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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 | //------------------------------------------------- | |
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 | |
c8fe2783 | 21 | //variables: INDIR, PATTERN, NFILES, respectivelly |
22 | char * kInDir = "/Users/schutz/group/benjamin/pi0"; | |
3e0577a2 | 23 | char * kPattern = ""; // Data are in files kInDir/kPattern+i |
c8fe2783 | 24 | Int_t kFile = 1; // Number of files |
d92b41ad | 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"; | |
d92b41ad | 35 | //--------------------------------------------------------------------------- |
36 | ||
c8fe2783 | 37 | const Bool_t kMC = kFALSE; //With real data kMC = kFALSE |
38 | const TString kInputData = "AOD"; //ESD, AOD, MC | |
39 | TString kTreeName = "aodTree"; | |
7175a03a | 40 | |
c8fe2783 | 41 | void ana(Int_t mode=mLocal) |
d92b41ad | 42 | { |
43 | // Main | |
44 | ||
45 | //-------------------------------------------------------------------- | |
46 | // Load analysis libraries | |
47 | // Look at the method below, | |
48 | // change whatever you need for your analysis case | |
49 | // ------------------------------------------------------------------ | |
50 | LoadLibraries(mode) ; | |
51 | ||
52 | //------------------------------------------------------------------------------------------------- | |
53 | //Create chain from ESD and from cross sections files, look below for options. | |
c8fe2783 | 54 | //------------------------------------------------------------------------------------------------- |
7175a03a | 55 | if(kInputData == "ESD") kTreeName = "esdTree" ; |
c8fe2783 | 56 | else if(kInputData == "AOD") kTreeName = "aodTree" ; |
7175a03a | 57 | else if (kInputData == "MC") kTreeName = "TE" ; |
58 | else { | |
59 | cout<<"Wrong data type "<<kInputData<<endl; | |
60 | break; | |
61 | } | |
62 | ||
c8fe2783 | 63 | TChain *chain = new TChain(kTreeName) ; |
d92b41ad | 64 | TChain * chainxs = new TChain("Xsection") ; |
65 | CreateChain(mode, chain, chainxs); | |
66 | ||
67 | if(chain){ | |
68 | AliLog::SetGlobalLogLevel(AliLog::kError);//Minimum prints on screen | |
69 | ||
70 | //-------------------------------------- | |
71 | // Make the analysis manager | |
72 | //------------------------------------- | |
73 | AliAnalysisManager *mgr = new AliAnalysisManager("Manager", "Manager"); | |
74 | // MC handler | |
c8fe2783 | 75 | if((kMC || kInputData == "MC") && kInputData!="AOD"){ |
d92b41ad | 76 | AliMCEventHandler* mcHandler = new AliMCEventHandler(); |
77 | mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file | |
78 | mgr->SetMCtruthEventHandler(mcHandler); | |
c8fe2783 | 79 | if( kInputData == "MC") mgr->SetInputEventHandler(NULL); |
d92b41ad | 80 | } |
81 | ||
82 | // AOD output handler | |
c8fe2783 | 83 | AliAODHandler* aodoutHandler = new AliAODHandler(); |
84 | aodoutHandler->SetOutputFileName("aod.root"); | |
85 | ////aodoutHandler->SetCreateNonStandardAOD(); | |
86 | mgr->SetOutputEventHandler(aodoutHandler); | |
87 | ||
d92b41ad | 88 | //input |
c8fe2783 | 89 | if(kInputData == "ESD") |
90 | { | |
d92b41ad | 91 | // ESD handler |
92 | AliESDInputHandler *esdHandler = new AliESDInputHandler(); | |
93 | mgr->SetInputEventHandler(esdHandler); | |
c8fe2783 | 94 | cout<<"ESD handler "<<mgr->GetInputEventHandler()<<endl; |
95 | } | |
96 | if(kInputData == "AOD"){ | |
d92b41ad | 97 | // AOD handler |
98 | AliAODInputHandler *aodHandler = new AliAODInputHandler(); | |
99 | mgr->SetInputEventHandler(aodHandler); | |
c8fe2783 | 100 | cout<<"AOD handler "<<mgr->GetInputEventHandler()<<endl; |
101 | ||
d92b41ad | 102 | } |
103 | ||
c8fe2783 | 104 | // mgr->SetDebugLevel(-1); // For debugging, do not uncomment if you want no messages. |
