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1 | /* $Id$ */ |
2 | |
3 | // ------------------------------------------------------ |
4 | // |
5 | // Class to handle corrections. |
6 | // |
7 | // ------------------------------------------------------ |
8 | // |
9 | |
10 | #include <TFile.h> |
11 | #include <TCanvas.h> |
12 | #include <TH2F.h> |
13 | |
14 | #include <AliLog.h> |
15 | #include "AliCorrectionMatrix2D.h" |
16 | #include "AliCorrectionMatrix3D.h" |
17 | |
18 | #include "AliCorrection.h" |
19 | |
20 | //____________________________________________________________________ |
21 | ClassImp(AliCorrection) |
22 | |
23 | //____________________________________________________________________ |
24 | AliCorrection::AliCorrection() : TNamed(), |
25 | fEventCorr(0), |
26 | fTrackCorr(0) |
27 | { |
28 | // default constructor |
29 | } |
30 | |
31 | //____________________________________________________________________ |
32 | AliCorrection::AliCorrection(const Char_t* name, const Char_t* title) : TNamed(name, title), |
33 | fEventCorr(0), |
34 | fTrackCorr(0) |
35 | { |
36 | // constructor initializing tnamed |
37 | |
38 | 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}; |
39 | 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}; |
40 | //Float_t binLimitsVtx[] = {-20,-15,-10,-6,-3,0,3,6,10,15,20}; |
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41 | //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}; |
42 | Float_t binLimitsVtx[] = {-20,-15,-10,-8,-6,-4,-2,0,2,4,6,8,10,15,20}; |
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43 | |
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44 | fEventCorr = new AliCorrectionMatrix2D("EventCorrection", Form("%s EventCorrection", title), 14, binLimitsVtx, 22, binLimitsN); |
45 | fTrackCorr = new AliCorrectionMatrix3D("TrackCorrection", Form("%s TrackCorrection", title), 14, binLimitsVtx, 40, -2, 2, 28, binLimitsPt); |
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46 | |
47 | fEventCorr->SetAxisTitles("vtx z [cm]", "Ntracks"); |
48 | fTrackCorr->SetAxisTitles("vtx z [cm]", "#eta", "p_{T} [GeV/c]"); |
49 | } |
50 | |
51 | //____________________________________________________________________ |
52 | AliCorrection::AliCorrection(const AliCorrection& c) : TNamed(c), |
53 | fEventCorr(0), |
54 | fTrackCorr(0) |
55 | { |
56 | // copy constructor |
57 | ((AliCorrection &)c).Copy(*this); |
58 | } |
59 | |
60 | //____________________________________________________________________ |
61 | AliCorrection::~AliCorrection() |
62 | { |
63 | // |
64 | // destructor |
65 | // |
66 | |
67 | if (fEventCorr) |
68 | { |
69 | delete fEventCorr; |
70 | fEventCorr = 0; |
71 | } |
72 | |
73 | if (fTrackCorr) |
74 | { |
75 | delete fTrackCorr; |
76 | fTrackCorr = 0; |
77 | } |
78 | } |
79 | |
80 | //____________________________________________________________________ |
81 | AliCorrection &AliCorrection::operator=(const AliCorrection &c) |
82 | { |
83 | // assigment operator |
84 | |
85 | if (this != &c) |
86 | ((AliCorrection &) c).Copy(*this); |
87 | |
88 | return *this; |
89 | } |
90 | |
91 | //____________________________________________________________________ |
92 | void AliCorrection::Copy(TObject& c) const |
93 | { |
94 | // copy function |
95 | |
96 | AliCorrection& target = (AliCorrection &) c; |
97 | |
98 | if (fEventCorr) |
99 | target.fEventCorr = dynamic_cast<AliCorrectionMatrix2D*> (fEventCorr->Clone()); |
100 | |
101 | if (fTrackCorr) |
102 | target.fTrackCorr = dynamic_cast<AliCorrectionMatrix3D*> (fTrackCorr->Clone()); |
103 | } |
104 | |
105 | //____________________________________________________________________ |
106 | Long64_t AliCorrection::Merge(TCollection* list) |
107 | { |
108 | // Merge a list of AliCorrection objects with this (needed for |
109 | // PROOF). |
110 | // Returns the number of merged objects (including this). |
111 | |
112 | if (!list) |
113 | return 0; |
114 | |
115 | if (list->IsEmpty()) |
116 | return 1; |
117 | |
118 | TIterator* iter = list->MakeIterator(); |
119 | TObject* obj; |
120 | |
121 | // collections of measured and generated histograms |
122 | TList* collectionEvent = new TList; |
123 | TList* collectionTrack = new TList; |
124 | |
125 | Int_t count = 0; |
126 | while ((obj = iter->Next())) { |
127 | |
128 | AliCorrection* entry = dynamic_cast<AliCorrection*> (obj); |
129 | if (entry == 0) |
