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1 | /* $Id$ */ |
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2 | /* $Log$ |
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3 | /* Revision 1.2 2007/12/13 09:45:45 gustavo |
4 | /* Scaling option and more comentaries added |
5 | /* |
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6 | /* Revision 1.1 2007/12/07 14:13:02 gustavo |
7 | /* Example macros for execution and configuration of the analysis |
8 | /* */ |
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9 | |
10 | //--------------------------------------------------- |
11 | // Example macro to do analysis with the |
12 | // analysis classes in PWG4Gamma |
13 | // Can be executed with Root and AliRoot |
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14 | // |
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15 | // Pay attention to the options and definitions |
16 | // set in the lines below |
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17 | // |
18 | // Author : Gustavo Conesa Balbastre (INFN-LNF) |
19 | // |
20 | //------------------------------------------------- |
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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 |
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25 | |
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26 | //--------------------------------------------------------------------------- |
27 | //Settings to read locally several files, only for "mLocal" mode |
28 | //The different values are default, they can be set with environmental |
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29 | //variables: INDIR, PATTERN, NEVENT, respectivelly |
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30 | char * kInDir = "/home/group/alice/schutz/analysis/PWG4/data"; |
31 | char * kPattern = ""; // Data are in diles /data/Run0, |
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32 | // /Data/Run1 ... |
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33 | Int_t kEvent = 1; // Number of files |
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34 | //--------------------------------------------------------------------------- |
35 | //Collection file for grid analysis |
36 | char * kXML = "collection.xml"; |
37 | //--------------------------------------------------------------------------- |
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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. |
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42 | const Bool_t kGetXSectionFromFileAndScale = kTRUE ; |
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43 | const char * kXSFileName = "pyxsec.root"; |
44 | const Int_t kNumberOfEventsPerFile = 100; |
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45 | //--------------------------------------------------------------------------- |
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46 | |
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47 | const Bool_t kMC = kTRUE; //With real data kMC = kFALSE |
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48 | |
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49 | void anaGammaAnalysis(Int_t mode=mLocal, TString configName = "ConfigKineGammaDirect") |
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50 | { |
51 | // Main |
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52 | |
53 | //-------------------------------------------------------------------- |
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54 | // Load analysis libraries |
55 | // Look at the method below, |
56 | // change whatever you need for your analysis case |
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57 | // ------------------------------------------------------------------ |
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58 | LoadLibraries(mode) ; |
59 | |
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60 | //------------------------------------------------------------------------------------------------- |
61 | //Create chain from ESD and from cross sections files, look below for options. |
62 | //------------------------------------------------------------------------------------------------- |
63 | TChain *chain = new TChain("esdTree") ; |
64 | TChain * chainxs = new TChain("Xsection") ; |
65 | CreateChain(mode, chain, chainxs); |
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66 | |
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67 | if(chain){ |
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68 | AliLog::SetGlobalLogLevel(AliLog::kError);//Minimum prints on screen |
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69 | |
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70 | //-------------------------------------- |
71 | // Make the analysis manager |
72 | //------------------------------------- |
73 | AliAnalysisManager *mgr = new AliAnalysisManager("Manager", "Manager"); |
74 | // MC handler |
75 | if(kMC){ |
76 | AliMCEventHandler* mcHandler = new AliMCEventHandler(); |