d92b41ad | 105 | |
106 | //------------------------------------------------------------------------- | |
107 | //Define task, put here any other task that you want to use. | |
108 | //------------------------------------------------------------------------- | |
8a546c82 | 109 | AliAnalysisDataContainer *cinput1 = mgr->GetCommonInputContainer(); |
110 | AliAnalysisDataContainer *coutput1 = mgr->GetCommonOutputContainer(); | |
c8fe2783 | 111 | |
112 | // gROOT->LoadMacro("$ALICE_ROOT/ANALYSIS/macros/AddTaskESDFilter.C"); | |
113 | // AliAnalysisTaskESDfilter *taskesdfilter = AddTaskESDFilter(kFALSE); | |
114 | // | |
115 | gROOT->LoadMacro("AddTaskPartCorr.C"); | |
116 | ||
117 | ||
118 | AliAnalysisTaskParticleCorrelation *taskEMCAL = AddTaskPartCorr(kInputData,"EMCAL", kTRUE, kFALSE); | |
119 | mgr->AddTask(taskEMCAL); | |
120 | AliAnalysisTaskParticleCorrelation *taskPHOS = AddTaskPartCorr(kInputData,"PHOS", kTRUE, kFALSE); | |
121 | mgr->AddTask(taskPHOS); | |
122 | ||
123 | //gROOT->LoadMacro("$ALICE_ROOT/PWG4/macros/AddTaskCalorimeterQA.C"); | |
124 | //gROOT->LoadMacro("AddTaskCalorimeterQA.C"); | |
125 | //AliAnalysisTaskParticleCorrelation *taskQA = AddTaskCalorimeterQA(kInputData,kFALSE,kTRUE); | |
126 | ||
127 | //gROOT->LoadMacro("$ALICE_ROOT/PWG4/macros/AddTaskomega3pi.C"); | |
128 | //AliAnalysisTaskOmegaPi0PiPi * taskomega = AddTaskomega3pi(); | |
129 | //mgr->AddTask(taskomega); | |
130 | ||
131 | ||
132 | ||
d92b41ad | 133 | //----------------------- |
134 | // Run the analysis | |
135 | //----------------------- | |
136 | TString smode = ""; | |
137 | if (mode==mLocal || mode == mLocalCAF) | |
138 | smode = "local"; | |
139 | else if (mode==mPROOF) | |
140 | smode = "proof"; | |
141 | else if (mode==mGRID) | |
29d1ef1d | 142 | smode = "local"; |
d92b41ad | 143 | |
144 | mgr->InitAnalysis(); | |
145 | mgr->PrintStatus(); | |
146 | mgr->StartAnalysis(smode.Data(),chain); | |
3e0577a2 | 147 | |
148 | cout <<" Analysis ended sucessfully "<< endl ; | |
149 | ||
d92b41ad | 150 | } |
151 | else cout << "Chain was not produced ! "<<endl; | |
152 | ||
153 | } | |
154 | ||
155 | void LoadLibraries(const anaModes mode) { | |
156 | ||
157 | //-------------------------------------- | |
158 | // Load the needed libraries most of them already loaded by aliroot | |
159 | //-------------------------------------- | |
160 | gSystem->Load("libTree.so"); | |
161 | gSystem->Load("libGeom.so"); | |
162 | gSystem->Load("libVMC.so"); | |
163 | gSystem->Load("libXMLIO.so"); | |
164 | ||
165 | //---------------------------------------------------------- | |
166 | // >>>>>>>>>>> Local mode <<<<<<<<<<<<<< | |
167 | //---------------------------------------------------------- | |
168 | if (mode==mLocal || mode == mLocalCAF || mode == mGRID) { | |
169 | //-------------------------------------------------------- | |
170 | // If you want to use already compiled libraries | |
171 | // in the aliroot distribution | |
172 | //-------------------------------------------------------- | |
c8fe2783 | 173 | //gSystem->Load("/Users/Gustavo/Work/analysis/STEERBase/libSTEERBase.so"); |
174 | //gSystem->Load("/Users/Gustavo/Work/analysis/ESD/libESD.so"); | |
175 | //gSystem->Load("/Users/Gustavo/Work/analysis/AOD/libAOD.so"); | |
176 | //gSystem->Load("/Users/Gustavo/Work/analysis/ANALYSIS/libANALYSIS.so"); | |
177 | //gSystem->Load("/Users/Gustavo/Work/analysis/ANALYSISalice/libANALYSISalice.so"); | |
3e0577a2 | 178 | //gSystem->Load("libPHOSUtils"); |
c8fe2783 | 179 | //gSystem->Load("/Users/Gustavo/Work/analysis/PWG4PartCorrBase/libPWG4PartCorrBase.so"); |
180 | //gSystem->Load("/Users/Gustavo/Work/analysis/PWG4PartCorrDep/libPWG4PartCorrDep.so"); | |
3e0577a2 | 181 | |
