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);
83 AliAODHandler* aodoutHandler = new AliAODHandler();
84 aodoutHandler->SetOutputFileName("aod.root");
85 //aodoutHandler->SetCreateNonStandardAOD();
86 mgr->SetOutputEventHandler(aodoutHandler);
89 if(kInputData == "ESD"){
91 AliESDInputHandler *esdHandler = new AliESDInputHandler();
92 mgr->SetInputEventHandler(esdHandler);
94 if(kInputData == "AOD"){
96 AliAODInputHandler *aodHandler = new AliAODInputHandler();
97 mgr->SetInputEventHandler(aodHandler);
100 //mgr->SetDebugLevel(-1); // For debugging, do not uncomment if you want no messages.
102 //-------------------------------------------------------------------------
103 //Define task, put here any other task that you want to use.
104 //-------------------------------------------------------------------------
105 AliAnalysisTaskParticleCorrelation * taskpwg4 = new AliAnalysisTaskParticleCorrelation ("Particle");
106 taskpwg4->SetConfigFileName(configName); //Default name is ConfigAnalysis
108 mgr->AddTask(taskpwg4);
110 // Create containers for input/output
111 AliAnalysisDataContainer *cinput1 = mgr->GetCommonInputContainer();
112 AliAnalysisDataContainer *coutput1 = mgr->GetCommonOutputContainer();
113 AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("histos", TList::Class(),
114 AliAnalysisManager::kOutputContainer, "histos.root");
116 mgr->ConnectInput (taskpwg4, 0, cinput1);
117 mgr->ConnectOutput (taskpwg4, 0, coutput1 );
118 mgr->ConnectOutput (taskpwg4, 1, coutput2 );
120 //------------------------
122 //-----------------------
123 Int_t nfiles = chainxs->GetEntries();
124 //cout<<"Get? "<<kGetXSectionFromFileAndScale<<" nfiles "<<nfiles<<endl;
125 if(kGetXSectionFromFileAndScale && nfiles > 0){
126 //cout<<"Init AnaScale"<<endl;
127 //Get the cross section
130 GetAverageXsection(chainxs, xsection, ntrials);
132 AliAnaScale * scale = new AliAnaScale("scale") ;
133 scale->Set(xsection/ntrials/kNumberOfEventsPerFile/nfiles) ;
134 scale->MakeSumw2(kFALSE);//If you want histograms with error bars set to kTRUE
135 //scale->SetDebugLevel(2);
138 AliAnalysisDataContainer *coutput3 = mgr->CreateContainer("histosscaled", TList::Class(),
139 AliAnalysisManager::kOutputContainer, "histosscaled.root");
140 mgr->ConnectInput (scale, 0, coutput2);
141 mgr->ConnectOutput (scale, 0, coutput3 );
144 //-----------------------
146 //-----------------------
148 if (mode==mLocal || mode == mLocalCAF)
150 else if (mode==mPROOF)
152 else if (mode==mGRID)
157 mgr->StartAnalysis(smode.Data(),chain);
159 cout <<" Analysis ended sucessfully "<< endl ;
162 else cout << "Chain was not produced ! "<<endl;
166 void LoadLibraries(const anaModes mode) {
168 //--------------------------------------
169 // Load the needed libraries most of them already loaded by aliroot
170 //--------------------------------------
171 gSystem->Load("libTree.so");
172 gSystem->Load("libGeom.so");
173 gSystem->Load("libVMC.so");
174 gSystem->Load("libXMLIO.so");
176 //----------------------------------------------------------
177 // >>>>>>>>>>> Local mode <<<<<<<<<<<<<<
178 //----------------------------------------------------------
179 if (mode==mLocal || mode == mLocalCAF || mode == mGRID) {
180 //--------------------------------------------------------
181 // If you want to use already compiled libraries
182 // in the aliroot distribution
183 //--------------------------------------------------------
184 //gSystem->Load("libSTEERBase");
185 //gSystem->Load("libESD");
186 //gSystem->Load("libAOD");
187 //gSystem->Load("libANALYSIS");
188 //gSystem->Load("libANALYSISalice");
189 //gSystem->Load("libPHOSUtils");
190 //gSystem->Load("libPWG4PartCorrBase");
191 //gSystem->Load("libPWG4PartCorrDep");
193 //--------------------------------------------------------
194 //If you want to use root and par files from aliroot
195 //--------------------------------------------------------
196 SetupPar("STEERBase");
199 SetupPar("ANALYSIS");
200 SetupPar("ANALYSISalice");
201 //If your analysis needs PHOS geometry uncomment following lines
202 // SetupPar("PHOSUtils");
204 // TGeoManager::Import("geometry.root") ; //need file "geometry.root" in local dir!!!!
