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3baa4bfd | 1 | //------------------------------------------------------------------------------ |
2 | // Implementation of AliComparisonDCA class. It keeps information from | |
3 | // comparison of reconstructed and MC particle tracks. In addtion, | |
4 | // it keeps selection cuts used during comparison. The comparison | |
5 | // information is stored in the ROOT histograms. Analysis of these | |
6 | // histograms can be done by using Analyse() class function. The result of | |
7 | // the analysis (histograms/graphs) are stored in the folder | |
8 | // which is a data member of AliComparisonDCA. | |
9 | // | |
10 | // Author: J.Otwinowski 04/02/2008 | |
11 | //------------------------------------------------------------------------------ | |
12 | ||
13 | /* | |
14 | ||
15 | // after running comparison task, read the file, and get component | |
b4126c69 | 16 | gROOT->LoadMacro("$ALICE_ROOT/PWG1/Macros/LoadMyLibs.C"); |
17 | LoadMyLibs(); | |
3baa4bfd | 18 | TFile f("Output.root"); |
19 | AliComparisonDCA * compObj = (AliComparisonDCA*)f.Get("AliComparisonDCA"); | |
20 | ||
b4126c69 | 21 | // Analyse comparison data |
3baa4bfd | 22 | compObj->Analyse(); |
23 | ||
24 | // the output histograms/graphs will be stored in the folder "folderDCA" | |
25 | compObj->GetAnalysisFolder()->ls("*"); | |
26 | ||
27 | // user can save whole comparison object (or only folder with anlysed histograms) | |
28 | // in the seperate output file (e.g.) | |
29 | TFile fout("Analysed_DCA.root","recreate"); | |
30 | compObj->Write(); // compObj->GetAnalysisFolder()->Write(); | |
31 | fout.Close(); | |
32 | ||
33 | */ | |
34 | ||
35 | #include <iostream> | |
36 | ||
37 | #include "TFile.h" | |
38 | #include "TCint.h" | |
39 | #include "TH3F.h" | |
40 | #include "TH2F.h" | |
41 | #include "TF1.h" | |
42 | #include "TProfile.h" | |
43 | #include "TProfile2D.h" | |
44 | #include "TGraph2D.h" | |
45 | #include "TCanvas.h" | |
46 | #include "TGraph.h" | |
47 | // | |
48 | #include "AliTracker.h" | |
49 | #include "AliESDEvent.h" | |
50 | #include "AliESD.h" | |
51 | #include "AliESDfriend.h" | |
52 | #include "AliESDfriendTrack.h" | |
53 | #include "AliRecInfoCuts.h" | |
54 | #include "AliMCInfoCuts.h" | |
55 | #include "AliLog.h" | |
56 | #include "AliESDVertex.h" | |
57 | // | |
58 | #include "AliMathBase.h" | |
59 | #include "AliTreeDraw.h" | |
60 | ||
61 | #include "AliMCInfo.h" | |
62 | #include "AliESDRecInfo.h" | |
63 | #include "AliComparisonDCA.h" | |
64 | ||
65 | using namespace std; | |
66 | ||
67 | ClassImp(AliComparisonDCA) | |
68 | ||
69 | //_____________________________________________________________________________ | |
