d92b41ad |
1 | /* $Id: $ */ |
2 | /* $Log$ |
3 | /* */ |
4 | |
5 | //-------------------------------------------------- |
6 | // Example macro to do analysis with the |
7 | // analysis classes in PWG4PartCorr |
8 | // Can be executed with Root and AliRoot |
9 | // |
10 | // Pay attention to the options and definitions |
11 | // set in the lines below |
12 | // |
13 | // Author : Gustavo Conesa Balbastre (INFN-LNF) |
14 | // |
15 | //------------------------------------------------- |
16 | enum anaModes {mLocal, mLocalCAF,mPROOF,mGRID}; |
17 | //mLocal: Analyze locally files in your computer |
18 | //mLocalCAF: Analyze locally CAF files |
19 | //mPROOF: Analyze CAF files with PROOF |
20 | |
21 | //--------------------------------------------------------------------------- |
22 | //Settings to read locally several files, only for "mLocal" mode |
23 | //The different values are default, they can be set with environmental |
24 | //variables: INDIR, PATTERN, NEVENT, respectivelly |
25 | char * kInDir = "/home/user/data"; |
26 | char * kPattern = ""; // Data are in diles /data/Run0, |
27 | // /Data/Run1 ... |
28 | Int_t kEvent = 1; // Number of files |
29 | //--------------------------------------------------------------------------- |
30 | //Collection file for grid analysis |
31 | char * kXML = "collection.xml"; |
32 | //--------------------------------------------------------------------------- |
33 | //Scale histograms from file. Change to kTRUE when xsection file exists |
34 | //Put name of file containing xsection |
35 | //Put number of events per ESD file |
36 | //This is an specific case for normalization of Pythia files. |
37 | const Bool_t kGetXSectionFromFileAndScale = kFALSE ; |
38 | const char * kXSFileName = "pyxsec.root"; |
39 | const Int_t kNumberOfEventsPerFile = 100; |
40 | //--------------------------------------------------------------------------- |
41 | |
42 | const Bool_t kMC = kTRUE; //With real data kMC = kFALSE |
43 | const TString kInputData = "ESD"; |
44 | void ana(Int_t mode=mLocal, TString configName = "ConfigAnalysisESDExample") |
45 | { |
46 | // Main |
47 | |
48 | //-------------------------------------------------------------------- |
49 | // Load analysis libraries |
50 | // Look at the method below, |
51 | // change whatever you need for your analysis case |
52 | // ------------------------------------------------------------------ |
53 | LoadLibraries(mode) ; |
54 | |
55 | //------------------------------------------------------------------------------------------------- |
56 | //Create chain from ESD and from cross sections files, look below for options. |
57 | //------------------------------------------------------------------------------------------------- |
58 | TChain *chain = new TChain("esdTree") ; |
59 | TChain * chainxs = new TChain("Xsection") ; |
60 | CreateChain(mode, chain, chainxs); |
61 | |
62 | if(chain){ |
63 | AliLog::SetGlobalLogLevel(AliLog::kError);//Minimum prints on screen |
64 | |
65 | //-------------------------------------- |
66 | // Make the analysis manager |
67 | //------------------------------------- |
68 | AliAnalysisManager *mgr = new AliAnalysisManager("Manager", "Manager"); |
69 | // MC handler |
70 | if(kMC){ |
71 | AliMCEventHandler* mcHandler = new AliMCEventHandler(); |
72 | mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file |
73 | mgr->SetMCtruthEventHandler(mcHandler); |
74 | } |
75 | |
76 | // AOD output handler |
77 | AliAODHandler* aodoutHandler = new AliAODHandler(); |