205 SetupPar("PWG4PartCorrBase");
206 SetupPar("PWG4PartCorrDep");
209 //---------------------------------------------------------
210 // <<<<<<<<<< PROOF mode >>>>>>>>>>>>
211 //---------------------------------------------------------
212 else if (mode==mPROOF) {
215 // Put appropriate username here
216 // TProof::Reset("proof://mgheata@lxb6046.cern.ch");
217 TProof::Open("proof://mgheata@lxb6046.cern.ch");
219 // gProof->ClearPackages();
220 // gProof->ClearPackage("ESD");
221 // gProof->ClearPackage("AOD");
222 // gProof->ClearPackage("ANALYSIS");
223 // gProof->ClearPackage("PWG4PartCorrBase");
224 // gProof->ClearPackage("PWG4PartCorrDep");
226 // Enable the STEERBase Package
227 gProof->UploadPackage("STEERBase.par");
228 gProof->EnablePackage("STEERBase");
229 // Enable the ESD Package
230 gProof->UploadPackage("ESD.par");
231 gProof->EnablePackage("ESD");
232 // Enable the AOD Package
233 gProof->UploadPackage("AOD.par");
234 gProof->EnablePackage("AOD");
235 // Enable the Analysis Package
236 gProof->UploadPackage("ANALYSIS.par");
237 gProof->EnablePackage("ANALYSIS");
238 // Enable the PHOS geometry Package
239 //gProof->UploadPackage("PHOSUtils.par");
240 //gProof->EnablePackage("PHOSUtils");
241 // Enable PartCorr analysis
242 gProof->UploadPackage("PWG4PartCorrBase.par");
243 gProof->EnablePackage("PWG4PartCorrBase");
244 gProof->UploadPackage("PWG4PartCorrDep.par");
245 gProof->EnablePackage("PWG4PartCorrDep");
246 gProof->ShowEnabledPackages();
251 void SetupPar(char* pararchivename)
253 //Load par files, create analysis libraries
254 //For testing, if par file already decompressed and modified
255 //classes then do not decompress.
257 TString cdir(Form("%s", gSystem->WorkingDirectory() )) ;
258 TString parpar(Form("%s.par", pararchivename)) ;
259 if ( gSystem->AccessPathName(parpar.Data()) ) {
260 gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ;
261 TString processline(Form(".! make %s", parpar.Data())) ;
262 gROOT->ProcessLine(processline.Data()) ;
263 gSystem->ChangeDirectory(cdir) ;
264 processline = Form(".! mv $ALICE_ROOT/%s .", parpar.Data()) ;
265 gROOT->ProcessLine(processline.Data()) ;
267 if ( gSystem->AccessPathName(pararchivename) ) {
268 TString processline = Form(".! tar xvzf %s",parpar.Data()) ;
269 gROOT->ProcessLine(processline.Data());
272 TString ocwd = gSystem->WorkingDirectory();
273 gSystem->ChangeDirectory(pararchivename);
275 // check for BUILD.sh and execute
276 if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) {
277 printf("*******************************\n");
278 printf("*** Building PAR archive ***\n");
279 cout<<pararchivename<<endl;
280 printf("*******************************\n");
282 if (gSystem->Exec("PROOF-INF/BUILD.sh")) {
283 Error("runProcess","Cannot Build the PAR Archive! - Abort!");
287 // check for SETUP.C and execute
288 if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) {
289 printf("*******************************\n");
290 printf("*** Setup PAR archive ***\n");
291 cout<<pararchivename<<endl;
292 printf("*******************************\n");
293 gROOT->Macro("PROOF-INF/SETUP.C");
296 gSystem->ChangeDirectory(ocwd.Data());
297 printf("Current dir: %s\n", ocwd.Data());
302 void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){
303 //Fills chain with data
304 TString ocwd = gSystem->WorkingDirectory();
306 //-----------------------------------------------------------
307 //Analysis of CAF data locally and with PROOF
308 //-----------------------------------------------------------
309 if(mode ==mPROOF || mode ==mLocalCAF){
311 gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C");
312 // The second parameter is the number of input files in the chain
313 chain = CreateESDChain("ESD12001.txt", 5);
316 //---------------------------------------
317 //Local files analysis
318 //---------------------------------------
319 else if(mode == mLocal){
320 //If you want to add several ESD files sitting in a common directory INDIR
321 //Specify as environmental variables the directory (INDIR), the number of files
322 //to analyze (NEVENT) and the pattern name of the directories with files (PATTERN)