77 | mgr->SetMCtruthEventHandler(mcHandler); |
78 | } |
79 | // AOD output handler |
80 | AliAODHandler* aodHandler = new AliAODHandler(); |
81 | aodHandler->SetOutputFileName("aod.root"); |
82 | mgr->SetOutputEventHandler(aodHandler); |
83 | // ESD handler |
84 | AliESDInputHandler *esdHandler = new AliESDInputHandler(); |
85 | mgr->SetInputEventHandler(esdHandler); |
86 | |
87 | //mgr->SetDebugLevel(10); // For debugging |
88 | |
89 | //------------------------------------------------------------------------- |
90 | //Define task, put here any other task that you want to use. |
91 | //------------------------------------------------------------------------- |
92 | AliAnalysisTaskGamma * taskgamma = new AliAnalysisTaskGamma ("Gamma"); |
93 | taskgamma->SetConfigFileName(configName); //Default name is ConfigGammaAnalysis |
94 | mgr->AddTask(taskgamma); |
95 | |
96 | // Create containers for input/output |
97 | AliAnalysisDataContainer *cinput1 = mgr->CreateContainer("cchain",TChain::Class(), |
98 | AliAnalysisManager::kInputContainer); |
99 | AliAnalysisDataContainer *coutput1 = mgr->CreateContainer("tree", TTree::Class(), |
100 | AliAnalysisManager::kOutputContainer, "default"); |
101 | AliAnalysisDataContainer *coutput2 = mgr->CreateContainer("gammahistos", TList::Class(), |
102 | AliAnalysisManager::kOutputContainer, "gammahistos.root"); |
103 | |
104 | mgr->ConnectInput (taskgamma, 0, cinput1); |
105 | mgr->ConnectOutput (taskgamma, 0, coutput1 ); |
106 | mgr->ConnectOutput (taskgamma, 1, coutput2 ); |
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107 | |
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108 | //------------------------ |
109 | //Scaling task |
110 | //----------------------- |
111 | Int_t nfiles = chainxs->GetEntries(); |
112 | if(kGetXSectionFromFileAndScale && nfiles > 0){ |
113 | //Get the cross section |
114 | Double_t xsection=0; |
115 | Float_t ntrials = 0; |
116 | GetAverageXsection(chainxs, xsection, ntrials); |
117 | |
118 | AliAnaScale * scale = new AliAnaScale("scale") ; |
119 | scale->Set(xsection/ntrials/kNumberOfEventsPerFile/nfiles) ; |
120 | mgr->AddTask(scale); |
121 | |
122 | AliAnalysisDataContainer *coutput3 = mgr->CreateContainer("gammahistosscaled", TList::Class(), |
123 | AliAnalysisManager::kOutputContainer, "gammahistosscaled.root"); |
124 | mgr->ConnectInput (scale, 0, coutput2); |
125 | mgr->ConnectOutput (scale, 0, coutput3 ); |
126 | } |
127 | |
128 | //----------------------- |
129 | // Run the analysis |
130 | //----------------------- |
131 | TString smode = ""; |
132 | if (mode==mLocal || mode == mLocalCAF) |
133 | smode = "local"; |
134 | else if (mode==mPROOF) |
135 | smode = "proof"; |
136 | else if (mode==mGRID) |
137 | smode = "grid"; |
138 | |
139 | mgr->InitAnalysis(); |
140 | mgr->PrintStatus(); |
141 | mgr->StartAnalysis(smode.Data(),chain); |
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142 | } |
143 | else cout << "Chain was not produced ! "<<endl; |
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144 | |
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145 | } |
146 | |
147 | void LoadLibraries(const anaModes mode) { |
148 | |
149 | //-------------------------------------- |
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150 | // Load the needed libraries most of them already loaded by aliroot |
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151 | //-------------------------------------- |
152 | gSystem->Load("libTree.so"); |
153 | gSystem->Load("libGeom.so"); |
154 | gSystem->Load("libVMC.so"); |
155 | gSystem->Load("libXMLIO.so"); |
156 | |
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157 | //---------------------------------------------------------- |
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158 | // >>>>>>>>>>> Local mode <<<<<<<<<<<<<< |
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159 | //---------------------------------------------------------- |
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160 | if (mode==mLocal || mode == mLocalCAF || mode == mGRID) { |
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161 | //-------------------------------------------------------- |
162 | // If you want to use already compiled libraries |
163 | // in the aliroot distribution |
164 | //-------------------------------------------------------- |
165 | //gSystem->Load("libSTEERBase"); |
166 | //gSystem->Load("libESD"); |
167 | //gSystem->Load("libAOD"); |
168 | //gSystem->Load("libANALYSIS"); |
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169 | //gSystem->Load("libANALYSISalice"); |
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170 | //gSystem->Load("libPWG4Gamma"); |
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171 | |
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172 | //-------------------------------------------------------- |
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173 | //If you want to use root and par files from aliroot |