78 | aodoutHandler->SetOutputFileName("aod.root"); |
79 | //aodoutHandler->SetCreateNonStandardAOD(); |
80 | mgr->SetOutputEventHandler(aodoutHandler); |
81 | |
82 | //input |
83 | if(kInputData == "ESD"){ |
84 | // ESD handler |
85 | AliESDInputHandler *esdHandler = new AliESDInputHandler(); |
86 | mgr->SetInputEventHandler(esdHandler); |
87 | } |
88 | if(kInputData == "AOD"){ |
89 | // AOD handler |
90 | AliAODInputHandler *aodHandler = new AliAODInputHandler(); |
91 | mgr->SetInputEventHandler(aodHandler); |
92 | } |
93 | |
94 | //mgr->SetDebugLevel(10); // For debugging |
95 | |
96 | //------------------------------------------------------------------------- |
97 | //Define task, put here any other task that you want to use. |
98 | //------------------------------------------------------------------------- |
99 | AliAnalysisTaskParticleCorrelation * taskpwg4 = new AliAnalysisTaskParticleCorrelation ("Particle"); |
100 | taskpwg4->SetConfigFileName(configName); //Default name is ConfigAnalysis |
101 | mgr->AddTask(taskpwg4); |
102 | |
103 | // Create containers for input/output |
104 | AliAnalysisDataContainer *cinput1 = mgr->CreateContainer("cchain",TChain::Class(), |
105 | AliAnalysisManager::kInputContainer); |
106 | AliAnalysisDataContainer *coutput1 = mgr->CreateContainer("tree", TTree::Class(), |
107 | AliAnalysisManager::kOutputContainer, "default"); |
108 | AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("histos", TList::Class(), |
109 | AliAnalysisManager::kOutputContainer, "histos.root"); |
110 | |
111 | mgr->ConnectInput (taskpwg4, 0, cinput1); |
112 | mgr->ConnectOutput (taskpwg4, 0, coutput1 ); |
113 | mgr->ConnectOutput (taskpwg4, 1, coutput2 ); |
114 | |
115 | //------------------------ |
116 | //Scaling task |
117 | //----------------------- |
118 | Int_t nfiles = chainxs->GetEntries(); |
119 | if(kGetXSectionFromFileAndScale && nfiles > 0){ |
120 | //Get the cross section |
121 | Double_t xsection=0; |
122 | Float_t ntrials = 0; |
123 | GetAverageXsection(chainxs, xsection, ntrials); |
124 | |
125 | AliAnaScale * scale = new AliAnaScale("scale") ; |
126 | scale->Set(xsection/ntrials/kNumberOfEventsPerFile/nfiles) ; |
127 | mgr->AddTask(scale); |
128 | |
129 | AliAnalysisDataContainer *coutput3 = mgr->CreateContainer("histosscaled", TList::Class(), |
130 | AliAnalysisManager::kOutputContainer, "histosscaled.root"); |
131 | mgr->ConnectInput (scale, 0, coutput2); |
132 | mgr->ConnectOutput (scale, 0, coutput3 ); |
133 | } |
134 | |
135 | //----------------------- |
136 | // Run the analysis |
137 | //----------------------- |
138 | TString smode = ""; |
139 | if (mode==mLocal || mode == mLocalCAF) |
140 | smode = "local"; |
141 | else if (mode==mPROOF) |
142 | smode = "proof"; |
143 | else if (mode==mGRID) |
144 | smode = "grid"; |
145 | |
146 | mgr->InitAnalysis(); |
147 | mgr->PrintStatus(); |
148 | mgr->StartAnalysis(smode.Data(),chain); |
149 | } |
150 | else cout << "Chain was not produced ! "<<endl; |
151 | |
152 | } |
153 | |
154 | void LoadLibraries(const anaModes mode) { |
155 | |
156 | //-------------------------------------- |
157 | // Load the needed libraries most of them already loaded by aliroot |
158 | //-------------------------------------- |
159 | gSystem->Load("libTree.so"); |
160 | gSystem->Load("libGeom.so"); |
161 | gSystem->Load("libVMC.so"); |
162 | gSystem->Load("libXMLIO.so"); |
163 | |
164 | //---------------------------------------------------------- |
165 | // >>>>>>>>>>> Local mode <<<<<<<<<<<<<< |