70 | AliComparisonDCA::AliComparisonDCA(): | |
71 | // TNamed("AliComparisonDCA","AliComparisonDCA"), | |
72 | AliComparisonObject("AliComparisonDCA"), | |
73 | ||
74 | // DCA histograms | |
75 | fD0TanSPtB1(0), | |
76 | fD1TanSPtB1(0), | |
77 | fD0TanSPtL1(0), | |
78 | fD1TanSPtL1(0), | |
79 | fD0TanSPtInTPC(0), | |
80 | fD1TanSPtInTPC(0), | |
81 | fVertex(0), | |
82 | ||
83 | // Cuts | |
84 | fCutsRC(0), | |
85 | fCutsMC(0), | |
86 | ||
87 | // histogram folder | |
88 | fAnalysisFolder(0) | |
89 | { | |
90 | Init(); | |
3baa4bfd | 91 | } |
92 | ||
93 | //_____________________________________________________________________________ | |
94 | AliComparisonDCA::~AliComparisonDCA() | |
95 | { | |
96 | // | |
97 | if(fD0TanSPtB1) delete fD0TanSPtB1; fD0TanSPtB1=0; | |
98 | if(fD1TanSPtB1) delete fD1TanSPtB1; fD1TanSPtB1=0; | |
99 | if(fD0TanSPtL1) delete fD0TanSPtL1; fD0TanSPtL1=0; | |
100 | if(fD1TanSPtL1) delete fD1TanSPtL1; fD1TanSPtL1=0; | |
101 | if(fD0TanSPtInTPC) delete fD0TanSPtInTPC; fD0TanSPtInTPC=0; | |
102 | if(fD1TanSPtInTPC) delete fD1TanSPtInTPC; fD1TanSPtInTPC=0; | |
103 | if(fVertex) delete fVertex; fVertex=0; | |
104 | if(fAnalysisFolder) delete fAnalysisFolder; fAnalysisFolder=0; | |
105 | ||
106 | } | |
107 | ||
108 | //_____________________________________________________________________________ | |
109 | void AliComparisonDCA::Init() | |
110 | { | |
111 | // DCA histograms | |
112 | fD0TanSPtB1 = new TH3F("DCAyTanSPtB1","DCAyTanSPt",40,-2,2, 10,0.3,3, 100,-1,1); | |
113 | fD0TanSPtB1->SetXTitle("tan(#theta)"); | |
114 | fD0TanSPtB1->SetYTitle("#sqrt{p_{t}(GeV/c)}"); | |
115 | fD0TanSPtB1->SetZTitle("DCA_{xy}"); | |
116 | ||
117 | fD1TanSPtB1 = new TH3F("DCAzTanSPtB1","DCAzTanSPt",40,-2,2, 10,0.3,3, 100,-1,1); | |
118 | fD1TanSPtB1->SetXTitle("tan(#theta)"); | |
119 | fD1TanSPtB1->SetYTitle("#sqrt(p_{t}(GeV/c))"); | |
120 | fD1TanSPtB1->SetZTitle("DCA_{z}"); | |
121 | ||
122 | fD0TanSPtL1 = new TH3F("DCAyTanSPtL1","DCAyTanSPt",40,-2,2, 10,0.3,3, 100,-1,1); | |
123 | fD0TanSPtL1->SetXTitle("tan(#theta)"); | |
124 | fD0TanSPtL1->SetYTitle("#sqrt{p_{t}(GeV/c)}"); | |
125 | fD0TanSPtL1->SetZTitle("DCA_{xy}"); | |
126 | ||
127 | fD1TanSPtL1 = new TH3F("DCAzTanSPtL1","DCAzTanSPt",40,-2,2, 10,0.3,3, 100, -1,1); | |
128 | fD1TanSPtL1->SetXTitle("tan(#theta)"); | |
129 | fD1TanSPtL1->SetYTitle("#sqrt{p_{t}(GeV/c)}"); | |
130 | fD1TanSPtL1->SetZTitle("DCA_{z}"); | |
131 | ||
132 | fD0TanSPtInTPC = new TH3F("DCAyTanSPtInTPC","DCAyTanSPt",40,-2,2, 10,0.3,3, 100,-1,1); | |
133 | fD0TanSPtInTPC->SetXTitle("tan(#theta)"); | |
134 | fD0TanSPtInTPC->SetYTitle("#sqrt{p_{t}(GeV/c)}"); | |
135 | fD0TanSPtInTPC->SetZTitle("DCA_{xy}"); | |