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174 | //-------------------------------------------------------- |
175 | SetupPar("STEERBase"); |
176 | SetupPar("ESD"); |
177 | SetupPar("AOD"); |
178 | SetupPar("ANALYSIS"); |
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179 | SetupPar("ANALYSISalice"); |
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180 | SetupPar("PWG4Gamma"); |
181 | |
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182 | } |
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183 | |
184 | //--------------------------------------------------------- |
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185 | // <<<<<<<<<< PROOF mode >>>>>>>>>>>> |
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186 | //--------------------------------------------------------- |
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187 | else if (mode==mPROOF) { |
188 | // |
189 | // Connect to proof |
190 | // Put appropriate username here |
191 | // TProof::Reset("proof://mgheata@lxb6046.cern.ch"); |
192 | TProof::Open("proof://mgheata@lxb6046.cern.ch"); |
193 | |
194 | // gProof->ClearPackages(); |
195 | // gProof->ClearPackage("ESD"); |
196 | // gProof->ClearPackage("AOD"); |
197 | // gProof->ClearPackage("ANALYSIS"); |
198 | // gProof->ClearPackage("PWG4Gamma"); |
199 | |
200 | // Enable the STEERBase Package |
201 | gProof->UploadPackage("STEERBase.par"); |
202 | gProof->EnablePackage("STEERBase"); |
203 | // Enable the ESD Package |
204 | gProof->UploadPackage("ESD.par"); |
205 | gProof->EnablePackage("ESD"); |
206 | // Enable the AOD Package |
207 | gProof->UploadPackage("AOD.par"); |
208 | gProof->EnablePackage("AOD"); |
209 | // Enable the Analysis Package |
210 | gProof->UploadPackage("ANALYSIS.par"); |
211 | gProof->EnablePackage("ANALYSIS"); |
212 | // Enable gamma jet analysis |
213 | gProof->UploadPackage("PWG4Gamma.par"); |
214 | gProof->EnablePackage("PWG4Gamma"); |
215 | // |
216 | gProof->ShowEnabledPackages(); |
217 | } |
218 | |
219 | } |
220 | |
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221 | void SetupPar(char* pararchivename) |
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222 | { |
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223 | //Load par files, create analysis libraries |
224 | //For testing, if par file already decompressed and modified |
225 | //classes then do not decompress. |
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226 | |
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227 | TString cdir(Form("%s", gSystem->WorkingDirectory() )) ; |
228 | TString parpar(Form("%s.par", pararchivename)) ; |
229 | if ( gSystem->AccessPathName(parpar.Data()) ) { |
230 | gSystem->ChangeDirectory(gSystem->Getenv("ALICE_ROOT")) ; |
231 | TString processline(Form(".! make %s", parpar.Data())) ; |
232 | gROOT->ProcessLine(processline.Data()) ; |
233 | gSystem->ChangeDirectory(cdir) ; |
234 | processline = Form(".! mv /tmp/%s .", parpar.Data()) ; |
235 | gROOT->ProcessLine(processline.Data()) ; |
236 | } |
237 | if ( gSystem->AccessPathName(pararchivename) ) { |
238 | TString processline = Form(".! tar xvzf %s",parpar.Data()) ; |
239 | gROOT->ProcessLine(processline.Data()); |
240 | } |
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241 | |
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242 | TString ocwd = gSystem->WorkingDirectory(); |
243 | gSystem->ChangeDirectory(pararchivename); |
244 | |
245 | // check for BUILD.sh and execute |
246 | if (!gSystem->AccessPathName("PROOF-INF/BUILD.sh")) { |
247 | printf("*******************************\n"); |
248 | printf("*** Building PAR archive ***\n"); |
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249 | cout<<pararchivename<<endl; |
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250 | printf("*******************************\n"); |
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251 | |
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252 | if (gSystem->Exec("PROOF-INF/BUILD.sh")) { |
253 | Error("runProcess","Cannot Build the PAR Archive! - Abort!"); |
254 | return -1; |
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255 | } |
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256 | } |
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257 | // check for SETUP.C and execute |
258 | if (!gSystem->AccessPathName("PROOF-INF/SETUP.C")) { |
259 | printf("*******************************\n"); |
260 | printf("*** Setup PAR archive ***\n"); |
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261 | cout<<pararchivename<<endl; |
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262 | printf("*******************************\n"); |
263 | gROOT->Macro("PROOF-INF/SETUP.C"); |
264 | } |
265 | |
266 | gSystem->ChangeDirectory(ocwd.Data()); |
267 | printf("Current dir: %s\n", ocwd.Data()); |
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268 | } |
269 | |
270 | |
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271 | |