166 | //---------------------------------------------------------- |
167 | if (mode==mLocal || mode == mLocalCAF || mode == mGRID) { |
168 | //-------------------------------------------------------- |
169 | // If you want to use already compiled libraries |
170 | // in the aliroot distribution |
171 | //-------------------------------------------------------- |
172 | //gSystem->Load("libSTEERBase"); |
173 | //gSystem->Load("libESD"); |
174 | //gSystem->Load("libAOD"); |
175 | //gSystem->Load("libANALYSIS"); |
176 | //gSystem->Load("libANALYSISalice"); |
177 | //gSystem->Load("libPWG4PartCorr"); |
178 | |
179 | //-------------------------------------------------------- |
180 | //If you want to use root and par files from aliroot |
181 | //-------------------------------------------------------- |
182 | SetupPar("STEERBase"); |
183 | SetupPar("ESD"); |
184 | SetupPar("AOD"); |
185 | SetupPar("ANALYSIS"); |
186 | SetupPar("ANALYSISalice"); |
187 | SetupPar("PWG4PartCorr"); |
188 | |
189 | } |
190 | |
191 | //--------------------------------------------------------- |
192 | // <<<<<<<<<< PROOF mode >>>>>>>>>>>> |
193 | //--------------------------------------------------------- |
194 | else if (mode==mPROOF) { |
195 | // |
196 | // Connect to proof |
197 | // Put appropriate username here |
198 | // TProof::Reset("proof://mgheata@lxb6046.cern.ch"); |
199 | TProof::Open("proof://mgheata@lxb6046.cern.ch"); |
200 | |
201 | // gProof->ClearPackages(); |
202 | // gProof->ClearPackage("ESD"); |
203 | // gProof->ClearPackage("AOD"); |
204 | // gProof->ClearPackage("ANALYSIS"); |
205 | // gProof->ClearPackage("PWG4PartCorr"); |
206 | |
207 | // Enable the STEERBase Package |
208 | gProof->UploadPackage("STEERBase.par"); |
209 | gProof->EnablePackage("STEERBase"); |
210 | // Enable the ESD Package |
211 | gProof->UploadPackage("ESD.par"); |
212 | gProof->EnablePackage("ESD"); |
213 | // Enable the AOD Package |
214 | gProof->UploadPackage("AOD.par"); |
215 | gProof->EnablePackage("AOD"); |
216 | // Enable the Analysis Package |
217 | gProof->UploadPackage("ANALYSIS.par"); |
218 | gProof->EnablePackage("ANALYSIS"); |
219 | // Enable gamma jet analysis |
220 | gProof->UploadPackage("PWG4PartCorr.par"); |
221 | gProof->EnablePackage("PWG4PartCorr"); |
222 | // |
223 | gProof->ShowEnabledPackages(); |
224 | } |
225 | |
226 | } |
227 | |
228 | void SetupPar(char* pararchivename) |
229 | { |
230 | //Load par files, create analysis libraries |
231 | //For testing, if par file already decompressed and modified |
232 | //classes then do not decompress. |
233 | |
234 | TString cdir(Form("%s", gSystem->WorkingDirectory() )) ; |
235 | TString parpar(Form("%s.par", pararchivename)) ; |
236 | if ( gSystem->AccessPathName(parpar.Data()) ) { |
237 | gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ; |
238 | TString processline(Form(".! make %s", parpar.Data())) ; |
239 | gROOT->ProcessLine(processline.Data()) ; |
240 | gSystem->ChangeDirectory(cdir) ; |
241 | processline = Form(".! mv /tmp/%s .", parpar.Data()) ; |
242 | gROOT->ProcessLine(processline.Data()) ; |
243 | } |
244 | if ( gSystem->AccessPathName(pararchivename) ) { |
245 | TString processline = Form(".! tar xvzf %s",parpar.Data()) ; |
246 | gROOT->ProcessLine(processline.Data()); |
247 | } |
248 | |
249 | TString ocwd = gSystem->WorkingDirectory(); |
250 | gSystem->ChangeDirectory(pararchivename); |
251 | |
252 | // check for BUILD.sh and execute |
253 | if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) { |
254 | printf("*******************************\n"); |
