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924fafb7 | 1 | /************************************************************************* |
2 | * Copyright(c) 1998-2008, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
2188af53 | 16 | /************************************** |
17 | * analysis task for cumulant method * | |
18 | * * | |
19 | * authors: Naomi van der Kolk * | |
20 | * (kolk@nikhef.nl) * | |
21 | * Raimond Snellings * | |
22 | * (snelling@nikhef.nl) * | |
23 | * Ante Bilandzic * | |
24 | * (anteb@nikhef.nl) * | |
25 | * ***********************************/ | |
26 | ||
27 | #include "Riostream.h" | |
924fafb7 | 28 | #include "TChain.h" |
29 | #include "TTree.h" | |
30 | #include "TFile.h" | |
aaebd73d | 31 | #include "TList.h" |
32 | #include "TH1.h" | |
aaebd73d | 33 | #include "TProfile.h" |
34 | #include "TProfile2D.h" | |
35 | #include "TProfile3D.h" | |
924fafb7 | 36 | |
aaebd73d | 37 | #include "AliAnalysisTask.h" |
38 | #include "AliAnalysisDataSlot.h" | |
39 | #include "AliAnalysisDataContainer.h" | |
924fafb7 | 40 | #include "AliAnalysisManager.h" |
41 | ||
42 | #include "AliESDEvent.h" | |
43 | #include "AliESDInputHandler.h" | |
44 | ||
45 | #include "AliAODEvent.h" | |
46 | #include "AliAODInputHandler.h" | |
47 | ||
48 | #include "AliMCEventHandler.h" | |
49 | #include "AliMCEvent.h" | |
50 | ||
aaebd73d | 51 | #include "../../CORRFW/AliCFManager.h" |
52 | ||
924fafb7 | 53 | #include "AliAnalysisTaskCumulants.h" |
54 | #include "AliFlowEventSimpleMaker.h" | |
55 | #include "AliFlowAnalysisWithCumulants.h" | |
aaebd73d | 56 | #include "AliFlowCumuConstants.h" |
57 | #include "AliFlowCommonConstants.h" | |
58 | #include "AliFlowCommonHistResults.h" | |
aaebd73d | 59 | #include "AliCumulantsFunctions.h" |
924fafb7 | 60 | |
924fafb7 | 61 | ClassImp(AliAnalysisTaskCumulants) |
62 | ||
2188af53 | 63 | //================================================================================================================ |
64 | ||
6d4fa5d3 | 65 | AliAnalysisTaskCumulants::AliAnalysisTaskCumulants(const char *name, Bool_t on): |
2188af53 | 66 | AliAnalysisTask(name,""), |
67 | fESD(NULL), | |
68 | fAOD(NULL), | |
52021ae2 | 69 | fGFC(NULL),//Generating Function Cumulant (GFC) analysis object |
2188af53 | 70 | fEventMaker(NULL), |
71 | fAnalysisType("ESD"), | |
72 | fCFManager1(NULL), | |
73 | fCFManager2(NULL), | |
6d4fa5d3 | 74 | fListHistos(NULL), |
75 | fQAInt(NULL), | |
76 | fQADiff(NULL), | |
77 | fQA(on) | |
924fafb7 | 78 | { |
fe488c8a | 79 | //constructor |
52021ae2 | 80 | cout<<"AliAnalysisTaskCumulants::AliAnalysisTaskCumulants(const char *name)"<<endl; |
fe488c8a | 81 | |
82 | // Define input and output slots here | |
83 | // Input slot #0 works with a TChain | |
2188af53 | 84 | DefineInput(0, TChain::Class()); |
fe488c8a | 85 | |
86 | // Output slot #0 writes into a TList container | |
2188af53 | 87 | DefineOutput(0, TList::Class()); |
fe488c8a | 88 | if(on) |
89 | { | |
90 | DefineOutput(1, TList::Class()); | |
91 | DefineOutput(2, TList::Class()); | |
92 | } | |
924fafb7 | 93 | } |
2188af53 | 94 | |
95 | AliAnalysisTaskCumulants::AliAnalysisTaskCumulants(): | |
96 | fESD(NULL), | |
97 | fAOD(NULL), | |
52021ae2 | 98 | fGFC(NULL),//Generating Function Cumulant (GFC) analysis object |
2188af53 | 99 | fEventMaker(NULL), |
100 | fAnalysisType("ESD"), | |
101 | fCFManager1(NULL), | |
102 | fCFManager2(NULL), | |
6d4fa5d3 | 103 | fListHistos(NULL), |
104 | fQAInt(NULL), | |
105 | fQADiff(NULL), | |
106 | fQA(kFALSE) | |
aaebd73d | 107 | { |
2188af53 | 108 | //dummy constructor |
109 | cout<<"AliAnalysisTaskCumulants::AliAnalysisTaskCumulants()"<<endl; | |
