2 //--------------------------------------------------
3 // Example macro to do analysis with the
4 // analysis classes in PWG4PartCorr
5 // Can be executed with Root and AliRoot
7 // Pay attention to the options and definitions
8 // set in the lines below
10 // Author : Gustavo Conesa Balbastre (INFN-LNF)
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
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 = "/user/data/files/";
23 char * kPattern = ""; // Data are in files kInDir/kPattern+i
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 //---------------------------------------------------------------------------
38 const Bool_t kMC = kTRUE; //With real data kMC = kFALSE
39 const TString kInputData = "ESD";//ESD, AOD, MC
40 TString kTreeName = "esdTree";
42 void ana(Int_t mode=mLocal, TString configName = "ConfigAnalysisPhoton")
46 //--------------------------------------------------------------------
47 // Load analysis libraries
48 // Look at the method below,
49 // change whatever you need for your analysis case
50 // ------------------------------------------------------------------
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" ;
60 cout<<"Wrong data type "<<kInputData<<endl;
64 TChain *chain = new TChain(kTreeName) ;
65 TChain * chainxs = new TChain("Xsection") ;
66 CreateChain(mode, chain, chainxs);
69 AliLog::SetGlobalLogLevel(AliLog::kError);//Minimum prints on screen
71 //--------------------------------------
72 // Make the analysis manager
73 //-------------------------------------
74 AliAnalysisManager *mgr = new AliAnalysisManager("Manager", "Manager");
76 if(kMC || kInputData == "MC"){
77 AliMCEventHandler* mcHandler = new AliMCEventHandler();
78 mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file
79 mgr->SetMCtruthEventHandler(mcHandler);
80 if( kInputData == "MC") mgr->SetInputEventHandler(NULL);
84 AliAODHandler* aodoutHandler = new AliAODHandler();
85 aodoutHandler->SetOutputFileName("aod.root");
86 //aodoutHandler->SetCreateNonStandardAOD();
87 mgr->SetOutputEventHandler(aodoutHandler);
90 if(kInputData == "ESD"){
92 AliESDInputHandler *esdHandler = new AliESDInputHandler();
93 mgr->SetInputEventHandler(esdHandler);
95 if(kInputData == "AOD"){
97 AliAODInputHandler *aodHandler = new AliAODInputHandler();
98 mgr->SetInputEventHandler(aodHandler);
101 //mgr->SetDebugLevel(-1); // For debugging, do not uncomment if you want no messages.
103 //-------------------------------------------------------------------------
104 //Define task, put here any other task that you want to use.
105 //-------------------------------------------------------------------------
106 AliAnalysisTaskParticleCorrelation * taskpwg4 = new AliAnalysisTaskParticleCorrelation ("Particle");
107 taskpwg4->SetConfigFileName(configName); //Default name is ConfigAnalysis
109 mgr->AddTask(taskpwg4);
111 // Create containers for input/output
112 AliAnalysisDataContainer *cinput1 = mgr->GetCommonInputContainer();
113 AliAnalysisDataContainer *coutput1 = mgr->GetCommonOutputContainer();
114 AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("histos", TList::Class(),
115 AliAnalysisManager::kOutputContainer, "histos.root");
117 mgr->ConnectInput (taskpwg4, 0, cinput1);
118 mgr->ConnectOutput (taskpwg4, 0, coutput1 );
119 mgr->ConnectOutput (taskpwg4, 1, coutput2 );
121 //------------------------
123 //-----------------------
124 Int_t nfiles = chainxs->GetEntries();
125 //cout<<"Get? "<<kGetXSectionFromFileAndScale<<" nfiles "<<nfiles<<endl;
126 if(kGetXSectionFromFileAndScale && nfiles > 0){
127 //cout<<"Init AnaScale"<<endl;
128 //Get the cross section
131 GetAverageXsection(chainxs, xsection, ntrials);
133 AliAnaScale * scale = new AliAnaScale("scale") ;
134 scale->Set(xsection/ntrials/kNumberOfEventsPerFile/nfiles) ;
135 scale->MakeSumw2(kFALSE);//If you want histograms with error bars set to kTRUE
136 //scale->SetDebugLevel(2);
139 AliAnalysisDataContainer *coutput3 = mgr->CreateContainer("histosscaled", TList::Class(),
140 AliAnalysisManager::kOutputContainer, "histosscaled.root");
141 mgr->ConnectInput (scale, 0, coutput2);
142 mgr->ConnectOutput (scale, 0, coutput3 );
145 //-----------------------
147 //-----------------------
149 if (mode==mLocal || mode == mLocalCAF)
151 else if (mode==mPROOF)
153 else if (mode==mGRID)
158 mgr->StartAnalysis(smode.Data(),chain);
160 cout <<" Analysis ended sucessfully "<< endl ;
163 else cout << "Chain was not produced ! "<<endl;
167 void LoadLibraries(const anaModes mode) {
169 //--------------------------------------
170 // Load the needed libraries most of them already loaded by aliroot
171 //--------------------------------------
172 gSystem->Load("libTree.so");
173 gSystem->Load("libGeom.so");
174 gSystem->Load("libVMC.so");
175 gSystem->Load("libXMLIO.so");
177 //----------------------------------------------------------
178 // >>>>>>>>>>> Local mode <<<<<<<<<<<<<<
179 //----------------------------------------------------------
180 if (mode==mLocal || mode == mLocalCAF || mode == mGRID) {
181 //--------------------------------------------------------
182 // If you want to use already compiled libraries
183 // in the aliroot distribution
184 //--------------------------------------------------------
185 //gSystem->Load("libSTEERBase");
186 //gSystem->Load("libESD");
187 //gSystem->Load("libAOD");
188 //gSystem->Load("libANALYSIS");
189 //gSystem->Load("libANALYSISalice");
190 //gSystem->Load("libPHOSUtils");
191 //gSystem->Load("libPWG4PartCorrBase");
192 //gSystem->Load("libPWG4PartCorrDep");
194 //--------------------------------------------------------
195 //If you want to use root and par files from aliroot
196 //--------------------------------------------------------
197 SetupPar("STEERBase");
200 SetupPar("ANALYSIS");
201 SetupPar("ANALYSISalice");
202 //If your analysis needs PHOS geometry uncomment following lines
203 // SetupPar("PHOSUtils");
205 // TGeoManager::Import("geometry.root") ; //need file "geometry.root" in local dir!!!!