255 | printf("*** Building PAR archive ***\n"); |
256 | cout<<pararchivename<<endl; |
257 | printf("*******************************\n"); |
258 | |
259 | if (gSystem->Exec("PROOF-INF/BUILD.sh")) { |
260 | Error("runProcess","Cannot Build the PAR Archive! - Abort!"); |
261 | return -1; |
262 | } |
263 | } |
264 | // check for SETUP.C and execute |
265 | if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) { |
266 | printf("*******************************\n"); |
267 | printf("*** Setup PAR archive ***\n"); |
268 | cout<<pararchivename<<endl; |
269 | printf("*******************************\n"); |
270 | gROOT->Macro("PROOF-INF/SETUP.C"); |
271 | } |
272 | |
273 | gSystem->ChangeDirectory(ocwd.Data()); |
274 | printf("Current dir: %s\n", ocwd.Data()); |
275 | } |
276 | |
277 | |
278 | |
279 | void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){ |
280 | //Fills chain with data |
281 | TString ocwd = gSystem->WorkingDirectory(); |
282 | |
283 | //----------------------------------------------------------- |
284 | //Analysis of CAF data locally and with PROOF |
285 | //----------------------------------------------------------- |
286 | if(mode ==mPROOF || mode ==mLocalCAF){ |
287 | // Chain from CAF |
288 | gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C"); |
289 | // The second parameter is the number of input files in the chain |
290 | chain = CreateESDChain("ESD12001.txt", 5); |
291 | } |
292 | |
293 | //--------------------------------------- |
294 | //Local files analysis |
295 | //--------------------------------------- |
296 | else if(mode == mLocal){ |
297 | //If you want to add several ESD files sitting in a common directory INDIR |
298 | //Specify as environmental variables the directory (INDIR), the number of files |
299 | //to analyze (NEVENT) and the pattern name of the directories with files (PATTERN) |
300 | |
301 | if(gSystem->Getenv("INDIR")) |
302 | kInDir = gSystem->Getenv("INDIR") ; |
303 | else cout<<"INDIR not set, use default: "<<kInDir<<endl; |
304 | |
305 | if(gSystem->Getenv("PATTERN")) |
306 | kPattern = gSystem->Getenv("PATTERN") ; |
307 | else cout<<"PATTERN not set, use default: "<<kPattern<<endl; |
308 | |
309 | if(gSystem->Getenv("NEVENT")) |
310 | kEvent = atoi(gSystem->Getenv("NEVENT")) ; |
311 | else cout<<"NEVENT not set, use default: "<<kEvent<<endl; |
312 | |
313 | //Check if env variables are set and are correct |
314 | if ( kInDir && kEvent) { |
315 | printf("Get %d files from directory %s\n",kEvent,kInDir); |
316 | if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist |
317 | printf("%s does not exist\n", kInDir) ; |
318 | return ; |
319 | } |
320 | cout<<"INDIR : "<<kInDir<<endl; |
321 | cout<<"NEVENT : "<<kEvent<<endl; |
322 | cout<<"PATTERN: " <<kPattern<<endl; |
323 | |
324 | //Loop on ESD files, add them to chain |
325 | Int_t event =0; |
326 | Int_t skipped=0 ; |
327 | char file[120] ; |
328 | char filexs[120] ; |
329 | |
330 | for (event = 0 ; event < kEvent ; event++) { |
331 | sprintf(file, "%s/%s%d/AliESDs.root", kInDir,kPattern,event) ; |
332 | sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ; |
333 | TFile * fESD = 0 ; |
334 | //Check if file exists and add it, if not skip it |
335 | if ( fESD = TFile::Open(file)) { |
336 | if ( fESD->Get("esdTree") ) { |
337 | printf("++++ Adding %s\n", file) ; |
338 | chain->AddFile(file); |
339 | chainxs->Add(filexs) ; |
340 | } |
341 | } |
342 | else { |
343 | printf("---- Skipping %s\n", file) ; |
344 | skipped++ ; |
345 | } |