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272 | void CreateChain(const anaModes mode, TChain * chain, TChain * chainxs){ |
273 | //Fills chain with data |
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274 | TString ocwd = gSystem->WorkingDirectory(); |
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275 | |
276 | //----------------------------------------------------------- |
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277 | //Analysis of CAF data locally and with PROOF |
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278 | //----------------------------------------------------------- |
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279 | if(mode ==mPROOF || mode ==mLocalCAF){ |
280 | // Chain from CAF |
281 | gROOT->LoadMacro("$ALICE_ROOT/PWG0/CreateESDChain.C"); |
282 | // The second parameter is the number of input files in the chain |
283 | chain = CreateESDChain("ESD12001.txt", 5); |
284 | } |
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285 | |
286 | //--------------------------------------- |
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287 | //Local files analysis |
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288 | //--------------------------------------- |
289 | else if(mode == mLocal){ |
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290 | //If you want to add several ESD files sitting in a common directory INDIR |
291 | //Specify as environmental variables the directory (INDIR), the number of files |
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292 | //to analyze (NEVENT) and the pattern name of the directories with files (PATTERN) |
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293 | |
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294 | if(gSystem->Getenv("INDIR")) |
295 | kInDir = gSystem->Getenv("INDIR") ; |
296 | else cout<<"INDIR not set, use default: "<<kInDir<<endl; |
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297 | |
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298 | if(gSystem->Getenv("PATTERN")) |
299 | kPattern = gSystem->Getenv("PATTERN") ; |
300 | else cout<<"PATTERN not set, use default: "<<kPattern<<endl; |
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301 | |
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302 | if(gSystem->Getenv("NEVENT")) |
303 | kEvent = atoi(gSystem->Getenv("NEVENT")) ; |
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304 | else cout<<"NEVENT not set, use default: "<<kEvent<<endl; |
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305 | |
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306 | //Check if env variables are set and are correct |
307 | if ( kInDir && kEvent) { |
308 | printf("Get %d files from directory %s\n",kEvent,kInDir); |
309 | if ( ! gSystem->cd(kInDir) ) {//check if ESDs directory exist |
310 | printf("%s does not exist\n", kInDir) ; |
311 | return ; |
312 | } |
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313 | cout<<"INDIR : "<<kInDir<<endl; |
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314 | cout<<"NEVENT : "<<kEvent<<endl; |
315 | cout<<"PATTERN: " <<kPattern<<endl; |
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316 | |
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317 | //Loop on ESD files, add them to chain |
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318 | Int_t event =0; |
319 | Int_t skipped=0 ; |
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320 | char file[120] ; |
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321 | char filexs[120] ; |
322 | |
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323 | for (event = 0 ; event < kEvent ; event++) { |
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324 | sprintf(file, "%s/%s%d/AliESDs.root", kInDir,kPattern,event) ; |
325 | sprintf(filexs, "%s/%s%d/%s", kInDir,kPattern,event,kXSFileName) ; |
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326 | TFile * fESD = 0 ; |
327 | //Check if file exists and add it, if not skip it |
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328 | if ( fESD = TFile::Open(file)) { |
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329 | if ( fESD->Get("esdTree") ) { |
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330 | printf("++++ Adding %s\n", file) ; |
331 | chain->AddFile(file); |
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332 | chainxs->Add(filexs) ; |
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333 | } |
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334 | } |
335 | else { |
336 | printf("---- Skipping %s\n", file) ; |
337 | skipped++ ; |
338 | } |
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339 | } |
340 | printf("number of entries # %lld, skipped %d\n", chain->GetEntries(), skipped*100) ; |
341 | } |
342 | else { |
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343 | TString input = "AliESDs.root" ; |
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344 | cout<<">>>>>> No list added, take a single file <<<<<<<<< "<<input<<endl; |
345 | chain->AddFile(input); |
346 | } |