324 if(gSystem->Getenv("INDIR"))
325 kInDir = gSystem->Getenv("INDIR") ;
326 else cout<<"INDIR not set, use default: "<<kInDir<<endl;
328 if(gSystem->Getenv("PATTERN"))
329 kPattern = gSystem->Getenv("PATTERN") ;
330 else cout<<"PATTERN not set, use default: "<<kPattern<<endl;
332 if(gSystem->Getenv("NEVENT"))
333 kEvent = atoi(gSystem->Getenv("NEVENT")) ;
334 else cout<<"NEVENT not set, use default: "<<kEvent<<endl;
336 //Check if env variables are set and are correct
337 if ( kInDir && kEvent) {
338 printf("Get %d files from directory %s\n",kEvent,kInDir);
339 if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist
340 printf("%s does not exist\n", kInDir) ;
343 cout<<"INDIR : "<<kInDir<<endl;
344 cout<<"NEVENT : "<<kEvent<<endl;
345 cout<<"PATTERN: " <<kPattern<<endl;
348 if(kInputData == "ESD") datafile = "AliESDs.root" ;
349 else if(kInputData == "AOD") datafile = "aod.root" ;
350 else if(kInputData == "MC") datafile = "galice.root" ;
352 //Loop on ESD files, add them to chain
358 for (event = 0 ; event < kEvent ; event++) {
359 sprintf(file, "%s/%s%d/%s", kInDir,kPattern,event,datafile.Data()) ;
360 sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ;
362 //Check if file exists and add it, if not skip it
363 if ( fESD = TFile::Open(file)) {
364 if ( fESD->Get(kTreeName) ) {
365 printf("++++ Adding %s\n", file) ;
366 chain->AddFile(file);
367 chainxs->Add(filexs) ;
371 printf("---- Skipping %s\n", file) ;
375 printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped*100) ;
378 TString input = "AliESDs.root" ;
379 cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl;
380 chain->AddFile(input);
383 }// local files analysis
385 //------------------------------
387 //-----------------------------
388 else if(mode == mGRID){
389 //Get colection file. It is specified by the environmental
392 if(gSystem->Getenv("XML") )
393 kXML = gSystem->Getenv("XML");
395 sprintf(kXML, "collection.xml") ;
397 if (!TFile::Open(kXML)) {
398 printf("No collection file with name -- %s -- was found\n",kXML);
401 else cout<<"XML file "<<kXML<<endl;
403 //Load necessary libraries and connect to the GRID
404 gSystem->Load("libNetx.so") ;
405 gSystem->Load("libRAliEn.so");
406 TGrid::Connect("alien://") ;
408 //Feed Grid with collection file
409 //TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML));
410 TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML);
412 AliError(Form("%s not found", kXML)) ;
415 TGridResult* result = collection->GetGridResult("",0 ,0);
417 // Makes the ESD chain
418 printf("*** Getting the Chain ***\n");
419 for (Int_t index = 0; index < result->GetEntries(); index++) {
420 TString alienURL = result->GetKey(index, "turl") ;
421 cout << "================== " << alienURL << endl ;
422 chain->Add(alienURL) ;
423 alienURL.ReplaceAll("AliESDs.root",kXSFileName);
424 chainxs->Add(alienURL) ;
428 gSystem->ChangeDirectory(ocwd.Data());
431 //________________________________________________
432 void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr)
434 // Read the PYTHIA statistics from the file pyxsec.root created by
435 // the function WriteXsection():
436 // integrated cross section (xsection) and
437 // the number of Pyevent() calls (ntrials)
438 // and calculate the weight per one event xsection/ntrials
439 // The spectrum calculated by a user should be
440 // multiplied by this weight, something like this:
441 // TH1F *userSpectrum ... // book and fill the spectrum
442 // userSpectrum->Scale(weight)
444 // Yuri Kharlov 19 June 2007
445 // Gustavo Conesa 15 April 2008
446 Double_t xsection = 0;
451 Int_t nfiles = tree->GetEntries() ;
452 if (tree && nfiles > 0) {
453 tree->SetBranchAddress("xsection",&xsection);
454 tree->SetBranchAddress("ntrials",&ntrials);
455 for(Int_t i = 0; i < nfiles; i++){
459 cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl;
464 cout << "-----------------------------------------------------------------"<<endl;
465 cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl;
466 cout << "-----------------------------------------------------------------"<<endl;
468 else cout << " >>>> Empty tree !!!! <<<<< "<<endl;