	}
	243
	244	void SetupPar(char* pararchivename)
	245	{
	246	//Load par files, create analysis libraries
	247	//For testing, if par file already decompressed and modified
	248	//classes then do not decompress.
	249
	250	TString cdir(Form("%s", gSystem->WorkingDirectory() )) ;
	251	TString parpar(Form("%s.par", pararchivename)) ;
	252	if ( gSystem->AccessPathName(parpar.Data()) ) {
	253	gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ;
	254	TString processline(Form(".! make %s", parpar.Data())) ;
	255	gROOT->ProcessLine(processline.Data()) ;
	256	gSystem->ChangeDirectory(cdir) ;
1e1befe8	257	//processline = Form(".! mv /tmp/%s .", parpar.Data()) ;
1e1befe8	258	processline = Form(".! mv $ALICE_ROOT/%s .", parpar.Data()) ;
d92b41ad	259	gROOT->ProcessLine(processline.Data()) ;
	260	}
	261	if ( gSystem->AccessPathName(pararchivename) ) {
	262	TString processline = Form(".! tar xvzf %s",parpar.Data()) ;
	263	gROOT->ProcessLine(processline.Data());
	264	}
	265
	266	TString ocwd = gSystem->WorkingDirectory();
	267	gSystem->ChangeDirectory(pararchivename);
	268
	269	// check for BUILD.sh and execute
	270	if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) {
	271	printf("*******************************\n");
	272	printf("* Building PAR archive *\n");
	273	cout<<pararchivename<<endl;
	274	printf("*******************************\n");
	275
	276	if (gSystem->Exec("PROOF-INF/BUILD.sh")) {
	277	Error("runProcess","Cannot Build the PAR Archive! - Abort!");
	278	return -1;
	279	}
	280	}
	281	// check for SETUP.C and execute
	282	if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) {
	283	printf("*******************************\n");
	284	printf("* Setup PAR archive *\n");
	285	cout<<pararchivename<<endl;
	286	printf("*******************************\n");
	287	gROOT->Macro("PROOF-INF/SETUP.C");
	288	}
	289
	290	gSystem->ChangeDirectory(ocwd.Data());
	291	printf("Current dir: %s\n", ocwd.Data());
	292	}
	293
	294
	295
	296	void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){
	297	//Fills chain with data
	298	TString ocwd = gSystem->WorkingDirectory();
	299
	300	//-----------------------------------------------------------
	301	//Analysis of CAF data locally and with PROOF
	302	//-----------------------------------------------------------
	303	if(mode ==mPROOF \|\| mode ==mLocalCAF){
	304	// Chain from CAF
	305	gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C");
	306	// The second parameter is the number of input files in the chain
	307	chain = CreateESDChain("ESD12001.txt", 5);
	308	}
	309
	310	//---------------------------------------
	311	//Local files analysis
	312	//---------------------------------------
	313	else if(mode == mLocal){
	314	//If you want to add several ESD files sitting in a common directory INDIR
	315	//Specify as environmental variables the directory (INDIR), the number of files
	316	//to analyze (NEVENT) and the pattern name of the directories with files (PATTERN)
	317
	318	if(gSystem->Getenv("INDIR"))
	319	kInDir = gSystem->Getenv("INDIR") ;
	320	else cout<<"INDIR not set, use default: "<<kInDir<<endl;
	321
	322	if(gSystem->Getenv("PATTERN"))
323	kPattern = gSystem->Getenv("PATTERN") ;
324	else cout<<"PATTERN not set, use default: "<<kPattern<<endl;
325
326	if(gSystem->Getenv("NEVENT"))
327	kEvent = atoi(gSystem->Getenv("NEVENT")) ;
328	else cout<<"NEVENT not set, use default: "<<kEvent<<endl;
329
330	//Check if env variables are set and are correct
331	if ( kInDir && kEvent) {
332	printf("Get %d files from directory %s\n",kEvent,kInDir);
333	if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist
334	printf("%s does not exist\n", kInDir) ;
335	return ;
336	}
337	cout<<"INDIR : "<<kInDir<<endl;
338	cout<<"NEVENT : "<<kEvent<<endl;
339	cout<<"PATTERN: " <<kPattern<<endl;
1e1befe8	340
	341	TString datafile="";
	342	if(kInputData == "ESD") datafile = "AliESDs.root" ;
	343	else if(kInputData == "AOD") datafile = "aod.root" ;
