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29771dc8 | 1 | /* $Id$ */ |
2 | ||
3 | // ------------------------------------------------------ | |
4 | // | |
5 | // Class to handle corrections. | |
6 | // | |
7 | // ------------------------------------------------------ | |
8 | // | |
9 | ||
10 | #include <TFile.h> | |
11 | #include <TCanvas.h> | |
06e4b91b | 12 | #include <TH3F.h> |
29771dc8 | 13 | #include <TH2F.h> |
14 | ||
15 | #include <AliLog.h> | |
16 | #include "AliCorrectionMatrix2D.h" | |
17 | #include "AliCorrectionMatrix3D.h" | |
18 | ||
19 | #include "AliCorrection.h" | |
20 | ||
21 | //____________________________________________________________________ | |
22 | ClassImp(AliCorrection) | |
23 | ||
24 | //____________________________________________________________________ | |
25 | AliCorrection::AliCorrection() : TNamed(), | |
26 | fEventCorr(0), | |
27 | fTrackCorr(0) | |
28 | { | |
29 | // default constructor | |
30 | } | |
31 | ||
32 | //____________________________________________________________________ | |
770a1f1d | 33 | AliCorrection::AliCorrection(const Char_t* name, const Char_t* title, AliPWG0Helper::AnalysisMode analysisMode) : TNamed(name, title), |
29771dc8 | 34 | fEventCorr(0), |
35 | fTrackCorr(0) | |
36 | { | |
37 | // constructor initializing tnamed | |
38 | ||
116083b1 | 39 | Float_t* binLimitsPt = 0; |
40 | Int_t nBinsPt = 0; | |
41 | ||
42 | // different binnings, better solution could be anticipated... | |
770a1f1d | 43 | if (analysisMode == AliPWG0Helper::kTPC || analysisMode == AliPWG0Helper::kTPCITS) |
116083b1 | 44 | { |
45 | static Float_t binLimitsPtTmp[] = {0.0, 0.05, 0.1, 0.125, 0.15, 0.175, 0.2, 0.225, 0.25, 0.275, 0.3, 0.325, 0.35, 0.375, 0.4, 0.425, 0.45, 0.475, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, 5.0, 10.0, 100.0}; | |
46 | binLimitsPt = (Float_t*) binLimitsPtTmp; | |
47 | nBinsPt = 28; | |
745d6088 | 48 | } |
770a1f1d | 49 | else if (analysisMode == AliPWG0Helper::kSPD) |
116083b1 | 50 | { |
7307d52c | 51 | static Float_t binLimitsPtTmp[] = {-0.5, 100.0}; |
116083b1 | 52 | binLimitsPt = (Float_t*) binLimitsPtTmp; |
53 | nBinsPt = 1; | |
54 | } | |
55 | ||
56 | if (!binLimitsPt) | |
57 | { | |
58 | Printf("FATAL: Invalid binning"); | |
59 | return; | |
60 | } | |
61 | ||
29771dc8 | 62 | Float_t binLimitsN[] = {-0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5, 10.5, 12.5, 14.5, 16.5, 18.5, 20.5, 25.5, 30.5, 40.5, 50.5, 100.5, 300.5}; |
63 | //Float_t binLimitsVtx[] = {-20,-15,-10,-6,-3,0,3,6,10,15,20}; | |
083a636e | 64 | //Float_t binLimitsVtx[] = {-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}; |
567160d6 | 65 | Float_t binLimitsVtx[] = {-30,-25,-20,-15,-10,-8,-6,-4,-2,0,2,4,6,8,10,15,20,25,30}; |
66 | Float_t binLimitsEta[] = {-3.0,-2.8,-2.6,-2.4,-2.2, | |
67 | -2.0,-1.8,-1.6,-1.4,-1.2, | |
68 | -1.0,-0.8,-0.6,-0.4,-0.2, 0.0, | |
69 | 0.2, 0.4, 0.6, 0.8, 1.0, | |
70 | 1.2, 1.4, 1.6, 1.8, 2.0, | |
71 | 2.2, 2.4, 2.6, 2.8, 3.0}; | |
72 | // Float_t binLimitsEta[] = {-2,-1.8,-1.6,-1.4,-1.2,-1.0,-0.8,-0.6,-0.4,-0.2,0.0,0.2,0.4,0.6,0.8,1.0,1.2,1.4,1.6,1.8,2.0}; | |
745d6088 | 73 | // Float_t binLimitsEta[] = {-2,-1.9,-1.8,-1.7,-1.6,-1.5,-1.4,-1.3,-1.2,-1.1,-1.0,-0.9,-0.8,-0.7,-0.6,-0.5,-0.4,-0.3,-0.2,-0.1,0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0,1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9,2.0}; |
