]>
Commit | Line | Data |
---|---|---|
c8fe2783 | 1 | /* $Id$ */ |
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 | //------------------------------------------------- | |
8e3bc7b6 | 13 | enum anaModes {mLocal, mLocalCAF,mPROOF,mGRID}; |
c8fe2783 | 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, NFILES, respectivelly | |
8e3bc7b6 | 22 | //char * kInDir = "/Users/Gustavo/Work/mixed/data"; |
c8fe2783 | 23 | char * kPattern = ""; // Data are in files kInDir/kPattern+i |
24 | Int_t kFile = 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 | //--------------------------------------------------------------------------- | |
36 | ||
37 | const Bool_t kMC = kFALSE; //With real data kMC = kFALSE | |
38 | const TString kInputData = "AOD"; //ESD, AOD, MC | |
39 | TString kTreeName ; | |
40 | ||
8e3bc7b6 | 41 | void anaM(Int_t mode=mLocal) |
c8fe2783 | 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. | |
54 | //------------------------------------------------------------------------------------------------- | |
55 | if(kInputData == "ESD") kTreeName = "esdTree" ; | |
56 | else if(kInputData == "AOD") kTreeName = "aodTree" ; | |
57 | else if (kInputData == "MC") kTreeName = "TE" ; | |
58 | else { | |
59 | cout<<"Wrong data type "<<kInputData<<endl; | |
60 | break; | |
61 | } | |
62 | ||
63 | TChain *chain = new TChain(kTreeName) ; | |
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 | |
75 | if((kMC || kInputData == "MC") && kInputData!="AOD"){ | |
76 | AliMCEventHandler* mcHandler = new AliMCEventHandler(); | |
77 | mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file | |
78 | mgr->SetMCtruthEventHandler(mcHandler); | |
79 | if( kInputData == "MC") mgr->SetInputEventHandler(NULL); | |
80 | } | |
81 | ||
82 | // AOD output handler | |
8e3bc7b6 | 83 | // AliAODHandler* aodoutHandler = new AliAODHandler(); |
84 | // aodoutHandler->SetOutputFileName("aod.root"); | |
85 | // ////aodoutHandler->SetCreateNonStandardAOD(); | |
86 | // mgr->SetOutputEventHandler(aodoutHandler); | |
c8fe2783 | 87 | |
88 | //input | |
89 | Int_t maxiterations = 1; | |
90 | AliEventPoolLoop* pool = new AliEventPoolLoop(maxiterations); | |
91 | pool->SetChain(chain); | |
8e3bc7b6 | 92 | Int_t eventsInPool = 2; |
c8fe2783 | 93 | AliMultiEventInputHandler *inpHandler = NULL ; |
94 | if(kInputData == "ESD"){ | |
95 | // ESD handler | |
8e3bc7b6 | 96 | printf("ESD MultiInput \n"); |
97 | inpHandler = new AliMultiEventInputHandler(eventsInPool, 0); | |
c8fe2783 | 98 | } |
99 | if(kInputData == "AOD"){ | |
100 | // AOD handler | |
8e3bc7b6 | 101 | inpHandler = new AliMultiEventInputHandler(eventsInPool, 1); |
c8fe2783 | 102 | } |
103 | mgr->SetInputEventHandler(inpHandler); | |
104 | cout<<"Input handler "<<mgr->GetInputEventHandler()<<endl; | |
105 | mgr->SetEventPool(pool); | |
106 | inpHandler->SetEventPool(pool); | |
107 | ||
108 | //mgr->SetDebugLevel(10); // For debugging, do not uncomment if you want no messages. | |
109 | ||
110 | //------------------------------------------------------------------------- | |
111 | //Define task, put here any other task that you want to use. | |
112 | //------------------------------------------------------------------------- | |
