fixing warnings
[u/mrichter/AliRoot.git] / PWG0 / AliCorrection.cxx
CommitLineData
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//____________________________________________________________________
22ClassImp(AliCorrection)
23
24//____________________________________________________________________
25AliCorrection::AliCorrection() : TNamed(),
26 fEventCorr(0),
27 fTrackCorr(0)
28{
29 // default constructor
30}
31
32//____________________________________________________________________
770a1f1d 33AliCorrection::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};
65 Float_t binLimitsVtx[] = {-20,-15,-10,-8,-6,-4,-2,0,2,4,6,8,10,15,20};
745d6088 66 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};
67// 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 68// 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 69
745d6088 70 TH3F* dummyBinning = new TH3F("dummyBinning","dummyBinning",14, binLimitsVtx, 20, binLimitsEta , nBinsPt, binLimitsPt);
29771dc8 71
82ac9fc4 72 fEventCorr = new AliCorrectionMatrix2D("EventCorrection", Form("%s EventCorrection", fTitle.Data()), 14, binLimitsVtx, 22, binLimitsN);
73 fTrackCorr = new AliCorrectionMatrix3D("TrackCorrection", Form("%s TrackCorrection", fTitle.Data()), dummyBinning);
06e4b91b 74
75 delete dummyBinning;
29771dc8 76
77 fEventCorr->SetAxisTitles("vtx z [cm]", "Ntracks");
78 fTrackCorr->SetAxisTitles("vtx z [cm]", "#eta", "p_{T} [GeV/c]");
79}
80
81//____________________________________________________________________
82AliCorrection::AliCorrection(const AliCorrection& c) : TNamed(c),
83 fEventCorr(0),
84 fTrackCorr(0)
85{
86 // copy constructor
87 ((AliCorrection &)c).Copy(*this);
88}
89
90//____________________________________________________________________
91AliCorrection::~AliCorrection()
92{
93 //
94 // destructor
95 //
96
97 if (fEventCorr)
98 {
99 delete fEventCorr;
100 fEventCorr = 0;
101 }
102
103 if (fTrackCorr)
104 {
105 delete fTrackCorr;
106 fTrackCorr = 0;
107 }
108}
109
110//____________________________________________________________________
111AliCorrection &AliCorrection::operator=(const AliCorrection &c)
112{
113 // assigment operator
114
115 if (this != &c)
116 ((AliCorrection &) c).Copy(*this);
117
118 return *this;
119}
120
121//____________________________________________________________________
122void AliCorrection::Copy(TObject& c) const
123{
124 // copy function
125
126 AliCorrection& target = (AliCorrection &) c;
127
128 if (fEventCorr)
129 target.fEventCorr = dynamic_cast<AliCorrectionMatrix2D*> (fEventCorr->Clone());
130
131 if (fTrackCorr)
132 target.fTrackCorr = dynamic_cast<AliCorrectionMatrix3D*> (fTrackCorr->Clone());
133}
134
135//____________________________________________________________________
136Long64_t AliCorrection::Merge(TCollection* list)
137{
138 // Merge a list of AliCorrection objects with this (needed for
139 // PROOF).
140 // Returns the number of merged objects (including this).