c8fe2783 | 182 | gSystem->Load("libSTEERBase.so"); |
183 | gSystem->Load("libESD.so"); | |
184 | gSystem->Load("libAOD.so"); | |
185 | gSystem->Load("libANALYSIS.so"); | |
186 | gSystem->Load("libANALYSISalice.so"); | |
187 | gSystem->Load("libPHOSUtils"); | |
188 | gSystem->Load("libEMCALUtils"); | |
189 | gSystem->Load("libPWG4PartCorrBase.so"); | |
190 | gSystem->Load("libPWG4PartCorrDep.so"); | |
191 | gSystem->Load("libPWG4omega3pi.so"); | |
192 | gSystem->Load("libCORRFW.so"); | |
193 | gSystem->Load("libPWG3base.so"); | |
194 | gSystem->Load("libPWG3muon.so"); | |
195 | ||
d92b41ad | 196 | //-------------------------------------------------------- |
197 | //If you want to use root and par files from aliroot | |
198 | //-------------------------------------------------------- | |
c8fe2783 | 199 | // SetupPar("STEERBase"); |
200 | // SetupPar("ESD"); | |
201 | // SetupPar("AOD"); | |
202 | // SetupPar("ANALYSIS"); | |
203 | // SetupPar("ANALYSISalice"); | |
204 | // //If your analysis needs PHOS geometry uncomment following lines | |
205 | // SetupPar("PHOSUtils"); | |
206 | // SetupPar("EMCALUtils"); | |
207 | // // //Create Geometry | |
208 | // // TGeoManager::Import("geometry.root") ; //need file "geometry.root" in local dir!!!! | |
209 | // SetupPar("PWG4PartCorrBase"); | |
210 | // SetupPar("PWG4PartCorrDep"); | |
211 | // //SetupPar("PWG4omega3pi"); | |
d92b41ad | 212 | } |
213 | ||
214 | //--------------------------------------------------------- | |
215 | // <<<<<<<<<< PROOF mode >>>>>>>>>>>> | |
216 | //--------------------------------------------------------- | |
217 | else if (mode==mPROOF) { | |
218 | // | |
219 | // Connect to proof | |
220 | // Put appropriate username here | |
221 | // TProof::Reset("proof://mgheata@lxb6046.cern.ch"); | |
222 | TProof::Open("proof://mgheata@lxb6046.cern.ch"); | |
223 | ||
224 | // gProof->ClearPackages(); | |
225 | // gProof->ClearPackage("ESD"); | |
226 | // gProof->ClearPackage("AOD"); | |
227 | // gProof->ClearPackage("ANALYSIS"); | |
3e0577a2 | 228 | // gProof->ClearPackage("PWG4PartCorrBase"); |
229 | // gProof->ClearPackage("PWG4PartCorrDep"); | |
d92b41ad | 230 | |
231 | // Enable the STEERBase Package | |
232 | gProof->UploadPackage("STEERBase.par"); | |
233 | gProof->EnablePackage("STEERBase"); | |
234 | // Enable the ESD Package | |
235 | gProof->UploadPackage("ESD.par"); | |
236 | gProof->EnablePackage("ESD"); | |
237 | // Enable the AOD Package | |
238 | gProof->UploadPackage("AOD.par"); | |
239 | gProof->EnablePackage("AOD"); | |
240 | // Enable the Analysis Package | |
241 | gProof->UploadPackage("ANALYSIS.par"); | |
242 | gProof->EnablePackage("ANALYSIS"); | |
3e0577a2 | 243 | // Enable the PHOS geometry Package |
c8fe2783 | 244 | //gProof->UploadPackage("PHOSUtils.par"); |
245 | //gProof->EnablePackage("PHOSUtils"); | |
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 | ||
256 | void 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 $ALICE_ROOT/%s .", parpar.Data()) ; |
d92b41ad | 270 | gROOT->ProcessLine(processline.Data()) ; |
271 | } | |
272 | if ( gSystem->AccessPathName(pararchivename) ) { | |
273 | TString processline = Form(".! tar xvzf %s",parpar.Data()) ; | |
274 | gROOT->ProcessLine(processline.Data()); | |
275 | } | |
276 | ||
277 | TString ocwd = gSystem->WorkingDirectory(); | |
278 | gSystem->ChangeDirectory(pararchivename); | |
279 | ||
280 | // check for BUILD.sh and execute | |
281 | if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) { | |
282 | printf("*******************************\n"); | |
283 | printf("*** Building PAR archive ***\n"); | |
284 | cout<<pararchivename<<endl; | |
285 | printf("*******************************\n"); | |
286 | ||
287 | if (gSystem->Exec("PROOF-INF/BUILD.sh")) { | |