447c325d | 74 | // Float_t binLimitsEta[] = { -7.0, -6.9, -6.8, -6.7, -6.6, -6.5, -6.4, -6.3, -6.2, -6.1, -6.0, -5.9, -5.8, -5.7, -5.6, -5.5, -5.4, -5.3, -5.2, -5.1, -5.0, -4.9, -4.8, -4.7, -4.6, -4.5, -4.4, -4.3, -4.2, -4.1, -4.0, -3.9, -3.8, -3.7, -3.6, -3.5, -3.4, -3.3, -3.2, -3.1, -3.0, -2.9, -2.8, -2.7, -2.6, -2.5, -2.4, -2.3, -2.2, -2.1, -2.0, -1.9, -1.8, -1.7, -1.6, -1.5, -1.4, -1.3, -1.2, -1.1, -1.0, -0.9, -0.8, -0.7, -0.6, -0.5, -0.4, -0.3, -0.2, -0.1, -0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0 }; |
06e4b91b | 75 | |
567160d6 | 76 | TH3F* dummyBinning = new TH3F("dummyBinning","dummyBinning",18, binLimitsVtx, 30, binLimitsEta , nBinsPt, binLimitsPt); |
29771dc8 | 77 | |
567160d6 | 78 | fEventCorr = new AliCorrectionMatrix2D("EventCorrection", Form("%s EventCorrection", fTitle.Data()), 18, binLimitsVtx, 22, binLimitsN); |
82ac9fc4 | 79 | fTrackCorr = new AliCorrectionMatrix3D("TrackCorrection", Form("%s TrackCorrection", fTitle.Data()), dummyBinning); |
06e4b91b | 80 | |
81 | delete dummyBinning; | |
29771dc8 | 82 | |
83 | fEventCorr->SetAxisTitles("vtx z [cm]", "Ntracks"); | |
84 | fTrackCorr->SetAxisTitles("vtx z [cm]", "#eta", "p_{T} [GeV/c]"); | |
85 | } | |
86 | ||
87 | //____________________________________________________________________ | |
88 | AliCorrection::AliCorrection(const AliCorrection& c) : TNamed(c), | |
89 | fEventCorr(0), | |
90 | fTrackCorr(0) | |
91 | { | |
92 | // copy constructor | |
93 | ((AliCorrection &)c).Copy(*this); | |
94 | } | |
95 | ||
96 | //____________________________________________________________________ | |
97 | AliCorrection::~AliCorrection() | |
98 | { | |
99 | // | |
100 | // destructor | |
101 | // | |
102 | ||
103 | if (fEventCorr) | |
104 | { | |
105 | delete fEventCorr; | |
106 | fEventCorr = 0; | |
107 | } | |
108 | ||
109 | if (fTrackCorr) | |
110 | { | |
111 | delete fTrackCorr; | |
112 | fTrackCorr = 0; | |
113 | } | |
114 | } | |
115 | ||
116 | //____________________________________________________________________ | |
117 | AliCorrection &AliCorrection::operator=(const AliCorrection &c) | |
118 | { | |
119 | // assigment operator | |
120 | ||
121 | if (this != &c) | |
122 | ((AliCorrection &) c).Copy(*this); | |
123 | ||
124 | return *this; | |
125 | } | |
126 | ||
127 | //____________________________________________________________________ | |
128 | void AliCorrection::Copy(TObject& c) const | |
129 | { | |
130 | // copy function | |
131 | ||
132 | AliCorrection& target = (AliCorrection &) c; | |
133 | ||
134 | if (fEventCorr) | |
135 | target.fEventCorr = dynamic_cast<AliCorrectionMatrix2D*> (fEventCorr->Clone()); | |
136 | ||
137 | if (fTrackCorr) | |
138 | target.fTrackCorr = dynamic_cast<AliCorrectionMatrix3D*> (fTrackCorr->Clone()); | |
139 | } | |
140 | ||
141 | //____________________________________________________________________ | |
142 | Long64_t AliCorrection::Merge(TCollection* list) | |
143 | { | |
144 | // Merge a list of AliCorrection objects with this (needed for | |
145 | // PROOF). | |
146 | // Returns the number of merged objects (including this). | |
147 | ||
148 | if (!list) | |
149 | return 0; | |
150 | ||
151 | if (list->IsEmpty()) | |
152 | return 1; | |