113 | // AliAnalysisDataContainer *cinput1 = mgr->GetCommonInputContainer(); | |
114 | // AliAnalysisDataContainer *coutput1 = mgr->GetCommonOutputContainer(); | |
115 | ||
116 | //gROOT->LoadMacro("$ALICE_ROOT/ANALYSIS/macros/AddTaskESDFilter.C"); | |
117 | //AliAnalysisTaskESDfilter *taskesdfilter = AddTaskESDFilter(kTRUE); | |
118 | ||
119 | gROOT->LoadMacro("AddTaskPartCorrM.C"); | |
120 | ||
8e3bc7b6 | 121 | AliAnalysisTaskParticleCorrelationM *taskEMCAL = AddTaskPartCorrM(kInputData,"EMCAL", kFALSE,kFALSE,kFALSE,kTRUE); |
c8fe2783 | 122 | mgr->AddTask(taskEMCAL); |
8e3bc7b6 | 123 | AliAnalysisTaskParticleCorrelationM *taskPHOS = AddTaskPartCorrM(kInputData,"PHOS", kFALSE, kFALSE); |
c8fe2783 | 124 | mgr->AddTask(taskPHOS); |
125 | ||
126 | //gROOT->LoadMacro("$ALICE_ROOT/PWG4/macros/AddTaskCalorimeterQA.C"); | |
127 | //gROOT->LoadMacro("AddTaskCalorimeterQA.C"); | |
128 | //AliAnalysisTaskParticleCorrelation *taskQA = AddTaskCalorimeterQA(kInputData,kFALSE,kTRUE); | |
129 | ||
130 | //gROOT->LoadMacro("$ALICE_ROOT/PWG4/macros/AddTaskomega3pi.C"); | |
131 | //AliAnalysisTaskOmegaPi0PiPi * taskomega = AddTaskomega3pi(); | |
132 | //mgr->AddTask(taskomega); | |
133 | ||
134 | ||
135 | ||
136 | //----------------------- | |
137 | // Run the analysis | |
138 | //----------------------- | |
139 | TString smode = ""; | |
140 | if (mode==mLocal || mode == mLocalCAF) | |
8e3bc7b6 | 141 | smode = "mix"; |
c8fe2783 | 142 | else if (mode==mPROOF) |
143 | smode = "proof"; | |
144 | else if (mode==mGRID) | |
c8fe2783 | 145 | smode = "mix"; |
146 | ||
147 | mgr->InitAnalysis(); | |
148 | mgr->PrintStatus(); | |
149 | mgr->StartAnalysis(smode.Data(),chain,1000); | |
150 | ||
151 | cout <<" Analysis ended sucessfully "<< endl ; | |
152 | ||
153 | } | |
154 | else cout << "Chain was not produced ! "<<endl; | |
155 | ||
156 | } | |
157 | ||
158 | void LoadLibraries(const anaModes mode) { | |
159 | ||
160 | //-------------------------------------- | |
161 | // Load the needed libraries most of them already loaded by aliroot | |
162 | //-------------------------------------- | |
163 | gSystem->Load("libTree.so"); | |
164 | gSystem->Load("libGeom.so"); | |
165 | gSystem->Load("libVMC.so"); | |
166 | gSystem->Load("libXMLIO.so"); | |
54769bc0 | 167 | gSystem->Load("libMatrix.so"); |
168 | gSystem->Load("libPhysics.so"); | |
169 | ||
c8fe2783 | 170 | //---------------------------------------------------------- |
171 | // >>>>>>>>>>> Local mode <<<<<<<<<<<<<< | |
172 | //---------------------------------------------------------- | |
8e3bc7b6 | 173 | if (mode==mLocal || mode == mLocalCAF || mode == mGRID) { |
c8fe2783 | 174 | //-------------------------------------------------------- |
175 | // If you want to use already compiled libraries | |
176 | // in the aliroot distribution | |
177 | //-------------------------------------------------------- | |
178 | //gSystem->Load("/Users/Gustavo/Work/analysis/STEERBase/libSTEERBase.so"); | |
179 | //gSystem->Load("/Users/Gustavo/Work/analysis/ESD/libESD.so"); | |
180 | //gSystem->Load("/Users/Gustavo/Work/analysis/AOD/libAOD.so"); | |
181 | //gSystem->Load("/Users/Gustavo/Work/analysis/ANALYSIS/libANALYSIS.so"); | |
182 | //gSystem->Load("/Users/Gustavo/Work/analysis/ANALYSISalice/libANALYSISalice.so"); | |