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347 | |
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348 | }// local files analysis |
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349 | |
350 | //------------------------------ |
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351 | //GRID xml files |
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352 | //----------------------------- |
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353 | else if(mode == mGRID){ |
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354 | //Get colection file. It is specified by the environmental |
355 | //variable XML |
356 | |
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357 | if(gSystem->Getenv("XML") ) |
358 | kXML = gSystem->Getenv("XML"); |
359 | else |
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360 | sprintf(kXML, "collection.xml") ; |
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361 | |
362 | if (!TFile::Open(kXML)) { |
363 | printf("No collection file with name -- %s -- was found\n",kXML); |
364 | return ; |
365 | } |
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366 | else cout<<"XML file "<<kXML<<endl; |
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367 | |
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368 | //Load necessary libraries and connect to the GRID |
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369 | gSystem->Load("libNetx.so") ; |
370 | gSystem->Load("libRAliEn.so"); |
371 | TGrid::Connect("alien://") ; |
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372 | |
373 | //Feed Grid with collection file |
374 | //TGridCollection * collection = (TGridCollection*)gROOT->ProcessLine(Form("TAlienCollection::Open(\"%s\", 0)", kXML)); |
375 | TGridCollection * collection = (TGridCollection*) TAlienCollection::Open(kXML); |
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376 | if (! collection) { |
377 | AliError(Form("%s not found", kXML)) ; |
378 | return kFALSE ; |
379 | } |
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380 | TGridResult* result = collection->GetGridResult("",0 ,0); |
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381 | |
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382 | // Makes the ESD chain |
383 | printf("*** Getting the Chain ***\n"); |
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384 | for (Int_t index = 0; index < result->GetEntries(); index++) { |
385 | TString alienURL = result->GetKey(index, "turl") ; |
386 | cout << "================== " << alienURL << endl ; |
387 | chain->Add(alienURL) ; |
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388 | alienURL.ReplaceAll("AliESDs.root",kXSFileName); |
389 | chainxs->Add(alienURL) ; |
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390 | } |
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391 | }// xml analysis |
392 | |
393 | gSystem->ChangeDirectory(ocwd.Data()); |
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394 | } |
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395 | |
396 | //________________________________________________ |
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397 | void GetAverageXsection(TTree * tree, Double_t & xs, Float_t & ntr) |
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398 | { |
399 | // Read the PYTHIA statistics from the file pyxsec.root created by |
400 | // the function WriteXsection(): |
401 | // integrated cross section (xsection) and |
402 | // the number of Pyevent() calls (ntrials) |
403 | // and calculate the weight per one event xsection/ntrials |
404 | // The spectrum calculated by a user should be |
405 | // multiplied by this weight, something like this: |
406 | // TH1F *userSpectrum ... // book and fill the spectrum |
407 | // userSpectrum->Scale(weight) |
408 | // |
409 | // Yuri Kharlov 19 June 2007 |
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410 | // Gustavo Conesa 15 April 2008 |
411 | Double_t xsection = 0; |
412 | UInt_t ntrials = 0; |
413 | xs = 0; |
414 | ntr = 0; |
415 | |
416 | Int_t nfiles = tree->GetEntries() ; |
417 | if (tree && nfiles > 0) { |
418 | tree->SetBranchAddress("xsection",&xsection); |
419 | tree->SetBranchAddress("ntrials",&ntrials); |
420 | for(Int_t i = 0; i < nfiles; i++){ |
421 | tree->GetEntry(i); |
422 | xs += xsection ; |
423 | ntr += ntrials ; |
424 | cout << "xsection " <<xsection<<" ntrials "<<ntrials<<endl; |
425 | } |
426 | |
427 | xs = xs / nfiles; |
428 | ntr = ntr / nfiles; |
429 | cout << "-----------------------------------------------------------------"<<endl; |
430 | cout << "Average of "<< nfiles<<" files: xsection " <<xs<<" ntrials "<<ntr<<endl; |
431 | cout << "-----------------------------------------------------------------"<<endl; |
432 | } |
433 | else cout << " >>>> Empty tree !!!! <<<<< "<<endl; |
434 | |
435 | } |
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436 | |
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437 | |
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438 | |