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1 | /* $Id: anaGammaAnalysis.C 25095 2008-04-11 12:54:47Z schutz $ */ |
2 | /* $Log$ |
3 | /* Revision 1.2 2007/12/13 09:45:45 gustavo |
4 | /* Scaling option and more comentaries added |
5 | /* |
6 | /* Revision 1.1 2007/12/07 14:13:02 gustavo |
7 | /* Example macros for execution and configuration of the analysis |
8 | /* */ |
9 | |
10 | //--------------------------------------------------- |
11 | // Example macro to do analysis with the |
12 | // AliAnalysisTaksSE |
13 | // Can be executed with Root and AliRoot |
14 | // |
15 | // Pay attention to the options and definitions |
16 | // set in the lines below |
17 | // |
18 | // Author : Gustavo Conesa Balbastre (INFN-LNF) |
19 | // |
20 | //------------------------------------------------- |
21 | enum anaModes {mLocal, mLocalCAF,mPROOF,mGRID}; |
22 | //mLocal: Analyze locally files in your computer |
23 | //mLocalCAF: Analyze locally CAF files |
24 | //mPROOF: Analyze CAF files with PROOF |
25 | |
26 | //--------------------------------------------------------------------------- |
27 | //Settings to read locally several files, only for "mLocal" mode |
28 | //The different values are default, they can be set with environmental |
29 | //variables: INDIR, PATTERN, NEVENT, respectivelly |
30 | char * kInDir = "/user/data"; |
31 | char * kPattern = ""; // Data are in diles /data/Run0, |
32 | // /Data/Run1 ... |
33 | Int_t kEvent = 1; // Number of files |
34 | //--------------------------------------------------------------------------- |
35 | //Collection file for grid analysis |
36 | char * kXML = "collection.xml"; |
37 | //--------------------------------------------------------------------------- |
38 | //Scale histograms from file. Change to kTRUE when xsection file exists |
39 | //Put name of file containing xsection |
40 | //Put number of events per ESD file |
41 | //This is an specific case for normalization of Pythia files. |
42 | const Bool_t kGetXSectionFromFileAndScale = kFALSE ; |
43 | const char * kXSFileName = "pyxsec.root"; |
44 | const Int_t kNumberOfEventsPerFile = 100; |
45 | //--------------------------------------------------------------------------- |
46 | |
47 | const Bool_t kMC = kTRUE; //With real data kMC = kFALSE |
48 | const TString kInputData = "ESD"; |
49 | |
50 | void anaExampleTask(Int_t mode=mLocal) |
51 | { |
52 | // Main |
53 | |
54 | //-------------------------------------------------------------------- |
55 | // Load analysis libraries |
56 | // Look at the method below, |
57 | // change whatever you need for your analysis case |
58 | // ------------------------------------------------------------------ |
59 | LoadLibraries(mode) ; |
60 | |
61 | //------------------------------------------------------------------------------------------------- |
62 | //Create chain from ESD and from cross sections files, look below for options. |
63 | //------------------------------------------------------------------------------------------------- |
64 | TChain *chain = new TChain("esdTree") ; |
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 |
76 | if(kMC){ |
77 | AliMCEventHandler* mcHandler = new AliMCEventHandler(); |
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78 | mcHandler->SetReadTR(kFALSE);//Do not search TrackRef file |
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79 | mgr->SetMCtruthEventHandler(mcHandler); |
80 | } |
81 | |
82 | // AOD output handler |
83 | AliAODHandler* aodoutHandler = new AliAODHandler(); |
84 | aodoutHandler->SetOutputFileName("aod.root"); |
85 | //aodoutHandler->SetCreateNonStandardAOD(); |
86 | mgr->SetOutputEventHandler(aodoutHandler); |
87 | |
88 | //input |
89 | if(kInputData == "ESD"){ |
90 | // ESD handler |
91 | AliESDInputHandler *esdHandler = new AliESDInputHandler(); |
92 | mgr->SetInputEventHandler(esdHandler); |
93 | } |
94 | if(kInputData == "AOD"){ |
95 | // AOD handler |
96 | AliAODInputHandler *aodHandler = new AliAODInputHandler(); |
97 | mgr->SetInputEventHandler(aodHandler); |
98 | } |
99 | |
100 | //mgr->SetDebugLevel(10); // For debugging |
101 | |
102 | //------------------------------------------------------------------------- |
103 | //Define task, put here any other task that you want to use. |
104 | //------------------------------------------------------------------------- |