183 | //gSystem->Load("libPHOSUtils"); | |
184 | //gSystem->Load("/Users/Gustavo/Work/analysis/PWG4PartCorrBase/libPWG4PartCorrBase.so"); | |
185 | //gSystem->Load("/Users/Gustavo/Work/analysis/PWG4PartCorrDep/libPWG4PartCorrDep.so"); | |
186 | ||
187 | gSystem->Load("libSTEERBase.so"); | |
188 | gSystem->Load("libESD.so"); | |
189 | gSystem->Load("libAOD.so"); | |
190 | gSystem->Load("libANALYSIS.so"); | |
191 | gSystem->Load("libANALYSISalice.so"); | |
192 | gSystem->Load("libPHOSUtils"); | |
193 | gSystem->Load("libEMCALUtils"); | |
194 | gSystem->Load("libPWG4PartCorrBase.so"); | |
195 | gSystem->Load("libPWG4PartCorrDep.so"); | |
196 | // gSystem->Load("libPWG4omega3pi.so"); | |
197 | // gSystem->Load("libCORRFW.so"); | |
198 | // gSystem->Load("libPWG3base.so"); | |
199 | // gSystem->Load("libPWG3muon.so"); | |
200 | ||
201 | //-------------------------------------------------------- | |
202 | //If you want to use root and par files from aliroot | |
203 | //-------------------------------------------------------- | |
204 | // SetupPar("STEERBase"); | |
205 | // SetupPar("ESD"); | |
206 | // SetupPar("AOD"); | |
207 | // SetupPar("ANALYSIS"); | |
208 | // SetupPar("ANALYSISalice"); | |
209 | // //If your analysis needs PHOS geometry uncomment following lines | |
210 | // SetupPar("PHOSUtils"); | |
211 | // SetupPar("EMCALUtils"); | |
212 | // // //Create Geometry | |
213 | // // TGeoManager::Import("geometry.root") ; //need file "geometry.root" in local dir!!!! | |
214 | // SetupPar("PWG4PartCorrBase"); | |
215 | // SetupPar("PWG4PartCorrDep"); | |
216 | // //SetupPar("PWG4omega3pi"); | |
217 | } | |
218 | ||
219 | //--------------------------------------------------------- | |
220 | // <<<<<<<<<< PROOF mode >>>>>>>>>>>> | |
221 | //--------------------------------------------------------- | |
222 | else if (mode==mPROOF) { | |
223 | // | |
224 | // Connect to proof | |
225 | // Put appropriate username here | |
226 | // TProof::Reset("proof://mgheata@lxb6046.cern.ch"); | |
227 | TProof::Open("proof://mgheata@lxb6046.cern.ch"); | |
228 | ||
229 | // gProof->ClearPackages(); | |
230 | // gProof->ClearPackage("ESD"); | |
231 | // gProof->ClearPackage("AOD"); | |
232 | // gProof->ClearPackage("ANALYSIS"); | |
233 | // gProof->ClearPackage("PWG4PartCorrBase"); | |
234 | // gProof->ClearPackage("PWG4PartCorrDep"); | |
235 | ||
236 | // Enable the STEERBase Package | |
237 | gProof->UploadPackage("STEERBase.par"); | |
238 | gProof->EnablePackage("STEERBase"); | |
239 | // Enable the ESD Package | |
240 | gProof->UploadPackage("ESD.par"); | |
241 | gProof->EnablePackage("ESD"); | |
242 | // Enable the AOD Package | |
243 | gProof->UploadPackage("AOD.par"); | |
244 | gProof->EnablePackage("AOD"); | |
245 | // Enable the Analysis Package | |
246 | gProof->UploadPackage("ANALYSIS.par"); | |
247 | gProof->EnablePackage("ANALYSIS"); | |
8e3bc7b6 | 248 | // Enable the PHOS geometry Package |
c8fe2783 | 249 | //gProof->UploadPackage("PHOSUtils.par"); |
250 | //gProof->EnablePackage("PHOSUtils"); | |
251 | // Enable PartCorr analysis | |
252 | gProof->UploadPackage("PWG4PartCorrBase.par"); | |
253 | gProof->EnablePackage("PWG4PartCorrBase"); | |
8e3bc7b6 | 254 | gProof->UploadPackage("PWG4PartCorrDep.par"); |