136 | ||
137 | fD1TanSPtInTPC = new TH3F("DCAzTanSPtInTPC","DCAzTanSPt",40,-2,2, 10,0.3,3, 100, -1,1); | |
138 | fD1TanSPtInTPC->SetXTitle("tan(#theta)"); | |
139 | fD1TanSPtInTPC->SetYTitle("#sqrt{p_{t}(GeV/c)}"); | |
140 | fD1TanSPtInTPC->SetZTitle("DCA_{z}"); | |
141 | ||
142 | // init cuts | |
143 | if(!fCutsMC) | |
144 | AliDebug(AliLog::kError, "ERROR: Cannot find AliMCInfoCuts object"); | |
145 | if(!fCutsRC) | |
146 | AliDebug(AliLog::kError, "ERROR: Cannot find AliRecInfoCuts object"); | |
147 | ||
148 | // init folder | |
149 | fAnalysisFolder = CreateFolder("folderDCA","Analysis DCA Folder"); | |
b4126c69 | 150 | |
151 | // vertex (0,0,0) | |
152 | fVertex = new AliESDVertex(); | |
153 | fVertex->SetXv(0.0); | |
154 | fVertex->SetYv(0.0); | |
155 | fVertex->SetZv(0.0); | |
3baa4bfd | 156 | } |
157 | ||
158 | //_____________________________________________________________________________ | |
159 | void AliComparisonDCA::Process(AliMCInfo* infoMC, AliESDRecInfo *infoRC) | |
160 | { | |
161 | // Fill DCA comparison information | |
162 | AliExternalTrackParam *track = 0; | |
163 | Double_t field = AliTracker::GetBz(); // nominal Bz field [kG] | |
164 | Double_t kMaxD = 123456.0; // max distance | |
165 | ||
166 | Int_t clusterITS[200]; | |
167 | Double_t dca[2], cov[3]; // dca_xy, dca_z, sigma_xy, sigma_xy_z, sigma_z | |
decf0997 | 168 | Float_t dca1[2], cov1[3]; // dca_xy, dca_z, sigma_xy, sigma_xy_z, sigma_z |
3baa4bfd | 169 | |
170 | Float_t mcpt = infoMC->GetParticle().Pt(); | |
171 | Float_t tantheta = TMath::Tan(infoMC->GetParticle().Theta()-TMath::Pi()*0.5); | |
172 | Float_t spt = TMath::Sqrt(mcpt); | |
173 | ||
174 | // distance to Prim. vertex | |
175 | const Double_t* dv = infoMC->GetVDist(); | |
176 | ||
177 | Bool_t isPrim = TMath::Sqrt(dv[0]*dv[0] + dv[1]*dv[1])<fCutsMC->GetMaxR() && TMath::Abs(dv[2])<fCutsMC->GetMaxVz(); | |
178 | ||
179 | // Check selection cuts | |
180 | if (fCutsMC->IsPdgParticle(TMath::Abs(infoMC->GetParticle().GetPdgCode())) == kFALSE) return; | |
181 | if (!isPrim) return; | |
182 | if (infoRC->GetStatus(1)!=3) return; | |
183 | if (!infoRC->GetESDtrack()) return; | |
184 | if (infoRC->GetESDtrack()->GetTPCNcls()<fCutsRC->GetMinNClustersTPC()) return; | |
185 | if (!infoRC->GetESDtrack()->GetConstrainedParam()) return; | |
186 | ||
187 | // calculate and set prim. vertex | |
188 | fVertex->SetXv( infoMC->GetParticle().Vx() - dv[0] ); | |
189 | fVertex->SetYv( infoMC->GetParticle().Vy() - dv[1] ); | |
190 | fVertex->SetZv( infoMC->GetParticle().Vz() - dv[2] ); | |
191 | ||
192 | // calculate track parameters at vertex | |
193 | if (infoRC->GetESDtrack()->GetTPCInnerParam()) | |
194 | { | |