141
142 if (!list)
143 return 0;
144
145 if (list->IsEmpty())
146 return 1;
147
148 TIterator* iter = list->MakeIterator();
149 TObject* obj;
150
151 // collections of measured and generated histograms
152 TList* collectionEvent = new TList;
153 TList* collectionTrack = new TList;
154
155 Int_t count = 0;
156 while ((obj = iter->Next())) {
157
158 AliCorrection* entry = dynamic_cast<AliCorrection*> (obj);
159 if (entry == 0)
160 continue;
161
162 collectionEvent->Add(entry->fEventCorr);
163 collectionTrack->Add(entry->fTrackCorr);
164
165 count++;
166 }
167 fEventCorr->Merge(collectionEvent);
168 fTrackCorr->Merge(collectionTrack);
169
170 delete collectionEvent;
171 delete collectionTrack;
172
173 return count+1;
174}
175
176//____________________________________________________________________
177void AliCorrection::Divide()
178{
179 //
180 // divide the histograms to get the correction
181 //
182
183 if (!fEventCorr || !fTrackCorr)
184 return;
185
186 fEventCorr->Divide();
187 fTrackCorr->Divide();
188
dd367a14 189 Int_t emptyBins = fTrackCorr->CheckEmptyBins(-9.99, 9.99, -0.79, 0.79, 0.3, 4.9);
29771dc8 190 printf("INFO: In the central region the track correction of %s has %d empty bins\n", GetName(), emptyBins);
191}
192
2e88424e 193//____________________________________________________________________
194void AliCorrection::Add(AliCorrection* aCorrectionToAdd, Float_t c)
195{
196 //
197 // add to measured and generated the measured and generated of aCorrectionToAdd
198 // with the weight c
199
200 fEventCorr->Add(aCorrectionToAdd->GetEventCorrection(),c);
201 fTrackCorr->Add(aCorrectionToAdd->GetTrackCorrection(),c);
202}
203
204
29771dc8 205//____________________________________________________________________
206Bool_t AliCorrection::LoadHistograms(const Char_t* dir)
207{
208 //
209 // loads the histograms from a file
210 // if dir is empty a directory with the name of this object is taken (like in SaveHistogram)
211 //
212
213 if (!fEventCorr || !fTrackCorr)
214 return kFALSE;
215
216 if (!dir)
217 dir = GetName();
218
219 if (!gDirectory->cd(dir))
220 return kFALSE;
221
222 Bool_t success = fEventCorr->LoadHistograms();
223 success &= fTrackCorr->LoadHistograms();
224
225 gDirectory->cd("..");
226
227 return success;
228}
229
230//____________________________________________________________________
231void AliCorrection::SaveHistograms()
232{
233 //
234 // saves the histograms in a directory with the name of this object (GetName)
235 //
236
237 gDirectory->mkdir(GetName());
238 gDirectory->cd(GetName());
239
240 if (fEventCorr)
241 fEventCorr->SaveHistograms();
242
243 if (fTrackCorr)
244 fTrackCorr->SaveHistograms();
245
246 gDirectory->cd("..");
247}
248
249//____________________________________________________________________
250void AliCorrection::ReduceInformation()
251{
252 // this function deletes the measured and generated histograms to reduce the amount of data
253 // in memory
254
255 if (!fEventCorr || !fTrackCorr)
256 return;
257
258 fEventCorr->ReduceInformation();
259 fTrackCorr->ReduceInformation();
260}
261
262//____________________________________________________________________
263void AliCorrection::Reset(Option_t* option)
264{
265 // resets the histograms
266
267 if (fEventCorr)
268 fEventCorr->Reset(option);
269
270 if (fTrackCorr)
271 fTrackCorr->Reset(option);
272}
273
274//____________________________________________________________________
275void AliCorrection::DrawHistograms(const Char_t* name)
276{
277 // draws the corrections
278
279 if (!name)
280 name = GetName();
281
282 if (fEventCorr)
283 fEventCorr->DrawHistograms(Form("%s event", name));
284
285 if (fTrackCorr)
286 fTrackCorr->DrawHistograms(Form("%s track", name));
287}
288
dd367a14 289void AliCorrection::DrawOverview(const char* canvasName)
290{
291 // draw projection of the corrections
292 // to the 3 axis of fTrackCorr and 2 axis of fEventCorr
293
294 TString canvasNameTmp(GetName());