c8fe2783 | 255 | gProof->EnablePackage("PWG4PartCorrDep"); |
256 | gProof->ShowEnabledPackages(); | |
257 | } | |
258 | ||
259 | } | |
260 | ||
261 | void SetupPar(char* pararchivename) | |
262 | { | |
263 | //Load par files, create analysis libraries | |
264 | //For testing, if par file already decompressed and modified | |
265 | //classes then do not decompress. | |
266 | ||
267 | TString cdir(Form("%s", gSystem->WorkingDirectory() )) ; | |
268 | TString parpar(Form("%s.par", pararchivename)) ; | |
269 | if ( gSystem->AccessPathName(parpar.Data()) ) { | |
270 | gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ; | |
271 | TString processline(Form(".! make %s", parpar.Data())) ; | |
272 | gROOT->ProcessLine(processline.Data()) ; | |
273 | gSystem->ChangeDirectory(cdir) ; | |
274 | processline = Form(".! mv $ALICE_ROOT/%s .", parpar.Data()) ; | |
275 | gROOT->ProcessLine(processline.Data()) ; | |
276 | } | |
277 | if ( gSystem->AccessPathName(pararchivename) ) { | |
278 | TString processline = Form(".! tar xvzf %s",parpar.Data()) ; | |
279 | gROOT->ProcessLine(processline.Data()); | |
280 | } | |
281 | ||
282 | TString ocwd = gSystem->WorkingDirectory(); | |
283 | gSystem->ChangeDirectory(pararchivename); | |
284 | ||
285 | // check for BUILD.sh and execute | |
286 | if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) { | |
287 | printf("*******************************\n"); | |
288 | printf("*** Building PAR archive ***\n"); | |
289 | cout<<pararchivename<<endl; | |
290 | printf("*******************************\n"); | |
291 | ||
292 | if (gSystem->Exec("PROOF-INF/BUILD.sh")) { | |
293 | Error("runProcess","Cannot Build the PAR Archive! - Abort!"); | |
294 | return -1; | |
295 | } | |
296 | } | |
297 | // check for SETUP.C and execute | |
298 | if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) { | |
299 | printf("*******************************\n"); | |
300 | printf("*** Setup PAR archive ***\n"); | |
301 | cout<<pararchivename<<endl; | |
302 | printf("*******************************\n"); | |
303 | gROOT->Macro("PROOF-INF/SETUP.C"); | |
304 | } | |
305 | ||
306 | gSystem->ChangeDirectory(ocwd.Data()); | |
307 | printf("Current dir: %s\n", ocwd.Data()); | |
308 | } | |
309 | ||
310 | ||
311 | ||
312 | void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){ | |
313 | //Fills chain with data | |
314 | TString ocwd = gSystem->WorkingDirectory(); | |
315 | ||
316 | //----------------------------------------------------------- | |
317 | //Analysis of CAF data locally and with PROOF | |
318 | //----------------------------------------------------------- | |
319 | if(mode ==mPROOF || mode ==mLocalCAF){ | |
320 | // Chain from CAF | |
321 | gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C"); | |
322 | // The second parameter is the number of input files in the chain | |
323 | chain = CreateESDChain("ESD12001.txt", 5); | |
324 | } | |
325 | ||
326 | //--------------------------------------- | |
327 | //Local files analysis | |
328 | //--------------------------------------- | |
8e3bc7b6 | 329 | else if(mode == mLocal){ |
c8fe2783 | 330 | //If you want to add several ESD files sitting in a common directory INDIR |