195 | if ((track = new AliExternalTrackParam(*infoRC->GetESDtrack()->GetTPCInnerParam())) != 0 ) | |
196 | { | |
197 | Bool_t bDCAStatus = track->PropagateToDCA(fVertex,field,kMaxD,dca,cov); | |
198 | ||
199 | if(bDCAStatus) { | |
200 | fD0TanSPtInTPC->Fill(tantheta,spt,dca[0]); | |
201 | fD1TanSPtInTPC->Fill(tantheta,spt,dca[1]); | |
202 | } | |
203 | ||
204 | delete track; | |
205 | } | |
206 | } | |
decf0997 | 207 | |
208 | // ITS + TPC | |
209 | infoRC->GetESDtrack()->GetImpactParameters(dca1,cov1); | |
3baa4bfd | 210 | |
211 | if(infoRC->GetESDtrack()->GetITSclusters(clusterITS)==0){ | |
decf0997 | 212 | fD0TanSPtB1->Fill(tantheta,spt,dca1[0]); |
213 | fD1TanSPtB1->Fill(tantheta,spt,dca1[1]); | |
3baa4bfd | 214 | } |
decf0997 | 215 | fD0TanSPtL1->Fill(tantheta,spt,dca1[0]); |
216 | fD1TanSPtL1->Fill(tantheta,spt,dca1[1]); | |
3baa4bfd | 217 | } |
218 | ||
219 | //_____________________________________________________________________________ | |
220 | Long64_t AliComparisonDCA::Merge(TCollection* list) | |
221 | { | |
222 | // Merge list of objects (needed by PROOF) | |
223 | ||
224 | if (!list) | |
225 | return 0; | |
226 | ||
227 | if (list->IsEmpty()) | |
228 | return 1; | |
229 | ||
230 | TIterator* iter = list->MakeIterator(); | |
231 | TObject* obj = 0; | |
232 | ||
233 | // collection of generated histograms | |
234 | Int_t count=0; | |
235 | while((obj = iter->Next()) != 0) | |
236 | { | |
237 | AliComparisonDCA* entry = dynamic_cast<AliComparisonDCA*>(obj); | |
238 | if (entry == 0) continue; | |
239 | ||
240 | ||
241 | fD0TanSPtB1->Add(entry->fD0TanSPtB1); | |
242 | fD1TanSPtB1->Add(entry->fD1TanSPtB1); | |
243 | fD0TanSPtL1->Add(entry->fD0TanSPtL1); | |
244 | fD1TanSPtL1->Add(entry->fD1TanSPtL1); | |
245 | fD0TanSPtInTPC->Add(entry->fD0TanSPtInTPC); | |
246 | fD1TanSPtInTPC->Add(entry->fD1TanSPtInTPC); | |
247 | ||
248 | count++; | |
249 | } | |
250 | ||
251 | return count; | |
252 | } | |
253 | ||
254 | //_____________________________________________________________________________ | |
255 | void AliComparisonDCA::Exec(AliMCInfo* infoMC, AliESDRecInfo *infoRC){ | |
256 | // Process comparison information | |
257 | Process(infoMC,infoRC); | |
258 | } | |
259 | ||
260 | //_____________________________________________________________________________ | |
261 | void AliComparisonDCA::Analyse() | |
262 | { | |
263 | // | |
264 | // Analyse comparison information and store output histograms | |
265 | // in the analysis folder "folderDCA" | |
266 | // | |
267 | ||
268 | TH1::AddDirectory(kFALSE); | |
269 | ||
decf0997 | 270 | TGraph * gr[4]= { 0,0,0,0 }; |
271 | TGraph2D *gr2[4]= { 0,0,0,0}; | |
3baa4bfd | 272 | AliComparisonDCA * comp=this; |