206 SetupPar("PWG4PartCorrBase");
207 SetupPar("PWG4PartCorrDep");
210 //---------------------------------------------------------
211 // <<<<<<<<<< PROOF mode >>>>>>>>>>>>
212 //---------------------------------------------------------
213 else if (mode==mPROOF) {
216 // Put appropriate username here
217 // TProof::Reset("proof://mgheata@lxb6046.cern.ch");
218 TProof::Open("proof://mgheata@lxb6046.cern.ch");
220 // gProof->ClearPackages();
221 // gProof->ClearPackage("ESD");
222 // gProof->ClearPackage("AOD");
223 // gProof->ClearPackage("ANALYSIS");
224 // gProof->ClearPackage("PWG4PartCorrBase");
225 // gProof->ClearPackage("PWG4PartCorrDep");
227 // Enable the STEERBase Package
228 gProof->UploadPackage("STEERBase.par");
229 gProof->EnablePackage("STEERBase");
230 // Enable the ESD Package
231 gProof->UploadPackage("ESD.par");
232 gProof->EnablePackage("ESD");
233 // Enable the AOD Package
234 gProof->UploadPackage("AOD.par");
235 gProof->EnablePackage("AOD");
236 // Enable the Analysis Package
237 gProof->UploadPackage("ANALYSIS.par");
238 gProof->EnablePackage("ANALYSIS");
239 // Enable the PHOS geometry Package
240 //gProof->UploadPackage("PHOSUtils.par");
241 //gProof->EnablePackage("PHOSUtils");
242 // Enable PartCorr analysis
243 gProof->UploadPackage("PWG4PartCorrBase.par");
244 gProof->EnablePackage("PWG4PartCorrBase");
245 gProof->UploadPackage("PWG4PartCorrDep.par");
246 gProof->EnablePackage("PWG4PartCorrDep");
247 gProof->ShowEnabledPackages();
252 void SetupPar(char* pararchivename)
254 //Load par files, create analysis libraries
255 //For testing, if par file already decompressed and modified
256 //classes then do not decompress.
258 TString cdir(Form("%s", gSystem->WorkingDirectory() )) ;
259 TString parpar(Form("%s.par", pararchivename)) ;
260 if ( gSystem->AccessPathName(parpar.Data()) ) {
261 gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ;
262 TString processline(Form(".! make %s", parpar.Data())) ;
263 gROOT->ProcessLine(processline.Data()) ;
264 gSystem->ChangeDirectory(cdir) ;
265 processline = Form(".! mv $ALICE_ROOT/%s .", parpar.Data()) ;
266 gROOT->ProcessLine(processline.Data()) ;
268 if ( gSystem->AccessPathName(pararchivename) ) {
269 TString processline = Form(".! tar xvzf %s",parpar.Data()) ;
270 gROOT->ProcessLine(processline.Data());
273 TString ocwd = gSystem->WorkingDirectory();
274 gSystem->ChangeDirectory(pararchivename);
276 // check for BUILD.sh and execute
277 if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) {
278 printf("*******************************\n");
279 printf("*** Building PAR archive ***\n");
280 cout<<pararchivename<<endl;
281 printf("*******************************\n");
283 if (gSystem->Exec("PROOF-INF/BUILD.sh")) {
284 Error("runProcess","Cannot Build the PAR Archive! - Abort!");
288 // check for SETUP.C and execute
289 if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) {
290 printf("*******************************\n");
291 printf("*** Setup PAR archive ***\n");
292 cout<<pararchivename<<endl;
293 printf("*******************************\n");
294 gROOT->Macro("PROOF-INF/SETUP.C");
297 gSystem->ChangeDirectory(ocwd.Data());
298 printf("Current dir: %s\n", ocwd.Data());
303 void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){
304 //Fills chain with data
305 TString ocwd = gSystem->WorkingDirectory();
307 //-----------------------------------------------------------
308 //Analysis of CAF data locally and with PROOF
309 //-----------------------------------------------------------
310 if(mode ==mPROOF || mode ==mLocalCAF){
312 gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C");
313 // The second parameter is the number of input files in the chain
314 chain = CreateESDChain("ESD12001.txt", 5);
317 //---------------------------------------
318 //Local files analysis
319 //---------------------------------------
320 else if(mode == mLocal){
321 //If you want to add several ESD files sitting in a common directory INDIR
322 //Specify as environmental variables the directory (INDIR), the number of files
323 //to analyze (NEVENT) and the pattern name of the directories with files (PATTERN)