110 | } | |
111 | ||
112 | //================================================================================================================ | |
924fafb7 | 113 | |
924fafb7 | 114 | void AliAnalysisTaskCumulants::ConnectInputData(Option_t *) |
115 | { | |
2188af53 | 116 | //connect ESD or AOD (called once) |
117 | cout<<"AliAnalysisTaskCumulants::ConnectInputData(Option_t *)"<<endl; | |
118 | ||
119 | TTree* tree = dynamic_cast<TTree*> (GetInputData(0)); | |
120 | if (!tree) | |
121 | { | |
122 | Printf("ERROR: Could not read chain from input slot 0"); | |
123 | } | |
124 | else | |
125 | { | |
126 | //disable all branches and enable only the needed ones | |
127 | if (fAnalysisType == "MC") { | |
128 | // we want to process only MC | |
924fafb7 | 129 | tree->SetBranchStatus("*", kFALSE); |
130 | ||
131 | AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()); | |
132 | ||
133 | if (!esdH) { | |
134 | Printf("ERROR: Could not get ESDInputHandler"); | |
135 | } else { | |
136 | fESD = esdH->GetEvent(); | |
137 | } | |
138 | } | |
139 | else if (fAnalysisType == "ESD" || fAnalysisType == "ESDMC0" || fAnalysisType == "ESDMC1" ) { | |
140 | tree->SetBranchStatus("*", kFALSE); | |
141 | tree->SetBranchStatus("Tracks.*", kTRUE); | |
142 | ||
143 | AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()); | |
144 | ||
145 | if (!esdH) { | |
146 | Printf("ERROR: Could not get ESDInputHandler"); | |
147 | } else | |
148 | fESD = esdH->GetEvent(); | |
149 | } | |
150 | else if (fAnalysisType == "AOD") { | |
151 | AliAODInputHandler *aodH = dynamic_cast<AliAODInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()); | |
152 | ||
153 | if (!aodH) { | |
154 | Printf("ERROR: Could not get AODInputHandler"); | |
155 | } | |
156 | else { | |
157 | fAOD = aodH->GetEvent(); | |
158 | } | |
159 | } | |
160 | else { | |
161 | Printf("Wrong analysis type: Only ESD, ESDMC0, ESDMC1, AOD and MC types are allowed!"); | |
162 | ||
163 | } | |
164 | } | |
165 | } | |
166 | ||
2188af53 | 167 | //================================================================================================================ |
168 | ||
924fafb7 | 169 | void AliAnalysisTaskCumulants::CreateOutputObjects() |
170 | { | |
2188af53 | 171 | //called at every worker node to initialize |
172 | cout<<"AliAnalysisTaskCumulants::CreateOutputObjects()"<<endl; | |
924fafb7 | 173 | |
aaebd73d | 174 | |
2188af53 | 175 | //OpenFile(0); |
176 | ||
177 | ||
178 | if(!(fAnalysisType == "AOD" || fAnalysisType == "ESD" || fAnalysisType == "ESDMC0" || fAnalysisType == "ESDMC1" || fAnalysisType == "MC")) | |
179 | { | |
180 | cout<<"WRONG ANALYSIS TYPE! only ESD, ESDMC0, ESDMC1, AOD and MC are allowed."<<endl; | |
181 | exit(1); | |
182 | } | |
183 | ||
184 | //event maker | |
185 | fEventMaker = new AliFlowEventSimpleMaker(); | |
186 | ||
187 | //analyser | |
52021ae2 | 188 | fGFC = new AliFlowAnalysisWithCumulants(); |
189 | fGFC->CreateOutputObjects(); | |
2188af53 | 190 | |
52021ae2 | 191 | if(fGFC->GetHistList()) |
2188af53 | 192 | { |
52021ae2 | 193 | fListHistos = fGFC->GetHistList(); |
2188af53 | 194 | //fListHistos->Print(); |
aaebd73d | 195 | } |
2188af53 | 196 | else |
197 | { | |
198 | Printf("ERROR: Could not retrieve histogram list"); | |
199 | } | |
2188af53 | 200 | } |
201 | ||
202 | //================================================================================================================ | |
924fafb7 | 203 | |
924fafb7 | 204 | void AliAnalysisTaskCumulants::Exec(Option_t *) |
205 | { | |
2188af53 | 206 | //main loop (called for each event) |
207 | if (fAnalysisType == "MC") { | |