b4126c69 | 273 | TObjArray *aFolderObj = new TObjArray; |
3baa4bfd | 274 | |
275 | // write results in the folder | |
276 | // Canvas to draw analysed histograms | |
277 | TCanvas * c = new TCanvas("canDCA","DCA resolution"); | |
decf0997 | 278 | c->Divide(2,4); |
3baa4bfd | 279 | // |
280 | // DCA resolution | |
281 | // | |
decf0997 | 282 | c->cd(1); |
283 | gr[0] = AliMathBase::MakeStat1D(comp->fD0TanSPtB1,2,5); | |
284 | gr[0]->GetXaxis()->SetTitle("Tan(#theta)"); | |
285 | gr[0]->GetYaxis()->SetTitle("#sigmaDCA_xy (cm)"); | |
286 | gr[0]->SetName("DCAXYResolTan"); | |
287 | gr[0]->Draw("Al*"); | |
288 | ||
289 | aFolderObj->Add(gr[0]); | |
290 | ||
3baa4bfd | 291 | c->cd(2); |
decf0997 | 292 | gr[1] = AliMathBase::MakeStat1D(comp->fD1TanSPtB1,2,5); |
293 | gr[1]->GetXaxis()->SetTitle("Tan(#theta)"); | |
294 | gr[1]->GetYaxis()->SetTitle("#sigmaDCA_z (cm)"); | |
295 | gr[1]->SetName("DCAZResolTan"); | |
296 | gr[1]->Draw("Al*"); | |
297 | ||
298 | aFolderObj->Add(gr[1]); | |
299 | ||
300 | // | |
301 | // DCA mean value | |
302 | // | |
303 | c->cd(3); | |
304 | gr[2] = AliMathBase::MakeStat1D(comp->fD0TanSPtB1,2,4); | |
305 | gr[2]->GetXaxis()->SetTitle("Tan(#theta)"); | |
306 | gr[2]->GetYaxis()->SetTitle("mean DCA_xy (cm)"); | |
307 | gr[2]->SetName("DCAXYMeanTan"); | |
308 | gr[2]->Draw("Al*"); | |
309 | ||
310 | aFolderObj->Add(gr[2]); | |
311 | ||
312 | c->cd(4); | |
313 | gr[3] = AliMathBase::MakeStat1D(comp->fD1TanSPtB1,2,4); | |
314 | gr[3]->GetXaxis()->SetTitle("Tan(#theta)"); | |
315 | gr[3]->GetYaxis()->SetTitle("mean DCA_z (cm)"); | |
316 | gr[3]->SetName("DCAZMeanTan"); | |
317 | gr[3]->Draw("Al*"); | |
318 | ||
319 | aFolderObj->Add(gr[3]); | |
320 | ||
321 | // 2D DCA resolution | |
322 | c->cd(5); | |
323 | gr2[0] = AliMathBase::MakeStat2D(comp->fD0TanSPtB1,4,2,5); | |
324 | gr2[0]->GetXaxis()->SetTitle("Tan(#theta)"); | |
325 | gr2[0]->GetYaxis()->SetTitle("#sqrt{p_{t}(GeV/c)}"); | |
326 | gr2[0]->GetZaxis()->SetTitle("#sigmaDCA_xy (cm)"); | |
327 | gr2[0]->SetName("DCAXYResolSPTTan"); | |
328 | gr2[0]->GetHistogram()->Draw("colz"); | |
329 | ||
330 | gr2[0]->GetHistogram()->SetName("DCAXYResolSPTTan"); | |
331 | aFolderObj->Add(gr2[0]->GetHistogram()); | |
332 | ||
333 | c->cd(6); | |
334 | gr2[1] = AliMathBase::MakeStat2D(comp->fD1TanSPtB1,4,2,5); | |
335 | gr2[1]->GetXaxis()->SetTitle("Tan(#theta)"); | |
336 | gr2[1]->GetYaxis()->SetTitle("#sqrt{p_{t}(GeV/c)}"); | |
337 | gr2[1]->GetZaxis()->SetTitle("#sigmaDCA_z (cm)"); | |
338 | gr2[1]->SetName("DCAZResolSPTTan"); | |
339 | gr2[1]->GetHistogram()->Draw("colz"); | |
340 | ||
341 | gr2[1]->GetHistogram()->SetName("DCAZResolSPTTan"); | |
342 | aFolderObj->Add(gr2[1]->GetHistogram()); | |