130 | continue; |
131 | |
132 | collectionEvent->Add(entry->fEventCorr); |
133 | collectionTrack->Add(entry->fTrackCorr); |
134 | |
135 | count++; |
136 | } |
137 | fEventCorr->Merge(collectionEvent); |
138 | fTrackCorr->Merge(collectionTrack); |
139 | |
140 | delete collectionEvent; |
141 | delete collectionTrack; |
142 | |
143 | return count+1; |
144 | } |
145 | |
146 | //____________________________________________________________________ |
147 | void AliCorrection::Divide() |
148 | { |
149 | // |
150 | // divide the histograms to get the correction |
151 | // |
152 | |
153 | if (!fEventCorr || !fTrackCorr) |
154 | return; |
155 | |
156 | fEventCorr->Divide(); |
157 | fTrackCorr->Divide(); |
158 | |
159 | Int_t emptyBins = fTrackCorr->CheckEmptyBins(-9.99, 9.99, -0.79, 0.79, 0.3, 9.9); |
160 | printf("INFO: In the central region the track correction of %s has %d empty bins\n", GetName(), emptyBins); |
161 | } |
162 | |
163 | //____________________________________________________________________ |
164 | Bool_t AliCorrection::LoadHistograms(const Char_t* dir) |
165 | { |
166 | // |
167 | // loads the histograms from a file |
168 | // if dir is empty a directory with the name of this object is taken (like in SaveHistogram) |
169 | // |
170 | |
171 | if (!fEventCorr || !fTrackCorr) |
172 | return kFALSE; |
173 | |
174 | if (!dir) |
175 | dir = GetName(); |
176 | |
177 | if (!gDirectory->cd(dir)) |
178 | return kFALSE; |
179 | |
180 | Bool_t success = fEventCorr->LoadHistograms(); |
181 | success &= fTrackCorr->LoadHistograms(); |
182 | |
183 | gDirectory->cd(".."); |
184 | |
185 | return success; |
186 | } |
187 | |
188 | //____________________________________________________________________ |
189 | void AliCorrection::SaveHistograms() |
190 | { |
191 | // |
192 | // saves the histograms in a directory with the name of this object (GetName) |
193 | // |
194 | |
195 | gDirectory->mkdir(GetName()); |
196 | gDirectory->cd(GetName()); |
197 | |
198 | if (fEventCorr) |
199 | fEventCorr->SaveHistograms(); |
200 | |
201 | if (fTrackCorr) |
202 | fTrackCorr->SaveHistograms(); |
203 | |
204 | gDirectory->cd(".."); |
205 | } |
206 | |
207 | //____________________________________________________________________ |
208 | void AliCorrection::ReduceInformation() |
209 | { |
210 | // this function deletes the measured and generated histograms to reduce the amount of data |
211 | // in memory |
212 | |
213 | if (!fEventCorr || !fTrackCorr) |
214 | return; |
215 | |
216 | fEventCorr->ReduceInformation(); |
217 | fTrackCorr->ReduceInformation(); |
218 | } |
219 | |
220 | //____________________________________________________________________ |
221 | void AliCorrection::Reset(Option_t* option) |
222 | { |
223 | // resets the histograms |
224 | |
225 | if (fEventCorr) |
226 | fEventCorr->Reset(option); |
227 | |
228 | if (fTrackCorr) |
229 | fTrackCorr->Reset(option); |
230 | } |
231 | |
232 | //____________________________________________________________________ |
233 | void AliCorrection::DrawHistograms(const Char_t* name) |
234 | { |
235 | // draws the corrections |
236 | |
237 | if (!name) |
238 | name = GetName(); |
239 | |
240 | if (fEventCorr) |
241 | fEventCorr->DrawHistograms(Form("%s event", name)); |
242 | |
243 | if (fTrackCorr) |
244 | fTrackCorr->DrawHistograms(Form("%s track", name)); |
245 | } |
246 | |
247 | //____________________________________________________________________ |
248 | void AliCorrection::SetCorrectionToUnity() |
249 | { |
250 | // set the corrections to unity |
251 | |
252 | if (fEventCorr) |
253 | fEventCorr->SetCorrectionToUnity(); |
254 | |
255 | if (fTrackCorr) |
256 | fTrackCorr->SetCorrectionToUnity(); |
257 | } |
258 | |
259 | //____________________________________________________________________ |
260 | void AliCorrection::Multiply() |
261 | { |
262 | // call Multiply |
263 | |
264 | if (fEventCorr) |
265 | { |
266 | fEventCorr->Multiply(); |
267 | // now we manually copy the overflow bin of the y axis (multiplicity) over. This is important to get the event count correct |
268 | TH2F* hist = fEventCorr->GetMeasuredHistogram(); |
269 | for (Int_t x = 1; x <= hist->GetNbinsX(); ++x) |
270 | fEventCorr->GetGeneratedHistogram()->SetBinContent(x, hist->GetNbinsY() + 1, hist->GetBinContent(x, hist->GetNbinsY() + 1)); |
271 | } |
272 | |
273 | if (fTrackCorr) |
274 | fTrackCorr->Multiply(); |
275 | } |