Added new background scheeme, did some cleanup. added new bethe block parameters...
[u/mrichter/AliRoot.git] / PWG4 / macros / ana.C
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d92b41ad 1/* $Id: $ */
d92b41ad 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//-------------------------------------------------
13enum 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
3e0577a2 22char * kInDir = "/user/data/files/";
23char * kPattern = ""; // Data are in files kInDir/kPattern+i
d92b41ad 24Int_t kEvent = 1; // Number of files
25//---------------------------------------------------------------------------
26//Collection file for grid analysis
27char * 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.
33const Bool_t kGetXSectionFromFileAndScale = kFALSE ;
34const char * kXSFileName = "pyxsec.root";
35const Int_t kNumberOfEventsPerFile = 100;
36//---------------------------------------------------------------------------
37
38const Bool_t kMC = kTRUE; //With real data kMC = kFALSE
7175a03a 39const TString kInputData = "ESD";//ESD, AOD, MC
40TString kTreeName = "esdTree";
41
3e0577a2 42void ana(Int_t mode=mLocal, TString configName = "ConfigAnalysisPhoton")
d92b41ad 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 //-------------------------------------------------------------------------------------------------
7175a03a 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
7175a03a 76 if(kMC || kInputData == "MC"){
d92b41ad 77 AliMCEventHandler* mcHandler = new AliMCEventHandler();
78 mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file
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
3e0577a2 101 //mgr->SetDebugLevel(-1); // For debugging, do not uncomment if you want no messages.
d92b41ad 102
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
3e0577a2 108
d92b41ad 109 mgr->AddTask(taskpwg4);
110
111 // Create containers for input/output
8a546c82 112 AliAnalysisDataContainer *cinput1 = mgr->GetCommonInputContainer();
113 AliAnalysisDataContainer *coutput1 = mgr->GetCommonOutputContainer();
d92b41ad 114 AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("histos", TList::Class(),
115 AliAnalysisManager::kOutputContainer, "histos.root");
116
117 mgr->ConnectInput (taskpwg4, 0, cinput1);
118 mgr->ConnectOutput (taskpwg4, 0, coutput1 );
119 mgr->ConnectOutput (taskpwg4, 1, coutput2 );
120
121 //------------------------
122 //Scaling task
123 //-----------------------
124 Int_t nfiles = chainxs->GetEntries();
3e0577a2 125 //cout<<"Get? "<<kGetXSectionFromFileAndScale<<" nfiles "<<nfiles<<endl;
d92b41ad 126 if(kGetXSectionFromFileAndScale && nfiles > 0){
3e0577a2 127 //cout<<"Init AnaScale"<<endl;
d92b41ad 128 //Get the cross section
129 Double_t xsection=0;
130 Float_t ntrials = 0;
131 GetAverageXsection(chainxs, xsection, ntrials);
132
133 AliAnaScale * scale = new AliAnaScale("scale") ;
e5dbdaf0 134 scale->Set(xsection/ntrials/nfiles) ;
3e0577a2 135 scale->MakeSumw2(kFALSE);//If you want histograms with error bars set to kTRUE
136 //scale->SetDebugLevel(2);
d92b41ad 137 mgr->AddTask(scale);
138
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 );
143 }
144
145 //-----------------------
146 // Run the analysis
147 //-----------------------
148 TString smode = "";
149 if (mode==mLocal || mode == mLocalCAF)
150 smode = "local";
151 else if (mode==mPROOF)
152 smode = "proof";
153 else if (mode==mGRID)
29d1ef1d 154 smode = "local";
d92b41ad 155
156 mgr->InitAnalysis();
157 mgr->PrintStatus();
158 mgr->StartAnalysis(smode.Data(),chain);
3e0577a2 159
160cout <<" Analysis ended sucessfully "<< endl ;
161
d92b41ad 162 }
163 else cout << "Chain was not produced ! "<<endl;
164
165}
166
167void LoadLibraries(const anaModes mode) {
168
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");
176
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");
3e0577a2 190 //gSystem->Load("libPHOSUtils");
e5dbdaf0 191 //gSystem->Load("libEMCALUtils");
3e0577a2 192 //gSystem->Load("libPWG4PartCorrBase");
193 //gSystem->Load("libPWG4PartCorrDep");
194
d92b41ad 195 //--------------------------------------------------------
196 //If you want to use root and par files from aliroot
197 //--------------------------------------------------------
198 SetupPar("STEERBase");
199 SetupPar("ESD");
200 SetupPar("AOD");
201 SetupPar("ANALYSIS");
202 SetupPar("ANALYSISalice");
e5dbdaf0 203 SetupPar("PHOSUtils");
204 SetupPar("EMCALUtils");
205 // //Create Geometry
3e0577a2 206// TGeoManager::Import("geometry.root") ; //need file "geometry.root" in local dir!!!!