	344	else if(kInputData == "MC") datafile = "galice.root" ;
	345
d92b41ad	346	//Loop on ESD files, add them to chain
	347	Int_t event =0;
	348	Int_t skipped=0 ;
	349	char file[120] ;
	350	char filexs[120] ;
	351
	352	for (event = 0 ; event < kEvent ; event++) {
1e1befe8	353	sprintf(file, "%s/%s%d/%s", kInDir,kPattern,event,datafile.Data()) ;
d92b41ad	354	sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ;
	355	TFile * fESD = 0 ;
	356	//Check if file exists and add it, if not skip it
	357	if ( fESD = TFile::Open(file)) {
1e1befe8	358	if ( fESD->Get(kTreeName) ) {
d92b41ad	359	printf("++++ Adding %s\n", file) ;
	360	chain->AddFile(file);
	361	chainxs->Add(filexs) ;
	362	}
	363	}
	364	else {
	365	printf("---- Skipping %s\n", file) ;
	366	skipped++ ;
	367	}
	368	}
1e1befe8	369	printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped) ;
d92b41ad	370	}
	371	else {
	372	TString input = "AliESDs.root" ;
	373	cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl;
	374	chain->AddFile(input);
	375	}
	376
	377	}// local files analysis
	378
	379	//------------------------------
	380	//GRID xml files
	381	//-----------------------------
	382	else if(mode == mGRID){
	383	//Get colection file. It is specified by the environmental
	384	//variable XML
	385
	386	if(gSystem->Getenv("XML") )
	387	kXML = gSystem->Getenv("XML");
	388	else
	389	sprintf(kXML, "collection.xml") ;
	390
	391	if (!TFile::Open(kXML)) {
	392	printf("No collection file with name -- %s -- was found\n",kXML);
	393	return ;
	394	}
	395	else cout<<"XML file "<<kXML<<endl;
	396
	397	//Load necessary libraries and connect to the GRID
	398	gSystem->Load("libNetx.so") ;
	399	gSystem->Load("libRAliEn.so");
	400	TGrid::Connect("alien://") ;
	401
	402	//Feed Grid with collection file
	403	//TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML));
	404	TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML);
	405	if (! collection) {
	406	AliError(Form("%s not found", kXML)) ;
	407	return kFALSE ;
	408	}
	409	TGridResult* result = collection->GetGridResult("",0 ,0);
	410
	411	// Makes the ESD chain
	412	printf("* Getting the Chain *\n");
	413	for (Int_t index = 0; index < result->GetEntries(); index++) {
	414	TString alienURL = result->GetKey(index, "turl") ;
	415	cout << "================== " << alienURL << endl ;
	416	chain->Add(alienURL) ;
	417	alienURL.ReplaceAll("AliESDs.root",kXSFileName);
	418	chainxs->Add(alienURL) ;
	419	}
	420	}// xml analysis
	421
	422	gSystem->ChangeDirectory(ocwd.Data());
	423	}
	424
	425	//________________________________________________
	426	void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr)
	427	{
	428	// Read the PYTHIA statistics from the file pyxsec.root created by
	429	// the function WriteXsection():
	430	// integrated cross section (xsection) and
	431	// the number of Pyevent() calls (ntrials)
	432	// and calculate the weight per one event xsection/ntrials
	433	// The spectrum calculated by a user should be
434	// multiplied by this weight, something like this:
435	// TH1F *userSpectrum ... // book and fill the spectrum
436	// userSpectrum->Scale(weight)
437	//
438	// Yuri Kharlov 19 June 2007
439	// Gustavo Conesa 15 April 2008
440	Double_t xsection = 0;
441	UInt_t ntrials = 0;
442	xs = 0;
443	ntr = 0;
444
445	Int_t nfiles = tree->GetEntries() ;
446	if (tree && nfiles > 0) {
447	tree->SetBranchAddress("xsection",&xsection);
448	tree->SetBranchAddress("ntrials",&ntrials);
449	for(Int_t i = 0; i < nfiles; i++){
450	tree->GetEntry(i);
451	xs += xsection ;
452	ntr += ntrials ;
453	cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl;
454	}
455
456	xs = xs / nfiles;
457	ntr = ntr / nfiles;
458	cout << "-----------------------------------------------------------------"<<endl;
459	cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl;
460	cout << "-----------------------------------------------------------------"<<endl;
461	}
462	else cout << " >>>> Empty tree !!!! <<<<< "<<endl;
463
464	}
465
466
467