105 | AliAnalysisTaskPHOSExample * taskex = new AliAnalysisTaskPHOSExample ("Gamma"); |
106 | mgr->AddTask(taskex); |
107 | |
108 | // Create containers for input/output |
109 | AliAnalysisDataContainer *cinput1 = mgr->CreateContainer("cchain",TChain::Class(), |
110 | AliAnalysisManager::kInputContainer); |
111 | AliAnalysisDataContainer *coutput1 = mgr->CreateContainer("tree", TTree::Class(), |
112 | AliAnalysisManager::kOutputContainer, "default"); |
113 | AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("histos", TList::Class(), |
114 | AliAnalysisManager::kOutputContainer, "histos.root"); |
115 | |
116 | mgr->ConnectInput (taskex, 0, cinput1); |
117 | mgr->ConnectOutput (taskex, 0, coutput1 ); |
118 | mgr->ConnectOutput (taskex, 1, coutput2 ); |
119 | |
120 | //------------------------ |
121 | //Scaling task |
122 | //----------------------- |
123 | Int_t nfiles = chainxs->GetEntries(); |
124 | if(kGetXSectionFromFileAndScale && nfiles > 0){ |
125 | //Get the cross section |
126 | Double_t xsection=0; |
127 | Float_t ntrials = 0; |
128 | GetAverageXsection(chainxs, xsection, ntrials); |
129 | |
130 | AliAnaScale * scale = new AliAnaScale("scale") ; |
131 | scale->Set(xsection/ntrials/kNumberOfEventsPerFile/nfiles) ; |
132 | mgr->AddTask(scale); |
133 | |
134 | AliAnalysisDataContainer *coutput3 = mgr->CreateContainer("histosscaled", TList::Class(), |
135 | AliAnalysisManager::kOutputContainer, "gammahistosscaled.root"); |
136 | mgr->ConnectInput (scale, 0, coutput2); |
137 | mgr->ConnectOutput (scale, 0, coutput3 ); |
138 | } |
139 | |
140 | //----------------------- |
141 | // Run the analysis |
142 | //----------------------- |
143 | TString smode = ""; |
144 | if (mode==mLocal || mode == mLocalCAF) |
145 | smode = "local"; |
146 | else if (mode==mPROOF) |
147 | smode = "proof"; |
148 | else if (mode==mGRID) |
149 | smode = "grid"; |
150 | |
151 | mgr->InitAnalysis(); |
152 | mgr->PrintStatus(); |
153 | mgr->StartAnalysis(smode.Data(),chain); |
154 | } |
155 | else cout << "Chain was not produced ! "<<endl; |
156 | |
157 | } |
158 | |
159 | void LoadLibraries(const anaModes mode) { |
160 | |
161 | //-------------------------------------- |
162 | // Load the needed libraries most of them already loaded by aliroot |
163 | //-------------------------------------- |
164 | gSystem->Load("libTree.so"); |
165 | gSystem->Load("libGeom.so"); |
166 | gSystem->Load("libVMC.so"); |
167 | gSystem->Load("libXMLIO.so"); |
168 | |
169 | //---------------------------------------------------------- |
170 | // >>>>>>>>>>> Local mode <<<<<<<<<<<<<< |
171 | //---------------------------------------------------------- |
172 | if (mode==mLocal || mode == mLocalCAF || mode == mGRID) { |
173 | //-------------------------------------------------------- |
174 | // If you want to use already compiled libraries |
175 | // in the aliroot distribution |
176 | //-------------------------------------------------------- |
177 | //gSystem->Load("libSTEERBase"); |
178 | //gSystem->Load("libESD"); |
179 | //gSystem->Load("libAOD"); |
180 | //gSystem->Load("libANALYSIS"); |
181 | //gSystem->Load("libANALYSISalice"); |
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182 | //gSystem->Load("libPWG4PartCorrBase"); |
183 | //gSystem->Load("libPWG4PartCorrDep"); |
184 | |
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185 | //-------------------------------------------------------- |
186 | //If you want to use root and par files from aliroot |
187 | //-------------------------------------------------------- |
188 | SetupPar("STEERBase"); |
189 | SetupPar("ESD"); |
190 | SetupPar("AOD"); |
191 | SetupPar("ANALYSIS"); |
192 | SetupPar("ANALYSISalice"); |
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193 | SetupPar("PWG4PartCorrBase"); |
194 | SetupPar("PWG4PartCorrDep"); |
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195 | } |
196 | |
197 | //--------------------------------------------------------- |
198 | // <<<<<<<<<< PROOF mode >>>>>>>>>>>> |
199 | //--------------------------------------------------------- |
200 | else if (mode==mPROOF) { |
201 | // |
202 | // Connect to proof |
203 | // Put appropriate username here |
204 | // TProof::Reset("proof://mgheata@lxb6046.cern.ch"); |
205 | TProof::Open("proof://mgheata@lxb6046.cern.ch"); |
206 | |
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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"); |