207 SetupPar("PWG4PartCorrBase");
208 SetupPar("PWG4PartCorrDep");
d92b41ad 209 }
210
211 //---------------------------------------------------------
212 // <<<<<<<<<< PROOF mode >>>>>>>>>>>>
213 //---------------------------------------------------------
214 else if (mode==mPROOF) {
215 //
216 // Connect to proof
217 // Put appropriate username here
218 // TProof::Reset("proof://mgheata@lxb6046.cern.ch");
219 TProof::Open("proof://mgheata@lxb6046.cern.ch");
220
221 // gProof->ClearPackages();
222 // gProof->ClearPackage("ESD");
223 // gProof->ClearPackage("AOD");
224 // gProof->ClearPackage("ANALYSIS");
3e0577a2 225 // gProof->ClearPackage("PWG4PartCorrBase");
226 // gProof->ClearPackage("PWG4PartCorrDep");
d92b41ad 227
228 // Enable the STEERBase Package
229 gProof->UploadPackage("STEERBase.par");
230 gProof->EnablePackage("STEERBase");
231 // Enable the ESD Package
232 gProof->UploadPackage("ESD.par");
233 gProof->EnablePackage("ESD");
234 // Enable the AOD Package
235 gProof->UploadPackage("AOD.par");
236 gProof->EnablePackage("AOD");
237 // Enable the Analysis Package
238 gProof->UploadPackage("ANALYSIS.par");
239 gProof->EnablePackage("ANALYSIS");
3e0577a2 240 // Enable the PHOS geometry Package
e5dbdaf0 241 gProof->UploadPackage("PHOSUtils.par");
242 gProof->EnablePackage("PHOSUtils");
243 // Enable the PHOS geometry Package
244 gProof->UploadPackage("EMCALUtils.par");
245 gProof->EnablePackage("EMCALUtils");
3e0577a2 246 // Enable PartCorr analysis
247 gProof->UploadPackage("PWG4PartCorrBase.par");
248 gProof->EnablePackage("PWG4PartCorrBase");
249 gProof->UploadPackage("PWG4PartCorrDep.par");
250 gProof->EnablePackage("PWG4PartCorrDep");
d92b41ad 251 gProof->ShowEnabledPackages();
252 }
253
254}
255
256void SetupPar(char* pararchivename)
257{
258 //Load par files, create analysis libraries
259 //For testing, if par file already decompressed and modified
260 //classes then do not decompress.
261
262 TString cdir(Form("%s", gSystem->WorkingDirectory() )) ;
263 TString parpar(Form("%s.par", pararchivename)) ;
264 if ( gSystem->AccessPathName(parpar.Data()) ) {
265 gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ;
266 TString processline(Form(".! make %s", parpar.Data())) ;
267 gROOT->ProcessLine(processline.Data()) ;
268 gSystem->ChangeDirectory(cdir) ;
3e0577a2 269 processline = Form(".! mv $ALICE_ROOT/%s .", parpar.Data()) ;
d92b41ad 270 gROOT->ProcessLine(processline.Data()) ;
271 }
272 if ( gSystem->AccessPathName(pararchivename) ) {
273 TString processline = Form(".! tar xvzf %s",parpar.Data()) ;
274 gROOT->ProcessLine(processline.Data());
275 }
276
277 TString ocwd = gSystem->WorkingDirectory();
278 gSystem->ChangeDirectory(pararchivename);
279
280 // check for BUILD.sh and execute
281 if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) {
282 printf("*******************************\n");
283 printf("*** Building PAR archive ***\n");
284 cout<<pararchivename<<endl;
285 printf("*******************************\n");
286
287 if (gSystem->Exec("PROOF-INF/BUILD.sh")) {
288 Error("runProcess","Cannot Build the PAR Archive! - Abort!");
289 return -1;
290 }
291 }
292 // check for SETUP.C and execute
293 if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) {
294 printf("*******************************\n");
295 printf("*** Setup PAR archive ***\n");
296 cout<<pararchivename<<endl;
297 printf("*******************************\n");
298 gROOT->Macro("PROOF-INF/SETUP.C");
299 }
300
301 gSystem->ChangeDirectory(ocwd.Data());
302 printf("Current dir: %s\n", ocwd.Data());
303}
304
305
306
307void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){
308 //Fills chain with data
309 TString ocwd = gSystem->WorkingDirectory();
310
311 //-----------------------------------------------------------
312 //Analysis of CAF data locally and with PROOF
313 //-----------------------------------------------------------
314 if(mode ==mPROOF || mode ==mLocalCAF){
315 // Chain from CAF
316 gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C");
317 // The second parameter is the number of input files in the chain
318 chain = CreateESDChain("ESD12001.txt", 5);
319 }
320
321 //---------------------------------------
322 //Local files analysis
323 //---------------------------------------
324 else if(mode == mLocal){
325 //If you want to add several ESD files sitting in a common directory INDIR
326 //Specify as environmental variables the directory (INDIR), the number of files
327 //to analyze (NEVENT) and the pattern name of the directories with files (PATTERN)
328
329 if(gSystem->Getenv("INDIR"))
330 kInDir = gSystem->Getenv("INDIR") ;
331 else cout<<"INDIR not set, use default: "<<kInDir<<endl;
332
333 if(gSystem->Getenv("PATTERN"))