924fafb7 | 208 | // Process MC truth, therefore we receive the AliAnalysisManager and ask it for the AliMCEventHandler |
209 | // This handler can return the current MC event | |
210 | ||
211 | AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler()); | |
212 | if (!eventHandler) { | |
213 | Printf("ERROR: Could not retrieve MC event handler"); | |
214 | return; | |
215 | } | |
216 | ||
217 | AliMCEvent* mcEvent = eventHandler->MCEvent(); | |
218 | if (!mcEvent) { | |
219 | Printf("ERROR: Could not retrieve MC event"); | |
220 | return; | |
221 | } | |
222 | ||
a58fb92e | 223 | |
aaebd73d | 224 | fCFManager1->SetEventInfo(mcEvent); |
225 | fCFManager2->SetEventInfo(mcEvent); | |
924fafb7 | 226 | |
a58fb92e | 227 | Printf("MC particles: %d", mcEvent->GetNumberOfTracks()); |
228 | ||
aaebd73d | 229 | //cumulant analysis |
230 | AliFlowEventSimple* fEvent = fEventMaker->FillTracks(mcEvent,fCFManager1,fCFManager2); | |
52021ae2 | 231 | fGFC->Make(fEvent); |
924fafb7 | 232 | delete fEvent; |
233 | } | |
234 | else if (fAnalysisType == "ESD") { | |
235 | if (!fESD) { | |
236 | Printf("ERROR: fESD not available"); | |
237 | return; | |
238 | } | |
239 | Printf("There are %d tracks in this event", fESD->GetNumberOfTracks()); | |
240 | ||
2188af53 | 241 | //cumulant analysis |
fe488c8a | 242 | AliFlowEventSimple* fEvent = fEventMaker->FillTracks(fESD,fCFManager1,fCFManager2); |
52021ae2 | 243 | fGFC->Make(fEvent); |
924fafb7 | 244 | delete fEvent; |
245 | } | |
246 | else if (fAnalysisType == "ESDMC0") { | |
247 | if (!fESD) { | |
248 | Printf("ERROR: fESD not available"); | |
249 | return; | |
250 | } | |
251 | Printf("There are %d tracks in this event", fESD->GetNumberOfTracks()); | |
252 | ||
253 | AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler()); | |
254 | if (!eventHandler) { | |
255 | Printf("ERROR: Could not retrieve MC event handler"); | |
256 | return; | |
257 | } | |
258 | ||
259 | AliMCEvent* mcEvent = eventHandler->MCEvent(); | |
260 | if (!mcEvent) { | |
261 | Printf("ERROR: Could not retrieve MC event"); | |
262 | return; | |
263 | } | |
264 | ||
aaebd73d | 265 | fCFManager1->SetEventInfo(mcEvent); |
266 | fCFManager2->SetEventInfo(mcEvent); | |
924fafb7 | 267 | |
2188af53 | 268 | //cumulant analysis |
aaebd73d | 269 | AliFlowEventSimple* fEvent=NULL; |
270 | if (fAnalysisType == "ESDMC0") { | |
271 | fEvent = fEventMaker->FillTracks(fESD, mcEvent, fCFManager1, fCFManager2, 0); //0 = kine from ESD, 1 = kine from MC | |
272 | } else if (fAnalysisType == "ESDMC1") { | |
273 | fEvent = fEventMaker->FillTracks(fESD, mcEvent, fCFManager1, fCFManager2, 1); //0 = kine from ESD, 1 = kine from MC | |
274 | } | |
52021ae2 | 275 | fGFC->Make(fEvent); |
924fafb7 | 276 | delete fEvent; |
277 | //delete mcEvent; | |
278 | } | |
aaebd73d | 279 | |
924fafb7 | 280 | else if (fAnalysisType == "AOD") { |
281 | if (!fAOD) { | |
282 | Printf("ERROR: fAOD not available"); | |
283 | return; | |
284 | } | |
285 | Printf("There are %d tracks in this event", fAOD->GetNumberOfTracks()); | |
286 | ||
aaebd73d | 287 | // analysis |
288 | //For the moment don't use CF //AliFlowEventSimple* fEvent = fEventMaker->FillTracks(fAOD,fCFManager1,fCFManager2); | |
924fafb7 | 289 | AliFlowEventSimple* fEvent = fEventMaker->FillTracks(fAOD); |
52021ae2 | 290 | fGFC->Make(fEvent); |
924fafb7 | 291 | delete fEvent; |
292 | } | |
aaebd73d | 293 | |
294 | ||
295 | PostData(0,fListHistos); | |
6d4fa5d3 | 296 | if(fQA) |
297 | { | |
298 | PostData(1,fQAInt); | |
299 | PostData(2,fQADiff); | |
300 | } | |
924fafb7 | 301 | } |
302 | ||
2188af53 | 303 | //================================================================================================================ |