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219 | // Enable PartCorr analysis |
220 | gProof->UploadPackage("PWG4PartCorrBase.par"); |
221 | gProof->EnablePackage("PWG4PartCorrBase"); |
222 | gProof->UploadPackage("PWG4PartCorrDep.par"); |
223 | gProof->EnablePackage("PWG4PartCorrDep"); |
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224 | // |
225 | gProof->ShowEnabledPackages(); |
226 | } |
227 | |
228 | } |
229 | |
230 | void SetupPar(char* pararchivename) |
231 | { |
232 | //Load par files, create analysis libraries |
233 | //For testing, if par file already decompressed and modified |
234 | //classes then do not decompress. |
235 | |
236 | TString cdir(Form("%s", gSystem->WorkingDirectory() )) ; |
237 | TString parpar(Form("%s.par", pararchivename)) ; |
238 | if ( gSystem->AccessPathName(parpar.Data()) ) { |
239 | gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ; |
240 | TString processline(Form(".! make %s", parpar.Data())) ; |
241 | gROOT->ProcessLine(processline.Data()) ; |
242 | gSystem->ChangeDirectory(cdir) ; |
243 | processline = Form(".! mv /tmp/%s .", parpar.Data()) ; |
244 | gROOT->ProcessLine(processline.Data()) ; |
245 | } |
246 | if ( gSystem->AccessPathName(pararchivename) ) { |
247 | TString processline = Form(".! tar xvzf %s",parpar.Data()) ; |
248 | gROOT->ProcessLine(processline.Data()); |
249 | } |
250 | |
251 | TString ocwd = gSystem->WorkingDirectory(); |
252 | gSystem->ChangeDirectory(pararchivename); |
253 | |
254 | // check for BUILD.sh and execute |
255 | if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) { |
256 | printf("*******************************\n"); |
257 | printf("*** Building PAR archive ***\n"); |
258 | cout<<pararchivename<<endl; |
259 | printf("*******************************\n"); |
260 | |
261 | if (gSystem->Exec("PROOF-INF/BUILD.sh")) { |
262 | Error("runProcess","Cannot Build the PAR Archive! - Abort!"); |
263 | return -1; |
264 | } |
265 | } |
266 | // check for SETUP.C and execute |
267 | if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) { |
268 | printf("*******************************\n"); |
269 | printf("*** Setup PAR archive ***\n"); |
270 | cout<<pararchivename<<endl; |
271 | printf("*******************************\n"); |
272 | gROOT->Macro("PROOF-INF/SETUP.C"); |
273 | } |
274 | |
275 | gSystem->ChangeDirectory(ocwd.Data()); |
276 | printf("Current dir: %s\n", ocwd.Data()); |
277 | } |
278 | |
279 | |
280 | |
281 | void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){ |
282 | //Fills chain with data |
283 | TString ocwd = gSystem->WorkingDirectory(); |
284 | |
285 | //----------------------------------------------------------- |
286 | //Analysis of CAF data locally and with PROOF |
287 | //----------------------------------------------------------- |
288 | if(mode ==mPROOF || mode ==mLocalCAF){ |
289 | // Chain from CAF |
290 | gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C"); |
291 | // The second parameter is the number of input files in the chain |
292 | chain = CreateESDChain("ESD12001.txt", 5); |
293 | } |
294 | |
295 | //--------------------------------------- |
296 | //Local files analysis |
297 | //--------------------------------------- |
298 | else if(mode == mLocal){ |
299 | //If you want to add several ESD files sitting in a common directory INDIR |
300 | //Specify as environmental variables the directory (INDIR), the number of files |
301 | //to analyze (NEVENT) and the pattern name of the directories with files (PATTERN) |
302 | |
303 | if(gSystem->Getenv("INDIR")) |
304 | kInDir = gSystem->Getenv("INDIR") ; |
305 | else cout<<"INDIR not set, use default: "<<kInDir<<endl; |
306 | |
307 | if(gSystem->Getenv("PATTERN")) |
308 | kPattern = gSystem->Getenv("PATTERN") ; |
309 | else cout<<"PATTERN not set, use default: "<<kPattern<<endl; |
310 | |
311 | if(gSystem->Getenv("NEVENT")) |
312 | kEvent = atoi(gSystem->Getenv("NEVENT")) ; |
313 | else cout<<"NEVENT not set, use default: "<<kEvent<<endl; |
314 | |
315 | //Check if env variables are set and are correct |
316 | if ( kInDir && kEvent) { |
317 | printf("Get %d files from directory %s\n",kEvent,kInDir); |
318 | if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist |
319 | printf("%s does not exist\n", kInDir) ; |
320 | return ; |
321 | } |
322 | cout<<"INDIR : "<<kInDir<<endl; |