288 | Error("runProcess","Cannot Build the PAR Archive! - Abort!"); | |
289 | return -1; | |
290 | } | |
291 | } | |
292 | // check for SETUP.C and execute | |
293 | if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) { | |
294 | printf("*******************************\n"); | |
295 | printf("*** Setup PAR archive ***\n"); | |
296 | cout<<pararchivename<<endl; | |
297 | printf("*******************************\n"); | |
298 | gROOT->Macro("PROOF-INF/SETUP.C"); | |
299 | } | |
300 | ||
301 | gSystem->ChangeDirectory(ocwd.Data()); | |
302 | printf("Current dir: %s\n", ocwd.Data()); | |
303 | } | |
304 | ||
305 | ||
306 | ||
307 | void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){ | |
308 | //Fills chain with data | |
309 | TString ocwd = gSystem->WorkingDirectory(); | |
310 | ||
311 | //----------------------------------------------------------- | |
312 | //Analysis of CAF data locally and with PROOF | |
313 | //----------------------------------------------------------- | |
314 | if(mode ==mPROOF || mode ==mLocalCAF){ | |
315 | // Chain from CAF | |
316 | gROOT->LoadMacro("$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 | |
c8fe2783 | 327 | //to analyze (NFILES) and the pattern name of the directories with files (PATTERN) |
d92b41ad | 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 | ||
c8fe2783 | 337 | if(gSystem->Getenv("NFILES")) |
338 | kFile = atoi(gSystem->Getenv("NFILES")) ; | |
339 | else cout<<"NFILES not set, use default: "<<kFile<<endl; | |
d92b41ad | 340 | |
341 | //Check if env variables are set and are correct | |
c8fe2783 | 342 | if ( kInDir && kFile) { |
343 | printf("Get %d files from directory %s\n",kFile,kInDir); | |
d92b41ad | 344 | if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist |
345 | printf("%s does not exist\n", kInDir) ; | |
346 | return ; | |
347 | } | |
c8fe2783 | 348 | |
349 | //if(gSystem->Getenv("XSFILE")) | |
350 | //kXSFileName = gSystem->Getenv("XSFILE") ; | |
351 | //else cout<<" XS file name not set, use default: "<<kXSFileName<<endl; | |
352 | char * kGener = gSystem->Getenv("GENER"); | |
353 | if(kGener) { | |
354 | cout<<"GENER "<<kGener<<endl; | |
355 | if(!strcmp(kGener,"PYTHIA")) kXSFileName = "pyxsec.root"; | |
356 | else if(!strcmp(kGener,"HERWIG")) kXSFileName = "hexsec.root"; | |
357 | else cout<<" UNKNOWN GENER, use default: "<<kXSFileName<<endl; | |
358 | } | |
359 | else cout<<" GENER not set, use default xs file name: "<<kXSFileName<<endl; | |
360 | ||
361 | cout<<"INDIR : "<<kInDir<<endl; | |
362 | cout<<"NFILES : "<<kFile<<endl; | |
363 | cout<<"PATTERN : " <<kPattern<<endl; | |
364 | cout<<"XSFILE : "<<kXSFileName<<endl; | |
365 | ||
7175a03a | 366 | TString datafile=""; |
367 | if(kInputData == "ESD") datafile = "AliESDs.root" ; | |
c8fe2783 | 368 | else if(kInputData == "AOD") datafile = "AliAOD.root" ; |
7175a03a | 369 | else if(kInputData == "MC") datafile = "galice.root" ; |
370 | ||
d92b41ad | 371 | //Loop on ESD files, add them to chain |
372 | Int_t event =0; | |
373 | Int_t skipped=0 ; | |
374 | char file[120] ; | |
375 | char filexs[120] ; | |
376 | ||
c8fe2783 | 377 | for (event = 0 ; event < kFile ; event++) { |
7175a03a | 378 | sprintf(file, "%s/%s%d/%s", kInDir,kPattern,event,datafile.Data()) ; |
d92b41ad | 379 | sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ; |
380 | TFile * fESD = 0 ; | |
381 | //Check if file exists and add it, if not skip it | |
382 | if ( fESD = TFile::Open(file)) { | |
7175a03a | 383 | if ( fESD->Get(kTreeName) ) { |
d92b41ad | 384 | printf("++++ Adding %s\n", file) ; |
385 | chain->AddFile(file); | |
386 | chainxs->Add(filexs) ; | |
387 | } | |
388 | } | |
389 | else { | |
390 | printf("---- Skipping %s\n", file) ; | |
391 | skipped++ ; | |