346 | } |
347 | printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped*100) ; |
348 | } |
349 | else { |
350 | TString input = "AliESDs.root" ; |
351 | cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl; |
352 | chain->AddFile(input); |
353 | } |
354 | |
355 | }// local files analysis |
356 | |
357 | //------------------------------ |
358 | //GRID xml files |
359 | //----------------------------- |
360 | else if(mode == mGRID){ |
361 | //Get colection file. It is specified by the environmental |
362 | //variable XML |
363 | |
364 | if(gSystem->Getenv("XML") ) |
365 | kXML = gSystem->Getenv("XML"); |
366 | else |
367 | sprintf(kXML, "collection.xml") ; |
368 | |
369 | if (!TFile::Open(kXML)) { |
370 | printf("No collection file with name -- %s -- was found\n",kXML); |
371 | return ; |
372 | } |
373 | else cout<<"XML file "<<kXML<<endl; |
374 | |
375 | //Load necessary libraries and connect to the GRID |
376 | gSystem->Load("libNetx.so") ; |
377 | gSystem->Load("libRAliEn.so"); |
378 | TGrid::Connect("alien://") ; |
379 | |
380 | //Feed Grid with collection file |
381 | //TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML)); |
382 | TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML); |
383 | if (! collection) { |
384 | AliError(Form("%s not found", kXML)) ; |
385 | return kFALSE ; |
386 | } |
387 | TGridResult* result = collection->GetGridResult("",0 ,0); |
388 | |
389 | // Makes the ESD chain |
390 | printf("*** Getting the Chain ***\n"); |
391 | for (Int_t index = 0; index < result->GetEntries(); index++) { |
392 | TString alienURL = result->GetKey(index, "turl") ; |
393 | cout << "================== " << alienURL << endl ; |
394 | chain->Add(alienURL) ; |
395 | alienURL.ReplaceAll("AliESDs.root",kXSFileName); |
396 | chainxs->Add(alienURL) ; |
397 | } |
398 | }// xml analysis |
399 | |
400 | gSystem->ChangeDirectory(ocwd.Data()); |
401 | } |
402 | |
403 | //________________________________________________ |
404 | void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr) |
405 | { |
406 | // Read the PYTHIA statistics from the file pyxsec.root created by |
407 | // the function WriteXsection(): |
408 | // integrated cross section (xsection) and |
409 | // the number of Pyevent() calls (ntrials) |
410 | // and calculate the weight per one event xsection/ntrials |
411 | // The spectrum calculated by a user should be |
412 | // multiplied by this weight, something like this: |
413 | // TH1F *userSpectrum ... // book and fill the spectrum |
414 | // userSpectrum->Scale(weight) |
415 | // |
416 | // Yuri Kharlov 19 June 2007 |
417 | // Gustavo Conesa 15 April 2008 |
418 | Double_t xsection = 0; |
419 | UInt_t ntrials = 0; |
420 | xs = 0; |
421 | ntr = 0; |
422 | |
423 | Int_t nfiles = tree->GetEntries() ; |
424 | if (tree && nfiles > 0) { |
425 | tree->SetBranchAddress("xsection",&xsection); |
426 | tree->SetBranchAddress("ntrials",&ntrials); |
427 | for(Int_t i = 0; i < nfiles; i++){ |
428 | tree->GetEntry(i); |
429 | xs += xsection ; |
430 | ntr += ntrials ; |
431 | cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl; |
432 | } |
433 | |
434 | xs = xs / nfiles; |
435 | ntr = ntr / nfiles; |
436 | cout << "-----------------------------------------------------------------"<<endl; |
437 | cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl; |
438 | cout << "-----------------------------------------------------------------"<<endl; |
439 | } |
440 | else cout << " >>>> Empty tree !!!! <<<<< "<<endl; |
441 | |
442 | } |
443 | |
444 | |
445 | |