153 | ||
154 | TIterator* iter = list->MakeIterator(); | |
155 | TObject* obj; | |
156 | ||
157 | // collections of measured and generated histograms | |
158 | TList* collectionEvent = new TList; | |
159 | TList* collectionTrack = new TList; | |
160 | ||
161 | Int_t count = 0; | |
162 | while ((obj = iter->Next())) { | |
163 | ||
164 | AliCorrection* entry = dynamic_cast<AliCorrection*> (obj); | |
165 | if (entry == 0) | |
166 | continue; | |
167 | ||
168 | collectionEvent->Add(entry->fEventCorr); | |
169 | collectionTrack->Add(entry->fTrackCorr); | |
170 | ||
171 | count++; | |
172 | } | |
173 | fEventCorr->Merge(collectionEvent); | |
174 | fTrackCorr->Merge(collectionTrack); | |
175 | ||
176 | delete collectionEvent; | |
177 | delete collectionTrack; | |
178 | ||
179 | return count+1; | |
180 | } | |
181 | ||
182 | //____________________________________________________________________ | |
183 | void AliCorrection::Divide() | |
184 | { | |
185 | // | |
186 | // divide the histograms to get the correction | |
187 | // | |
188 | ||
189 | if (!fEventCorr || !fTrackCorr) | |
190 | return; | |
191 | ||
192 | fEventCorr->Divide(); | |
193 | fTrackCorr->Divide(); | |
194 | ||
dd367a14 | 195 | Int_t emptyBins = fTrackCorr->CheckEmptyBins(-9.99, 9.99, -0.79, 0.79, 0.3, 4.9); |
29771dc8 | 196 | printf("INFO: In the central region the track correction of %s has %d empty bins\n", GetName(), emptyBins); |
197 | } | |
198 | ||
2e88424e | 199 | //____________________________________________________________________ |
200 | void AliCorrection::Add(AliCorrection* aCorrectionToAdd, Float_t c) | |
201 | { | |
202 | // | |
203 | // add to measured and generated the measured and generated of aCorrectionToAdd | |
204 | // with the weight c | |
205 | ||
206 | fEventCorr->Add(aCorrectionToAdd->GetEventCorrection(),c); | |
207 | fTrackCorr->Add(aCorrectionToAdd->GetTrackCorrection(),c); | |
208 | } | |
209 | ||
210 | ||
29771dc8 | 211 | //____________________________________________________________________ |
212 | Bool_t AliCorrection::LoadHistograms(const Char_t* dir) | |
213 | { | |
214 | // | |
215 | // loads the histograms from a file | |
216 | // if dir is empty a directory with the name of this object is taken (like in SaveHistogram) | |
217 | // | |
218 | ||
219 | if (!fEventCorr || !fTrackCorr) | |
220 | return kFALSE; | |
221 | ||
222 | if (!dir) | |
223 | dir = GetName(); | |
224 | ||
225 | if (!gDirectory->cd(dir)) | |
226 | return kFALSE; | |
227 | ||
228 | Bool_t success = fEventCorr->LoadHistograms(); | |
229 | success &= fTrackCorr->LoadHistograms(); | |
230 | ||
231 | gDirectory->cd(".."); | |
232 | ||
233 | return success; | |
234 | } | |
235 | ||
236 | //____________________________________________________________________ | |
237 | void AliCorrection::SaveHistograms() | |
238 | { | |
239 | // | |
240 | // saves the histograms in a directory with the name of this object (GetName) | |
241 | // | |
242 | ||
243 | gDirectory->mkdir(GetName()); | |
244 | gDirectory->cd(GetName()); | |
245 | ||
246 | if (fEventCorr) | |
247 | fEventCorr->SaveHistograms(); | |
248 | ||
249 | if (fTrackCorr) | |
250 | fTrackCorr->SaveHistograms(); | |
251 | ||
252 | gDirectory->cd(".."); | |
253 | } | |
254 | ||
255 | //____________________________________________________________________ | |