323 | cout<<"NEVENT : "<<kEvent<<endl; |
324 | cout<<"PATTERN: " <<kPattern<<endl; |
325 | |
326 | //Loop on ESD files, add them to chain |
327 | Int_t event =0; |
328 | Int_t skipped=0 ; |
329 | char file[120] ; |
330 | char filexs[120] ; |
331 | |
332 | for (event = 0 ; event < kEvent ; event++) { |
333 | sprintf(file, "%s/%s%d/AliESDs.root", kInDir,kPattern,event) ; |
334 | sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ; |
335 | TFile * fESD = 0 ; |
336 | //Check if file exists and add it, if not skip it |
337 | if ( fESD = TFile::Open(file)) { |
338 | if ( fESD->Get("esdTree") ) { |
339 | printf("++++ Adding %s\n", file) ; |
340 | chain->AddFile(file); |
341 | chainxs->Add(filexs) ; |
342 | } |
343 | } |
344 | else { |
345 | printf("---- Skipping %s\n", file) ; |
346 | skipped++ ; |
347 | } |
348 | } |
349 | printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped*100) ; |
350 | } |
351 | else { |
352 | TString input = "AliESDs.root" ; |
353 | cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl; |
354 | chain->AddFile(input); |
355 | } |
356 | |
357 | }// local files analysis |
358 | |
359 | //------------------------------ |
360 | //GRID xml files |
361 | //----------------------------- |
362 | else if(mode == mGRID){ |
363 | //Get colection file. It is specified by the environmental |
364 | //variable XML |
365 | |
366 | if(gSystem->Getenv("XML") ) |
367 | kXML = gSystem->Getenv("XML"); |
368 | else |
369 | sprintf(kXML, "collection.xml") ; |
370 | |
371 | if (!TFile::Open(kXML)) { |
372 | printf("No collection file with name -- %s -- was found\n",kXML); |
373 | return ; |
374 | } |
375 | else cout<<"XML file "<<kXML<<endl; |
376 | |
377 | //Load necessary libraries and connect to the GRID |
378 | gSystem->Load("libNetx.so") ; |
379 | gSystem->Load("libRAliEn.so"); |
380 | TGrid::Connect("alien://") ; |
381 | |
382 | //Feed Grid with collection file |
383 | //TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML)); |
384 | TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML); |
385 | if (! collection) { |
386 | AliError(Form("%s not found", kXML)) ; |
387 | return kFALSE ; |
388 | } |
389 | TGridResult* result = collection->GetGridResult("",0 ,0); |
390 | |
391 | // Makes the ESD chain |
392 | printf("*** Getting the Chain ***\n"); |
393 | for (Int_t index = 0; index < result->GetEntries(); index++) { |
394 | TString alienURL = result->GetKey(index, "turl") ; |
395 | cout << "================== " << alienURL << endl ; |
396 | chain->Add(alienURL) ; |
397 | alienURL.ReplaceAll("AliESDs.root",kXSFileName); |
398 | chainxs->Add(alienURL) ; |
399 | } |
400 | }// xml analysis |
401 | |
402 | gSystem->ChangeDirectory(ocwd.Data()); |
403 | } |
404 | |
405 | //________________________________________________ |
406 | void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr) |
407 | { |
408 | // Read the PYTHIA statistics from the file pyxsec.root created by |
409 | // the function WriteXsection(): |
410 | // integrated cross section (xsection) and |
411 | // the number of Pyevent() calls (ntrials) |
412 | // and calculate the weight per one event xsection/ntrials |
413 | // The spectrum calculated by a user should be |
414 | // multiplied by this weight, something like this: |
415 | // TH1F *userSpectrum ... // book and fill the spectrum |
416 | // userSpectrum->Scale(weight) |
417 | // |
418 | // Yuri Kharlov 19 June 2007 |
419 | // Gustavo Conesa 15 April 2008 |
420 | Double_t xsection = 0; |
421 | UInt_t ntrials = 0; |
422 | xs = 0; |
423 | ntr = 0; |
424 | |
425 | Int_t nfiles = tree->GetEntries() ; |
426 | if (tree && nfiles > 0) { |
427 | tree->SetBranchAddress("xsection",&xsection); |
428 | tree->SetBranchAddress("ntrials",&ntrials); |
429 | for(Int_t i = 0; i < nfiles; i++){ |
430 | tree->GetEntry(i); |
431 | xs += xsection ; |
432 | ntr += ntrials ; |
433 | cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl; |
434 | } |
435 | |
436 | xs = xs / nfiles; |
437 | ntr = ntr / nfiles; |
438 | cout << "-----------------------------------------------------------------"<<endl; |
439 | cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl; |
440 | cout << "-----------------------------------------------------------------"<<endl; |
441 | } |
442 | else cout << " >>>> Empty tree !!!! <<<<< "<<endl; |
443 | |
444 | } |
445 | |
446 | |
447 | |