331 | //Specify as environmental variables the directory (INDIR), the number of files | |
332 | //to analyze (NFILES) and the pattern name of the directories with files (PATTERN) | |
333 | ||
334 | if(gSystem->Getenv("INDIR")) | |
335 | kInDir = gSystem->Getenv("INDIR") ; | |
336 | else cout<<"INDIR not set, use default: "<<kInDir<<endl; | |
337 | ||
338 | if(gSystem->Getenv("PATTERN")) | |
339 | kPattern = gSystem->Getenv("PATTERN") ; | |
340 | else cout<<"PATTERN not set, use default: "<<kPattern<<endl; | |
341 | ||
342 | if(gSystem->Getenv("NFILES")) | |
343 | kFile = atoi(gSystem->Getenv("NFILES")) ; | |
344 | else cout<<"NFILES not set, use default: "<<kFile<<endl; | |
345 | ||
346 | //Check if env variables are set and are correct | |
347 | if ( kInDir && kFile) { | |
348 | printf("Get %d files from directory %s\n",kFile,kInDir); | |
349 | if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist | |
350 | printf("%s does not exist\n", kInDir) ; | |
351 | return ; | |
352 | } | |
353 | ||
354 | //if(gSystem->Getenv("XSFILE")) | |
355 | //kXSFileName = gSystem->Getenv("XSFILE") ; | |
356 | //else cout<<" XS file name not set, use default: "<<kXSFileName<<endl; | |
357 | char * kGener = gSystem->Getenv("GENER"); | |
358 | if(kGener) { | |
359 | cout<<"GENER "<<kGener<<endl; | |
360 | if(!strcmp(kGener,"PYTHIA")) kXSFileName = "pyxsec.root"; | |
361 | else if(!strcmp(kGener,"HERWIG")) kXSFileName = "hexsec.root"; | |
362 | else cout<<" UNKNOWN GENER, use default: "<<kXSFileName<<endl; | |
363 | } | |
364 | else cout<<" GENER not set, use default xs file name: "<<kXSFileName<<endl; | |
365 | ||
366 | cout<<"INDIR : "<<kInDir<<endl; | |
367 | cout<<"NFILES : "<<kFile<<endl; | |
368 | cout<<"PATTERN : " <<kPattern<<endl; | |
369 | cout<<"XSFILE : "<<kXSFileName<<endl; | |
370 | ||
371 | TString datafile=""; | |
372 | if(kInputData == "ESD") datafile = "AliESDs.root" ; | |
373 | else if(kInputData == "AOD") datafile = "AliAOD.root" ; | |
374 | else if(kInputData == "MC") datafile = "galice.root" ; | |
375 | ||
376 | //Loop on ESD files, add them to chain | |
377 | Int_t event =0; | |
378 | Int_t skipped=0 ; | |
379 | char file[120] ; | |
380 | char filexs[120] ; | |
381 | ||
382 | for (event = 0 ; event < kFile ; event++) { | |
383 | sprintf(file, "%s/%s%d/%s", kInDir,kPattern,event,datafile.Data()) ; | |
384 | sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ; | |
385 | TFile * fESD = 0 ; | |
386 | //Check if file exists and add it, if not skip it | |
387 | if ( fESD = TFile::Open(file)) { | |
388 | if ( fESD->Get(kTreeName) ) { | |
389 | printf("++++ Adding %s\n", file) ; | |
390 | chain->AddFile(file); | |
391 | chainxs->Add(filexs) ; | |
392 | } | |
393 | } | |
394 | else { | |
395 | printf("---- Skipping %s\n", file) ; | |
396 | skipped++ ; | |
397 | } | |
398 | } | |
399 | printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped*100) ; | |
400 | } | |
401 | else { | |
402 | TString input = "AliESDs.root" ; | |
403 | cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl; | |
404 | chain->AddFile(input); | |
405 | } | |
406 | ||
407 | }// local files analysis | |
408 | ||
409 | //------------------------------ | |
410 | //GRID xml files | |
411 | //----------------------------- | |
412 | else if(mode == mGRID){ | |