256 | void AliCorrection::ReduceInformation() | |
257 | { | |
258 | // this function deletes the measured and generated histograms to reduce the amount of data | |
259 | // in memory | |
260 | ||
261 | if (!fEventCorr || !fTrackCorr) | |
262 | return; | |
263 | ||
264 | fEventCorr->ReduceInformation(); | |
265 | fTrackCorr->ReduceInformation(); | |
266 | } | |
267 | ||
268 | //____________________________________________________________________ | |
269 | void AliCorrection::Reset(Option_t* option) | |
270 | { | |
271 | // resets the histograms | |
272 | ||
273 | if (fEventCorr) | |
274 | fEventCorr->Reset(option); | |
275 | ||
276 | if (fTrackCorr) | |
277 | fTrackCorr->Reset(option); | |
278 | } | |
279 | ||
280 | //____________________________________________________________________ | |
281 | void AliCorrection::DrawHistograms(const Char_t* name) | |
282 | { | |
283 | // draws the corrections | |
284 | ||
285 | if (!name) | |
286 | name = GetName(); | |
287 | ||
288 | if (fEventCorr) | |
289 | fEventCorr->DrawHistograms(Form("%s event", name)); | |
290 | ||
291 | if (fTrackCorr) | |
292 | fTrackCorr->DrawHistograms(Form("%s track", name)); | |
293 | } | |
294 | ||
dd367a14 | 295 | void AliCorrection::DrawOverview(const char* canvasName) |
296 | { | |
297 | // draw projection of the corrections | |
298 | // to the 3 axis of fTrackCorr and 2 axis of fEventCorr | |
299 | ||
300 | TString canvasNameTmp(GetName()); | |
301 | if (canvasName) | |
302 | canvasNameTmp = canvasName; | |
303 | ||
304 | TCanvas* canvas = new TCanvas(canvasNameTmp, canvasNameTmp, 1200, 800); | |
305 | canvas->Divide(3, 2); | |
306 | ||
307 | if (fTrackCorr) { | |
308 | canvas->cd(1); | |
309 | fTrackCorr->Get1DCorrectionHistogram("x", 0.3, 5, -1, 1)->DrawCopy()->GetYaxis()->SetRangeUser(0, 10); | |
310 | ||
311 | canvas->cd(2); | |
312 | fTrackCorr->Get1DCorrectionHistogram("y", 0.3, 5, 0, 0)->DrawCopy()->GetYaxis()->SetRangeUser(0, 10); | |
313 | ||
314 | canvas->cd(3); | |
315 | fTrackCorr->Get1DCorrectionHistogram("z", 0, -1, -1, 1)->DrawCopy()->GetYaxis()->SetRangeUser(0, 10); | |
316 | } | |
317 | ||
318 | if (fEventCorr) | |
319 | { | |
320 | canvas->cd(4); | |
321 | fEventCorr->Get1DCorrectionHistogram("x")->DrawCopy(); | |
322 | ||
323 | canvas->cd(5); | |
324 | fEventCorr->Get1DCorrectionHistogram("y")->DrawCopy()->GetXaxis()->SetRangeUser(0, 30); | |
325 | } | |
326 | } | |
327 | ||
29771dc8 | 328 | //____________________________________________________________________ |
329 | void AliCorrection::SetCorrectionToUnity() | |
330 | { | |
331 | // set the corrections to unity | |
332 | ||
333 | if (fEventCorr) | |
334 | fEventCorr->SetCorrectionToUnity(); | |
335 | ||
336 | if (fTrackCorr) | |
337 | fTrackCorr->SetCorrectionToUnity(); | |
338 | } | |
339 | ||
340 | //____________________________________________________________________ | |
341 | void AliCorrection::Multiply() | |
342 | { | |
343 | // call Multiply | |
344 | ||
345 | if (fEventCorr) | |
346 | { | |
347 | fEventCorr->Multiply(); | |
348 | // now we manually copy the overflow bin of the y axis (multiplicity) over. This is important to get the event count correct | |
349 | TH2F* hist = fEventCorr->GetMeasuredHistogram(); | |
350 | for (Int_t x = 1; x <= hist->GetNbinsX(); ++x) | |