304 | ||
924fafb7 | 305 | void AliAnalysisTaskCumulants::Terminate(Option_t *) |
aaebd73d | 306 | { |
2188af53 | 307 | //accessing the output list which contains the merged 2D and 3D profiles from all worker nodes |
308 | fListHistos = (TList*)GetOutputData(0); | |
309 | //fListHistos->Print(); | |
310 | ||
311 | if(fListHistos) | |
52021ae2 | 312 | { |
313 | //histograms to store the final results | |
314 | TH1D *intFlowResults = dynamic_cast<TH1D*>(fListHistos->FindObject("fIntFlowResultsGFC")); | |
315 | TH1D *diffFlowResults2 = dynamic_cast<TH1D*>(fListHistos->FindObject("fDiffFlowResults2ndOrderGFC")); | |
316 | TH1D *diffFlowResults4 = dynamic_cast<TH1D*>(fListHistos->FindObject("fDiffFlowResults4thOrderGFC")); | |
317 | TH1D *diffFlowResults6 = dynamic_cast<TH1D*>(fListHistos->FindObject("fDiffFlowResults6thOrderGFC")); | |
318 | TH1D *diffFlowResults8 = dynamic_cast<TH1D*>(fListHistos->FindObject("fDiffFlowResults8thOrderGFC")); | |
319 | ||
320 | //common histograms to store the final results the integrated and differential flow | |
321 | AliFlowCommonHistResults *commonHistRes2nd = dynamic_cast<AliFlowCommonHistResults*>(fListHistos->FindObject("AliFlowCommonHistResults2ndOrderGFC")); | |
322 | AliFlowCommonHistResults *commonHistRes4th = dynamic_cast<AliFlowCommonHistResults*>(fListHistos->FindObject("AliFlowCommonHistResults4thOrderGFC")); | |
323 | AliFlowCommonHistResults *commonHistRes6th = dynamic_cast<AliFlowCommonHistResults*>(fListHistos->FindObject("AliFlowCommonHistResults6thOrderGFC")); | |
324 | AliFlowCommonHistResults *commonHistRes8th = dynamic_cast<AliFlowCommonHistResults*>(fListHistos->FindObject("AliFlowCommonHistResults8thOrderGFC")); | |
325 | ||
326 | //profiles with average values of generating functions for int. and diff. flow | |
327 | TProfile2D *intFlowGenFun = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fIntFlowGenFun")); | |
328 | TProfile3D *diffFlowGenFunRe = dynamic_cast<TProfile3D*>(fListHistos->FindObject("fDiffFlowGenFunRe")); | |
329 | TProfile3D *diffFlowGenFunIm = dynamic_cast<TProfile3D*>(fListHistos->FindObject("fDiffFlowGenFunIm")); | |
330 | ||
331 | //number of particles per pt bin | |
332 | TProfile *BinNoOfParticles = dynamic_cast<TProfile*>(fListHistos->FindObject("fBinNoOfParticles")); | |
333 | ||
334 | //average selected multiplicity (for int. flow) | |
335 | TProfile *AvMult = dynamic_cast<TProfile*>(fListHistos->FindObject("fAvMultIntFlowGFC")); | |
336 | ||
337 | //average values of Q-vector components (1st bin: <Q_x>, 2nd bin: <Q_y>, 3rd bin: <(Q_x)^2>, 4th bin: <(Q_y)^2>) | |
338 | TProfile *QVectorComponents = dynamic_cast<TProfile*>(fListHistos->FindObject("fQVectorComponentsGFC")); | |
aaebd73d | 339 | |
52021ae2 | 340 | /* |
2188af53 | 341 | TProfile2D *diffFlowGenFunRe0 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunRe0")); |
342 | TProfile2D *diffFlowGenFunRe1 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunRe1")); | |
343 | TProfile2D *diffFlowGenFunRe2 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunRe2")); | |
344 | TProfile2D *diffFlowGenFunRe3 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunRe3")); | |
345 | TProfile2D *diffFlowGenFunRe4 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunRe4")); | |
346 | TProfile2D *diffFlowGenFunRe5 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunRe5")); | |
347 | TProfile2D *diffFlowGenFunRe6 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunRe6")); | |
348 | TProfile2D *diffFlowGenFunRe7 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunRe7")); | |
