bug fix in AliCorrection
[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//____________________________________________________________________
33AliCorrection::AliCorrection(const Char_t* name, const Char_t* title) : TNamed(name, title),
34 fEventCorr(0),
35 fTrackCorr(0)
36{
37 // constructor initializing tnamed
38
39 Float_t binLimitsPt[] = {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};
40 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};
41 //Float_t binLimitsVtx[] = {-20,-15,-10,-6,-3,0,3,6,10,15,20};
083a636e 42 //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};
43 Float_t binLimitsVtx[] = {-20,-15,-10,-8,-6,-4,-2,0,2,4,6,8,10,15,20};
447c325d 44 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};
45// 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 46
82ac9fc4 47 TH3F* dummyBinning = new TH3F("dummyBinning","dummyBinning",14, binLimitsVtx, 40, binLimitsEta , 28, binLimitsPt);
29771dc8 48
82ac9fc4 49 fEventCorr = new AliCorrectionMatrix2D("EventCorrection", Form("%s EventCorrection", fTitle.Data()), 14, binLimitsVtx, 22, binLimitsN);
50 fTrackCorr = new AliCorrectionMatrix3D("TrackCorrection", Form("%s TrackCorrection", fTitle.Data()), dummyBinning);
06e4b91b 51
52 delete dummyBinning;
29771dc8 53
54 fEventCorr->SetAxisTitles("vtx z [cm]", "Ntracks");
55 fTrackCorr->SetAxisTitles("vtx z [cm]", "#eta", "p_{T} [GeV/c]");
56}
57
58//____________________________________________________________________
59AliCorrection::AliCorrection(const AliCorrection& c) : TNamed(c),
60 fEventCorr(0),
61 fTrackCorr(0)
62{
63 // copy constructor
64 ((AliCorrection &)c).Copy(*this);
65}
66
67//____________________________________________________________________
68AliCorrection::~AliCorrection()
69{
70 //
71 // destructor
72 //
73
74 if (fEventCorr)
75 {
76 delete fEventCorr;
77 fEventCorr = 0;
78 }
79
80 if (fTrackCorr)
81 {
82 delete fTrackCorr;
83 fTrackCorr = 0;
84 }
85}
86
87//____________________________________________________________________
88AliCorrection &AliCorrection::operator=(const AliCorrection &c)
89{
90 // assigment operator
91
92 if (this != &c)
93 ((AliCorrection &) c).Copy(*this);
94
95 return *this;
96}
97
98//____________________________________________________________________
99void AliCorrection::Copy(TObject& c) const
100{
101 // copy function
102
103 AliCorrection& target = (AliCorrection &) c;
104
105 if (fEventCorr)
106 target.fEventCorr = dynamic_cast<AliCorrectionMatrix2D*> (fEventCorr->Clone());
107
108 if (fTrackCorr)
109 target.fTrackCorr = dynamic_cast<AliCorrectionMatrix3D*> (fTrackCorr->Clone());
110}
111
112//____________________________________________________________________
113Long64_t AliCorrection::Merge(TCollection* list)
114{
115 // Merge a list of AliCorrection objects with this (needed for
116 // PROOF).
117 // Returns the number of merged objects (including this).