351 | fEventCorr->GetGeneratedHistogram()->SetBinContent(x, hist->GetNbinsY() + 1, hist->GetBinContent(x, hist->GetNbinsY() + 1)); | |
352 | } | |
353 | ||
354 | if (fTrackCorr) | |
355 | fTrackCorr->Multiply(); | |
356 | } | |
dd367a14 | 357 | |
358 | //____________________________________________________________________ | |
359 | void AliCorrection::Scale(Double_t factor) | |
360 | { | |
361 | // scales the two contained corrections | |
362 | ||
363 | fEventCorr->Scale(factor); | |
364 | fTrackCorr->Scale(factor); | |
365 | } | |
366 | ||
367 | //____________________________________________________________________ | |
368 | void AliCorrection::PrintInfo(Float_t ptCut) | |
369 | { | |
370 | // prints some stats | |
371 | ||
372 | TH3* measured = GetTrackCorrection()->GetMeasuredHistogram(); | |
373 | TH3* generated = GetTrackCorrection()->GetGeneratedHistogram(); | |
374 | ||
375 | TH2* measuredEvents = GetEventCorrection()->GetMeasuredHistogram(); | |
376 | TH2* generatedEvents = GetEventCorrection()->GetGeneratedHistogram(); | |
377 | ||
3dfa46a4 | 378 | Printf("AliCorrection::PrintInfo: Whole phasespace:"); |
379 | ||
745d6088 | 380 | Printf("tracks measured: %.1f tracks generated: %.1f, events measured: %.1f, events generated %.1f", measured->Integral(), generated->Integral(), measuredEvents->Integral(), generatedEvents->Integral()); |
dd367a14 | 381 | |
3dfa46a4 | 382 | Printf("AliCorrection::PrintInfo: Values in |eta| < 0.8, |vtx-z| < 10 and pt > %.2f:", ptCut); |
383 | ||
384 | Float_t tracksM = measured->Integral(measured->GetXaxis()->FindBin(-9.9), measured->GetXaxis()->FindBin(9.9), measured->GetYaxis()->FindBin(-0.79), measured->GetYaxis()->FindBin(0.79), measured->GetZaxis()->FindBin(ptCut), measured->GetZaxis()->GetNbins()); | |
385 | Float_t tracksG = generated->Integral(generated->GetXaxis()->FindBin(-9.9), generated->GetXaxis()->FindBin(9.9), generated->GetYaxis()->FindBin(-0.79), generated->GetYaxis()->FindBin(0.79), generated->GetZaxis()->FindBin(ptCut), generated->GetZaxis()->GetNbins()); | |
386 | ||
387 | Float_t eventsM = measuredEvents->Integral(measuredEvents->GetXaxis()->FindBin(-9.9), measuredEvents->GetXaxis()->FindBin(9.9), 1, measuredEvents->GetNbinsY()); | |
388 | Float_t eventsG = generatedEvents->Integral(generatedEvents->GetXaxis()->FindBin(-9.9), generatedEvents->GetXaxis()->FindBin(9.9), 1, generatedEvents->GetNbinsY()); | |
389 | ||
745d6088 | 390 | Printf("tracks measured: %.1f tracks generated: %.1f, events measured: %.1f, events generated %.1f", tracksM, tracksG, eventsM, eventsG); |
dd367a14 | 391 | |
3dfa46a4 | 392 | if (tracksM > 0) |
393 | Printf("Effective average correction factor for TRACKS: %.3f", tracksG / tracksM); | |
394 | if (eventsM > 0) | |
395 | Printf("Effective average correction factor for EVENTS: %.3f", eventsG / eventsM); | |
dd367a14 | 396 | |
3dfa46a4 | 397 | if (eventsM > 0 && eventsG > 0) |
398 | { | |
399 | // normalize to number of events; | |
400 | tracksM /= eventsM; | |
401 | tracksG /= eventsG; | |
402 | ||
403 | Printf("%.2f tracks/event measured, %.2f tracks/event after correction --> effective average correction factor is %.3f (pt cut %.2f GeV/c)", tracksM, tracksG, tracksG / tracksM, ptCut); | |
404 | } | |
dd367a14 | 405 | } |