325 if(gSystem->Getenv("INDIR"))
326 kInDir = gSystem->Getenv("INDIR") ;
327 else cout<<"INDIR not set, use default: "<<kInDir<<endl;
329 if(gSystem->Getenv("PATTERN"))
330 kPattern = gSystem->Getenv("PATTERN") ;
331 else cout<<"PATTERN not set, use default: "<<kPattern<<endl;
333 if(gSystem->Getenv("NEVENT"))
334 kEvent = atoi(gSystem->Getenv("NEVENT")) ;
335 else cout<<"NEVENT not set, use default: "<<kEvent<<endl;
337 //Check if env variables are set and are correct
338 if ( kInDir && kEvent) {
339 printf("Get %d files from directory %s\n",kEvent,kInDir);
340 if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist
341 printf("%s does not exist\n", kInDir) ;
344 cout<<"INDIR : "<<kInDir<<endl;
345 cout<<"NEVENT : "<<kEvent<<endl;
346 cout<<"PATTERN: " <<kPattern<<endl;
349 if(kInputData == "ESD") datafile = "AliESDs.root" ;
350 else if(kInputData == "AOD") datafile = "aod.root" ;
351 else if(kInputData == "MC") datafile = "galice.root" ;
353 //Loop on ESD files, add them to chain
359 for (event = 0 ; event < kEvent ; event++) {
360 sprintf(file, "%s/%s%d/%s", kInDir,kPattern,event,datafile.Data()) ;
361 sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ;
363 //Check if file exists and add it, if not skip it
364 if ( fESD = TFile::Open(file)) {
365 if ( fESD->Get(kTreeName) ) {
366 printf("++++ Adding %s\n", file) ;
367 chain->AddFile(file);
368 chainxs->Add(filexs) ;
372 printf("---- Skipping %s\n", file) ;
376 printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped) ;
379 TString input = "AliESDs.root" ;
380 cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl;
381 chain->AddFile(input);
384 }// local files analysis
386 //------------------------------
388 //-----------------------------
389 else if(mode == mGRID){
390 //Get colection file. It is specified by the environmental
393 if(gSystem->Getenv("XML") )
394 kXML = gSystem->Getenv("XML");
396 sprintf(kXML, "collection.xml") ;
398 if (!TFile::Open(kXML)) {
399 printf("No collection file with name -- %s -- was found\n",kXML);
402 else cout<<"XML file "<<kXML<<endl;
404 //Load necessary libraries and connect to the GRID
405 gSystem->Load("libNetx.so") ;
406 gSystem->Load("libRAliEn.so");
407 TGrid::Connect("alien://") ;
409 //Feed Grid with collection file
410 //TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML));
411 TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML);
413 AliError(Form("%s not found", kXML)) ;
416 TGridResult* result = collection->GetGridResult("",0 ,0);
418 // Makes the ESD chain
419 printf("*** Getting the Chain ***\n");
420 for (Int_t index = 0; index < result->GetEntries(); index++) {
421 TString alienURL = result->GetKey(index, "turl") ;
422 cout << "================== " << alienURL << endl ;
423 chain->Add(alienURL) ;
424 alienURL.ReplaceAll("AliESDs.root",kXSFileName);
425 chainxs->Add(alienURL) ;
429 gSystem->ChangeDirectory(ocwd.Data());
432 //________________________________________________
433 void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr)
435 // Read the PYTHIA statistics from the file pyxsec.root created by
436 // the function WriteXsection():
437 // integrated cross section (xsection) and
438 // the number of Pyevent() calls (ntrials)
439 // and calculate the weight per one event xsection/ntrials
440 // The spectrum calculated by a user should be
441 // multiplied by this weight, something like this:
442 // TH1F *userSpectrum ... // book and fill the spectrum
443 // userSpectrum->Scale(weight)
445 // Yuri Kharlov 19 June 2007
446 // Gustavo Conesa 15 April 2008
447 Double_t xsection = 0;
452 Int_t nfiles = tree->GetEntries() ;
453 if (tree && nfiles > 0) {
454 tree->SetBranchAddress("xsection",&xsection);
455 tree->SetBranchAddress("ntrials",&ntrials);
456 for(Int_t i = 0; i < nfiles; i++){
460 cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl;
465 cout << "-----------------------------------------------------------------"<<endl;
466 cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl;
467 cout << "-----------------------------------------------------------------"<<endl;
469 else cout << " >>>> Empty tree !!!! <<<<< "<<endl;