413 | //Get colection file. It is specified by the environmental | |
414 | //variable XML | |
415 | ||
416 | if(gSystem->Getenv("XML") ) | |
417 | kXML = gSystem->Getenv("XML"); | |
418 | else | |
419 | sprintf(kXML, "collection.xml") ; | |
420 | ||
421 | if (!TFile::Open(kXML)) { | |
422 | printf("No collection file with name -- %s -- was found\n",kXML); | |
423 | return ; | |
424 | } | |
425 | else cout<<"XML file "<<kXML<<endl; | |
426 | ||
427 | //Load necessary libraries and connect to the GRID | |
428 | gSystem->Load("libNetx.so") ; | |
429 | gSystem->Load("libRAliEn.so"); | |
430 | TGrid::Connect("alien://") ; | |
431 | ||
432 | //Feed Grid with collection file | |
433 | //TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML)); | |
434 | TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML); | |
435 | if (! collection) { | |
436 | AliError(Form("%s not found", kXML)) ; | |
437 | return kFALSE ; | |
438 | } | |
439 | TGridResult* result = collection->GetGridResult("",0 ,0); | |
440 | ||
441 | // Makes the ESD chain | |
442 | printf("*** Getting the Chain ***\n"); | |
443 | for (Int_t index = 0; index < result->GetEntries(); index++) { | |
444 | TString alienURL = result->GetKey(index, "turl") ; | |
445 | cout << "================== " << alienURL << endl ; | |
446 | chain->Add(alienURL) ; | |
447 | alienURL.ReplaceAll("AliESDs.root",kXSFileName); | |
448 | chainxs->Add(alienURL) ; | |
449 | } | |
450 | }// xml analysis | |
451 | ||
452 | gSystem->ChangeDirectory(ocwd.Data()); | |
453 | } | |
454 | ||
455 | //________________________________________________ | |
456 | void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr) | |
457 | { | |
458 | // Read the PYTHIA statistics from the file pyxsec.root created by | |
459 | // the function WriteXsection(): | |
460 | // integrated cross section (xsection) and | |
461 | // the number of Pyevent() calls (ntrials) | |
462 | // and calculate the weight per one event xsection/ntrials | |
463 | // The spectrum calculated by a user should be | |
464 | // multiplied by this weight, something like this: | |
465 | // TH1F *userSpectrum ... // book and fill the spectrum | |
466 | // userSpectrum->Scale(weight) | |
467 | // | |
468 | // Yuri Kharlov 19 June 2007 | |
469 | // Gustavo Conesa 15 April 2008 | |
470 | Double_t xsection = 0; | |
471 | UInt_t ntrials = 0; | |
472 | xs = 0; | |
473 | ntr = 0; | |
474 | ||
475 | Int_t nfiles = tree->GetEntries() ; | |
476 | if (tree && nfiles > 0) { | |
477 | tree->SetBranchAddress("xsection",&xsection); | |
478 | tree->SetBranchAddress("ntrials",&ntrials); | |
479 | for(Int_t i = 0; i < nfiles; i++){ | |
480 | tree->GetEntry(i); | |
481 | xs += xsection ; | |
482 | ntr += ntrials ; | |
483 | cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl; | |
484 | } | |
485 | ||
486 | xs = xs / nfiles; | |
487 | ntr = ntr / nfiles; | |
488 | cout << "-----------------------------------------------------------------"<<endl; | |
489 | cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl; | |
490 | cout << "-----------------------------------------------------------------"<<endl; | |
491 | } | |
492 | else cout << " >>>> Empty tree !!!! <<<<< "<<endl; | |
493 | ||
494 | } | |
495 | ||
496 | ||
497 |