295 if (canvasName)
296 canvasNameTmp = canvasName;
297
298 TCanvas* canvas = new TCanvas(canvasNameTmp, canvasNameTmp, 1200, 800);
299 canvas->Divide(3, 2);
300
301 if (fTrackCorr) {
302 canvas->cd(1);
303 fTrackCorr->Get1DCorrectionHistogram("x", 0.3, 5, -1, 1)->DrawCopy()->GetYaxis()->SetRangeUser(0, 10);
304
305 canvas->cd(2);
306 fTrackCorr->Get1DCorrectionHistogram("y", 0.3, 5, 0, 0)->DrawCopy()->GetYaxis()->SetRangeUser(0, 10);
307
308 canvas->cd(3);
309 fTrackCorr->Get1DCorrectionHistogram("z", 0, -1, -1, 1)->DrawCopy()->GetYaxis()->SetRangeUser(0, 10);
310 }
311
312 if (fEventCorr)
313 {
314 canvas->cd(4);
315 fEventCorr->Get1DCorrectionHistogram("x")->DrawCopy();
316
317 canvas->cd(5);
318 fEventCorr->Get1DCorrectionHistogram("y")->DrawCopy()->GetXaxis()->SetRangeUser(0, 30);
319 }
320}
321
29771dc8 322//____________________________________________________________________
323void AliCorrection::SetCorrectionToUnity()
324{
325 // set the corrections to unity
326
327 if (fEventCorr)
328 fEventCorr->SetCorrectionToUnity();
329
330 if (fTrackCorr)
331 fTrackCorr->SetCorrectionToUnity();
332}
333
334//____________________________________________________________________
335void AliCorrection::Multiply()
336{
337 // call Multiply
338
339 if (fEventCorr)
340 {
341 fEventCorr->Multiply();
342 // now we manually copy the overflow bin of the y axis (multiplicity) over. This is important to get the event count correct
343 TH2F* hist = fEventCorr->GetMeasuredHistogram();
344 for (Int_t x = 1; x <= hist->GetNbinsX(); ++x)
345 fEventCorr->GetGeneratedHistogram()->SetBinContent(x, hist->GetNbinsY() + 1, hist->GetBinContent(x, hist->GetNbinsY() + 1));
346 }
347
348 if (fTrackCorr)
349 fTrackCorr->Multiply();
350}
dd367a14 351
352//____________________________________________________________________
353void AliCorrection::Scale(Double_t factor)
354{
355 // scales the two contained corrections
356
357 fEventCorr->Scale(factor);
358 fTrackCorr->Scale(factor);
359}
360
361//____________________________________________________________________
362void AliCorrection::PrintInfo(Float_t ptCut)
363{
364 // prints some stats
365
366 TH3* measured = GetTrackCorrection()->GetMeasuredHistogram();
367 TH3* generated = GetTrackCorrection()->GetGeneratedHistogram();
368
369 TH2* measuredEvents = GetEventCorrection()->GetMeasuredHistogram();
370 TH2* generatedEvents = GetEventCorrection()->GetGeneratedHistogram();
371
3dfa46a4 372 Printf("AliCorrection::PrintInfo: Whole phasespace:");
373
745d6088 374 Printf("tracks measured: %.1f tracks generated: %.1f, events measured: %.1f, events generated %.1f", measured->Integral(), generated->Integral(), measuredEvents->Integral(), generatedEvents->Integral());
dd367a14 375
3dfa46a4 376 Printf("AliCorrection::PrintInfo: Values in |eta| < 0.8, |vtx-z| < 10 and pt > %.2f:", ptCut);
377
378 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());
379 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());
380
381 Float_t eventsM = measuredEvents->Integral(measuredEvents->GetXaxis()->FindBin(-9.9), measuredEvents->GetXaxis()->FindBin(9.9), 1, measuredEvents->GetNbinsY());
382 Float_t eventsG = generatedEvents->Integral(generatedEvents->GetXaxis()->FindBin(-9.9), generatedEvents->GetXaxis()->FindBin(9.9), 1, generatedEvents->GetNbinsY());
383
745d6088 384 Printf("tracks measured: %.1f tracks generated: %.1f, events measured: %.1f, events generated %.1f", tracksM, tracksG, eventsM, eventsG);
dd367a14 385
3dfa46a4 386 if (tracksM > 0)
387 Printf("Effective average correction factor for TRACKS: %.3f", tracksG / tracksM);
388 if (eventsM > 0)
389 Printf("Effective average correction factor for EVENTS: %.3f", eventsG / eventsM);
dd367a14 390
3dfa46a4 391 if (eventsM > 0 && eventsG > 0)
392 {
393 // normalize to number of events;
394 tracksM /= eventsM;
395 tracksG /= eventsG;
396
397 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);
398 }
dd367a14 399}