343 | ||
344 | // 2D DCA mean value | |
345 | c->cd(7); | |
346 | gr2[2] = AliMathBase::MakeStat2D(comp->fD0TanSPtB1,4,2,4); | |
347 | gr2[2]->GetXaxis()->SetTitle("Tan(#theta)"); | |
348 | gr2[2]->GetYaxis()->SetTitle("#sqrt{p_{t}(GeV/c)}"); | |
349 | gr2[2]->GetZaxis()->SetTitle("mean DCA_xy (cm)"); | |
350 | gr2[2]->SetName("DCAXYMeanSPTTan"); | |
351 | gr2[2]->GetHistogram()->Draw("colz"); | |
352 | ||
353 | gr2[2]->GetHistogram()->SetName("DCAXYMeanSPTTan"); | |
354 | aFolderObj->Add(gr2[2]->GetHistogram()); | |
355 | ||
356 | c->cd(8); | |
357 | gr2[3] = AliMathBase::MakeStat2D(comp->fD1TanSPtB1,4,2,4); | |
358 | gr2[3]->GetXaxis()->SetTitle("Tan(#theta)"); | |
359 | gr2[3]->GetYaxis()->SetTitle("#sqrt{p_{t}(GeV/c)}"); | |
360 | gr2[3]->GetZaxis()->SetTitle("mean DCA_z (cm)"); | |
361 | gr2[3]->SetName("DCAZMeanSPTTan"); | |
362 | gr2[3]->GetHistogram()->Draw("colz"); | |
363 | ||
364 | gr2[3]->GetHistogram()->SetName("DCAZMeanSPTTan"); | |
365 | aFolderObj->Add(gr2[3]->GetHistogram()); | |
b4126c69 | 366 | |
367 | // export objects to analysis folder | |
368 | fAnalysisFolder = ExportToFolder(aFolderObj); | |
3baa4bfd | 369 | |
b4126c69 | 370 | // delete only TObjArray |
371 | if(aFolderObj) delete aFolderObj; | |
3baa4bfd | 372 | } |
373 | ||
b4126c69 | 374 | //_____________________________________________________________________________ |
375 | TFolder* AliComparisonDCA::ExportToFolder(TObjArray * array) | |
376 | { | |
377 | // recreate folder avery time and export objects to new one | |
378 | // | |
379 | AliComparisonDCA * comp=this; | |
380 | TFolder *folder = comp->GetAnalysisFolder(); | |
381 | ||
382 | TString name, title; | |
383 | TFolder *newFolder = 0; | |
384 | Int_t i = 0; | |
385 | Int_t size = array->GetSize(); | |
386 | ||
387 | if(folder) { | |
388 | // get name and title from old folder | |
389 | name = folder->GetName(); | |
390 | title = folder->GetTitle(); | |
391 | ||
392 | // delete old one | |
393 | delete folder; | |
394 | ||
395 | // create new one | |
396 | newFolder = CreateFolder(name.Data(),title.Data()); | |
397 | newFolder->SetOwner(); | |
398 | ||
399 | // add objects to folder | |
400 | while(i < size) { | |
401 | newFolder->Add(array->At(i)); | |
402 | i++; | |
403 | } | |
404 | } | |
405 | ||
406 | return newFolder; | |
407 | } | |
408 | ||
409 | ||
3baa4bfd | 410 | //_____________________________________________________________________________ |
411 | TFolder* AliComparisonDCA::CreateFolder(TString name,TString title) { | |
412 | // create folder for analysed histograms | |
413 | TFolder *folder = 0; | |
414 | folder = new TFolder(name.Data(),title.Data()); | |
415 | ||
416 | return folder; | |
417 | } |