392 | } | |
393 | } | |
c8fe2783 | 394 | printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped*100) ; |
d92b41ad | 395 | } |
396 | else { | |
397 | TString input = "AliESDs.root" ; | |
398 | cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl; | |
399 | chain->AddFile(input); | |
400 | } | |
401 | ||
402 | }// local files analysis | |
403 | ||
404 | //------------------------------ | |
405 | //GRID xml files | |
406 | //----------------------------- | |
407 | else if(mode == mGRID){ | |
408 | //Get colection file. It is specified by the environmental | |
409 | //variable XML | |
410 | ||
411 | if(gSystem->Getenv("XML") ) | |
412 | kXML = gSystem->Getenv("XML"); | |
413 | else | |
414 | sprintf(kXML, "collection.xml") ; | |
415 | ||
416 | if (!TFile::Open(kXML)) { | |
417 | printf("No collection file with name -- %s -- was found\n",kXML); | |
418 | return ; | |
419 | } | |
420 | else cout<<"XML file "<<kXML<<endl; | |
421 | ||
422 | //Load necessary libraries and connect to the GRID | |
423 | gSystem->Load("libNetx.so") ; | |
424 | gSystem->Load("libRAliEn.so"); | |
425 | TGrid::Connect("alien://") ; | |
426 | ||
427 | //Feed Grid with collection file | |
428 | //TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML)); | |
429 | TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML); | |
430 | if (! collection) { | |
431 | AliError(Form("%s not found", kXML)) ; | |
432 | return kFALSE ; | |
433 | } | |
434 | TGridResult* result = collection->GetGridResult("",0 ,0); | |
435 | ||
436 | // Makes the ESD chain | |
437 | printf("*** Getting the Chain ***\n"); | |
438 | for (Int_t index = 0; index < result->GetEntries(); index++) { | |
439 | TString alienURL = result->GetKey(index, "turl") ; | |
440 | cout << "================== " << alienURL << endl ; | |
441 | chain->Add(alienURL) ; | |
442 | alienURL.ReplaceAll("AliESDs.root",kXSFileName); | |
443 | chainxs->Add(alienURL) ; | |
444 | } | |
445 | }// xml analysis | |
446 | ||
447 | gSystem->ChangeDirectory(ocwd.Data()); | |
448 | } | |
449 | ||
450 | //________________________________________________ | |
451 | void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr) | |
452 | { | |
453 | // Read the PYTHIA statistics from the file pyxsec.root created by | |
454 | // the function WriteXsection(): | |
455 | // integrated cross section (xsection) and | |
456 | // the number of Pyevent() calls (ntrials) | |
457 | // and calculate the weight per one event xsection/ntrials | |
458 | // The spectrum calculated by a user should be | |
459 | // multiplied by this weight, something like this: | |
460 | // TH1F *userSpectrum ... // book and fill the spectrum | |
461 | // userSpectrum->Scale(weight) | |
462 | // | |
463 | // Yuri Kharlov 19 June 2007 | |
464 | // Gustavo Conesa 15 April 2008 | |
465 | Double_t xsection = 0; | |
466 | UInt_t ntrials = 0; | |
467 | xs = 0; | |
468 | ntr = 0; | |
469 | ||
470 | Int_t nfiles = tree->GetEntries() ; | |
471 | if (tree && nfiles > 0) { | |
472 | tree->SetBranchAddress("xsection",&xsection); | |
473 | tree->SetBranchAddress("ntrials",&ntrials); | |
474 | for(Int_t i = 0; i < nfiles; i++){ | |
475 | tree->GetEntry(i); | |
476 | xs += xsection ; | |
477 | ntr += ntrials ; | |
478 | cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl; | |
479 | } | |
480 | ||
481 | xs = xs / nfiles; | |
482 | ntr = ntr / nfiles; | |
483 | cout << "-----------------------------------------------------------------"<<endl; | |
484 | cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl; | |
485 | cout << "-----------------------------------------------------------------"<<endl; | |
486 | } | |
487 | else cout << " >>>> Empty tree !!!! <<<<< "<<endl; | |
488 | ||
489 | } | |
490 | ||
491 | ||
492 |