334 kPattern = gSystem->Getenv("PATTERN") ;
335 else cout<<"PATTERN not set, use default: "<<kPattern<<endl;
336
337 if(gSystem->Getenv("NEVENT"))
338 kEvent = atoi(gSystem->Getenv("NEVENT")) ;
339 else cout<<"NEVENT not set, use default: "<<kEvent<<endl;
340
341 //Check if env variables are set and are correct
342 if ( kInDir && kEvent) {
343 printf("Get %d files from directory %s\n",kEvent,kInDir);
344 if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist
345 printf("%s does not exist\n", kInDir) ;
346 return ;
347 }
348 cout<<"INDIR : "<<kInDir<<endl;
349 cout<<"NEVENT : "<<kEvent<<endl;
350 cout<<"PATTERN: " <<kPattern<<endl;
351
7175a03a 352 TString datafile="";
353 if(kInputData == "ESD") datafile = "AliESDs.root" ;
354 else if(kInputData == "AOD") datafile = "aod.root" ;
355 else if(kInputData == "MC") datafile = "galice.root" ;
356
d92b41ad 357 //Loop on ESD files, add them to chain
358 Int_t event =0;
359 Int_t skipped=0 ;
360 char file[120] ;
361 char filexs[120] ;
362
363 for (event = 0 ; event < kEvent ; event++) {
7175a03a 364 sprintf(file, "%s/%s%d/%s", kInDir,kPattern,event,datafile.Data()) ;
d92b41ad 365 sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ;
366 TFile * fESD = 0 ;
367 //Check if file exists and add it, if not skip it
368 if ( fESD = TFile::Open(file)) {
7175a03a 369 if ( fESD->Get(kTreeName) ) {
d92b41ad 370 printf("++++ Adding %s\n", file) ;
371 chain->AddFile(file);
372 chainxs->Add(filexs) ;
373 }
374 }
375 else {
376 printf("---- Skipping %s\n", file) ;
377 skipped++ ;
378 }
379 }
1e1befe8 380 printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped) ;
d92b41ad 381 }
382 else {
383 TString input = "AliESDs.root" ;
384 cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl;
385 chain->AddFile(input);
386 }
387
388 }// local files analysis
389
390 //------------------------------
391 //GRID xml files
392 //-----------------------------
393 else if(mode == mGRID){
394 //Get colection file. It is specified by the environmental
395 //variable XML
396
397 if(gSystem->Getenv("XML") )
398 kXML = gSystem->Getenv("XML");
399 else
400 sprintf(kXML, "collection.xml") ;
401
402 if (!TFile::Open(kXML)) {
403 printf("No collection file with name -- %s -- was found\n",kXML);
404 return ;
405 }
406 else cout<<"XML file "<<kXML<<endl;
407
408 //Load necessary libraries and connect to the GRID
409 gSystem->Load("libNetx.so") ;
410 gSystem->Load("libRAliEn.so");
411 TGrid::Connect("alien://") ;
412
413 //Feed Grid with collection file
414 //TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML));
415 TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML);
416 if (! collection) {
417 AliError(Form("%s not found", kXML)) ;
418 return kFALSE ;
419 }
420 TGridResult* result = collection->GetGridResult("",0 ,0);
421
422 // Makes the ESD chain
423 printf("*** Getting the Chain ***\n");
424 for (Int_t index = 0; index < result->GetEntries(); index++) {
425 TString alienURL = result->GetKey(index, "turl") ;
426 cout << "================== " << alienURL << endl ;
427 chain->Add(alienURL) ;
428 alienURL.ReplaceAll("AliESDs.root",kXSFileName);
429 chainxs->Add(alienURL) ;
430 }
431 }// xml analysis
432
433 gSystem->ChangeDirectory(ocwd.Data());
434}
435
436//________________________________________________
437void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr)
438{
439 // Read the PYTHIA statistics from the file pyxsec.root created by
440 // the function WriteXsection():
441 // integrated cross section (xsection) and
442 // the number of Pyevent() calls (ntrials)
443 // and calculate the weight per one event xsection/ntrials
444 // The spectrum calculated by a user should be
445 // multiplied by this weight, something like this:
446 // TH1F *userSpectrum ... // book and fill the spectrum
447 // userSpectrum->Scale(weight)
448 //
449 // Yuri Kharlov 19 June 2007
450 // Gustavo Conesa 15 April 2008
451 Double_t xsection = 0;
452 UInt_t ntrials = 0;
453 xs = 0;
454 ntr = 0;
455
456 Int_t nfiles = tree->GetEntries() ;
457 if (tree && nfiles > 0) {
458 tree->SetBranchAddress("xsection",&xsection);
459 tree->SetBranchAddress("ntrials",&ntrials);
460 for(Int_t i = 0; i < nfiles; i++){
461 tree->GetEntry(i);
462 xs += xsection ;
463 ntr += ntrials ;
464 cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl;
465 }
466
467 xs = xs / nfiles;
468 ntr = ntr / nfiles;
469 cout << "-----------------------------------------------------------------"<<endl;
470 cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl;
471 cout << "-----------------------------------------------------------------"<<endl;
472 }
473 else cout << " >>>> Empty tree !!!! <<<<< "<<endl;
474
475}
476
477
478