118
119 if (!list)
120 return 0;
121
122 if (list->IsEmpty())
123 return 1;
124
125 TIterator* iter = list->MakeIterator();
126 TObject* obj;
127
128 // collections of measured and generated histograms
129 TList* collectionEvent = new TList;
130 TList* collectionTrack = new TList;
131
132 Int_t count = 0;
133 while ((obj = iter->Next())) {
134
135 AliCorrection* entry = dynamic_cast<AliCorrection*> (obj);
136 if (entry == 0)
137 continue;
138
139 collectionEvent->Add(entry->fEventCorr);
140 collectionTrack->Add(entry->fTrackCorr);
141
142 count++;
143 }
144 fEventCorr->Merge(collectionEvent);
145 fTrackCorr->Merge(collectionTrack);
146
147 delete collectionEvent;
148 delete collectionTrack;
149
150 return count+1;
151}
152
153//____________________________________________________________________
154void AliCorrection::Divide()
155{
156 //
157 // divide the histograms to get the correction
158 //
159
160 if (!fEventCorr || !fTrackCorr)
161 return;
162
163 fEventCorr->Divide();
164 fTrackCorr->Divide();
165
166 Int_t emptyBins = fTrackCorr->CheckEmptyBins(-9.99, 9.99, -0.79, 0.79, 0.3, 9.9);
167 printf("INFO: In the central region the track correction of %s has %d empty bins\n", GetName(), emptyBins);
168}
169
2e88424e 170//____________________________________________________________________
171void AliCorrection::Add(AliCorrection* aCorrectionToAdd, Float_t c)
172{
173 //
174 // add to measured and generated the measured and generated of aCorrectionToAdd
175 // with the weight c
176
177 fEventCorr->Add(aCorrectionToAdd->GetEventCorrection(),c);
178 fTrackCorr->Add(aCorrectionToAdd->GetTrackCorrection(),c);
179}
180
181
29771dc8 182//____________________________________________________________________
183Bool_t AliCorrection::LoadHistograms(const Char_t* dir)
184{
185 //
186 // loads the histograms from a file
187 // if dir is empty a directory with the name of this object is taken (like in SaveHistogram)
188 //
189
190 if (!fEventCorr || !fTrackCorr)
191 return kFALSE;
192
193 if (!dir)
194 dir = GetName();
195
196 if (!gDirectory->cd(dir))
197 return kFALSE;
198
199 Bool_t success = fEventCorr->LoadHistograms();
200 success &= fTrackCorr->LoadHistograms();
201
202 gDirectory->cd("..");
203
204 return success;
205}
206
207//____________________________________________________________________
208void AliCorrection::SaveHistograms()
209{
210 //
211 // saves the histograms in a directory with the name of this object (GetName)
212 //
213
214 gDirectory->mkdir(GetName());
215 gDirectory->cd(GetName());
216
217 if (fEventCorr)
218 fEventCorr->SaveHistograms();
219
220 if (fTrackCorr)
221 fTrackCorr->SaveHistograms();
222
223 gDirectory->cd("..");
224}
225
226//____________________________________________________________________
227void AliCorrection::ReduceInformation()
228{
229 // this function deletes the measured and generated histograms to reduce the amount of data
230 // in memory
231
232 if (!fEventCorr || !fTrackCorr)
233 return;
234
235 fEventCorr->ReduceInformation();
236 fTrackCorr->ReduceInformation();
237}
238
239//____________________________________________________________________
240void AliCorrection::Reset(Option_t* option)
241{
242 // resets the histograms
243
244 if (fEventCorr)
245 fEventCorr->Reset(option);
246
247 if (fTrackCorr)
248 fTrackCorr->Reset(option);
249}
250
251//____________________________________________________________________
252void AliCorrection::DrawHistograms(const Char_t* name)
253{
254 // draws the corrections
255
256 if (!name)
257 name = GetName();
258
259 if (fEventCorr)
260 fEventCorr->DrawHistograms(Form("%s event", name));
261
262 if (fTrackCorr)
263 fTrackCorr->DrawHistograms(Form("%s track", name));
264}
265
266//____________________________________________________________________
267void AliCorrection::SetCorrectionToUnity()
268{
269 // set the corrections to unity
270
271 if (fEventCorr)
272 fEventCorr->SetCorrectionToUnity();
273
274 if (fTrackCorr)
275 fTrackCorr->SetCorrectionToUnity();
276}
277
278//____________________________________________________________________
279void AliCorrection::Multiply()
280{
281 // call Multiply
282
283 if (fEventCorr)
284 {
285 fEventCorr->Multiply();
286 // now we manually copy the overflow bin of the y axis (multiplicity) over. This is important to get the event count correct
287 TH2F* hist = fEventCorr->GetMeasuredHistogram();
288 for (Int_t x = 1; x <= hist->GetNbinsX(); ++x)
289 fEventCorr->GetGeneratedHistogram()->SetBinContent(x, hist->GetNbinsY() + 1, hist->GetBinContent(x, hist->GetNbinsY() + 1));
290 }
291
292 if (fTrackCorr)
293 fTrackCorr->Multiply();
294}