349 | TProfile2D *diffFlowGenFunIm0 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunIm0")); | |
350 | TProfile2D *diffFlowGenFunIm1 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunIm1")); | |
351 | TProfile2D *diffFlowGenFunIm2 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunIm2")); | |
352 | TProfile2D *diffFlowGenFunIm3 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunIm3")); | |
353 | TProfile2D *diffFlowGenFunIm4 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunIm4")); | |
354 | TProfile2D *diffFlowGenFunIm5 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunIm5")); | |
355 | TProfile2D *diffFlowGenFunIm6 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunIm6")); | |
356 | TProfile2D *diffFlowGenFunIm7 = dynamic_cast<TProfile2D*>(fListHistos->FindObject("fDiffFlowGenFunIm7")); | |
52021ae2 | 357 | */ |
2188af53 | 358 | |
359 | //profile with avarage selected multiplicity for int. flow | |
52021ae2 | 360 | //TProfile *avMult = dynamic_cast<TProfile*>(fListHistos->FindObject("fAvMultIntFlow")); |
2188af53 | 361 | |
362 | //profile with avarage values of Q-vector components (1st bin: <Q_x>, 2nd bin: <Q_y>, 3rd bin: <(Q_x)^2>, 4th bin: <(Q_y)^2>) | |
52021ae2 | 363 | //TProfile *QVectorComponents = dynamic_cast<TProfile*>(fListHistos->FindObject("fQVectorComponents")); |
2188af53 | 364 | |
365 | //q-distribution | |
52021ae2 | 366 | //TH1D *qDist = dynamic_cast<TH1D*>(fListHistos->FindObject("fQDist")); |
2188af53 | 367 | |
52021ae2 | 368 | //AliCumulantsFunctions finalResults(intFlowGenFun,NULL,NULL, intFlowResults,diffFlowResults2,diffFlowResults4,diffFlowResults6,diffFlowResults8,avMult,QVectorComponents,qDist,diffFlowGenFunRe0,diffFlowGenFunRe1,diffFlowGenFunRe2, diffFlowGenFunRe3,diffFlowGenFunRe4,diffFlowGenFunRe5,diffFlowGenFunRe6,diffFlowGenFunRe7,diffFlowGenFunIm0,diffFlowGenFunIm1, diffFlowGenFunIm2,diffFlowGenFunIm3,diffFlowGenFunIm4,diffFlowGenFunIm5,diffFlowGenFunIm6,diffFlowGenFunIm7); |
369 | ||
370 | //AliCumulantsFunctions finalResults(intFlowGenFun,diffFlowGenFunRe,diffFlowGenFunIm, intFlowResults,diffFlowResults2,diffFlowResults4,diffFlowResults6,diffFlowResults8,avMult,QVectorComponents,qDist); | |
2188af53 | 371 | |
52021ae2 | 372 | //finalResults.Calculate(); |
373 | ||
374 | ||
375 | ||
376 | //---------------------------------------------------- | |
377 | ||
378 | fGFC = new AliFlowAnalysisWithCumulants(); | |
2188af53 | 379 | |
52021ae2 | 380 | fGFC->SetIntFlowResults(intFlowResults); |
381 | fGFC->SetDiffFlowResults2nd(diffFlowResults2); | |
382 | fGFC->SetDiffFlowResults4th(diffFlowResults4); | |
383 | fGFC->SetDiffFlowResults6th(diffFlowResults6); | |
384 | fGFC->SetDiffFlowResults8th(diffFlowResults8); | |
385 | ||
386 | fGFC->SetCommonHistsResults2nd(commonHistRes2nd); | |
387 | fGFC->SetCommonHistsResults4th(commonHistRes4th); | |
388 | fGFC->SetCommonHistsResults6th(commonHistRes6th); | |
389 | fGFC->SetCommonHistsResults8th(commonHistRes8th); | |
390 | ||
391 | fGFC->SetIntFlowGenFun(intFlowGenFun); | |
392 | fGFC->SetDiffFlowGenFunRe(diffFlowGenFunRe); | |
393 | fGFC->SetDiffFlowGenFunIm(diffFlowGenFunIm); | |
394 | ||
395 | fGFC->SetNumberOfParticlesPerPtBin(BinNoOfParticles); | |
396 | ||
397 | fGFC->SetAverageMultiplicity(AvMult); | |
398 | fGFC->SetQVectorComponents(QVectorComponents); | |
399 | ||
400 | fGFC->Finish(); | |
401 | ||
402 | //---------------------------------------------------- | |
2188af53 | 403 | } |
404 | else | |
405 | { | |
406 | cout<<"histogram list pointer is empty"<<endl; | |
407 | } | |
aaebd73d | 408 | } |
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