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Commit | Line | Data |
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bf21645b | 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 | ||
16 | #include "AliCorrectionMatrix.h" | |
17 | ||
18 | //____________________________________________________________________ | |
19 | ClassImp(AliCorrectionMatrix) | |
20 | ||
21 | //____________________________________________________________________ | |
22 | AliCorrectionMatrix::AliCorrectionMatrix() : TNamed(), | |
23 | fhMeas(0), | |
24 | fhGene(0), | |
25 | fhCorr(0) | |
26 | { | |
27 | // default constructor | |
28 | } | |
29 | ||
30 | AliCorrectionMatrix::AliCorrectionMatrix(const Char_t* name, const Char_t* title) : TNamed(name, title), | |
31 | fhMeas(0), | |
32 | fhGene(0), | |
33 | fhCorr(0) | |
34 | { | |
35 | // constructor initializing tnamed | |
36 | } | |
37 | ||
38 | //____________________________________________________________________ | |
39 | AliCorrectionMatrix::AliCorrectionMatrix(const AliCorrectionMatrix& c) | |
40 | : TNamed(c) | |
41 | { | |
42 | // copy constructor | |
43 | ((AliCorrectionMatrix &)c).Copy(*this); | |
44 | } | |
45 | ||
46 | //____________________________________________________________________ | |
47 | AliCorrectionMatrix::~AliCorrectionMatrix() | |
48 | { | |
49 | // | |
50 | // destructor | |
51 | // | |
52 | ||
53 | if (fhMeas) | |
54 | { | |
55 | delete fhMeas; | |
56 | fhMeas = 0; | |
57 | } | |
58 | ||
59 | if (fhGene) | |
60 | { | |
61 | delete fhGene; | |
62 | fhGene = 0; | |
63 | } | |
64 | ||
65 | if (fhCorr) | |
66 | { | |
67 | delete fhCorr; | |
68 | fhCorr = 0; | |
69 | } | |
70 | } | |
71 | ||
72 | //____________________________________________________________________ | |
73 | AliCorrectionMatrix &AliCorrectionMatrix::operator=(const AliCorrectionMatrix &c) | |
74 | { | |
75 | // assigment operator | |
76 | ||
77 | if (this != &c) | |
78 | ((AliCorrectionMatrix &) c).Copy(*this); | |
79 | ||
80 | return *this; | |
81 | } | |
82 | ||
83 | //____________________________________________________________________ | |
84 | void AliCorrectionMatrix::Copy(TObject& c) const | |
85 | { | |
86 | // copy function | |
87 | ||
88 | AliCorrectionMatrix& target = (AliCorrectionMatrix &) c; | |
89 | ||
90 | if (fhMeas) | |
91 | target.fhMeas = dynamic_cast<TH1*> (fhMeas->Clone()); | |
92 | ||
93 | if (fhGene) | |
94 | target.fhGene = dynamic_cast<TH1*> (fhGene->Clone()); | |
95 | ||
96 | if (fhCorr) | |
97 | target.fhCorr = dynamic_cast<TH1*> (fhCorr->Clone()); | |
98 | } | |
99 | ||
100 | //________________________________________________________________________ | |
101 | void AliCorrectionMatrix::SetAxisTitles(const Char_t* titleX, const Char_t* titleY, const Char_t* titleZ) | |
0ab29cfa | 102 | { |
bf21645b | 103 | // |
104 | // method for setting the axis titles of the histograms | |
105 | // | |
106 | ||
107 | fhMeas ->SetXTitle(titleX); fhMeas ->SetYTitle(titleY); fhMeas ->SetZTitle(titleZ); | |
108 | fhGene ->SetXTitle(titleX); fhGene ->SetYTitle(titleY); fhGene ->SetZTitle(titleZ); | |
109 | fhCorr ->SetXTitle(titleX); fhCorr ->SetYTitle(titleY); fhCorr ->SetZTitle(titleZ); | |
110 | } | |
111 | ||
112 | //____________________________________________________________________ | |
113 | Long64_t AliCorrectionMatrix::Merge(TCollection* list) | |
114 | { | |
115 | // Merge a list of AliCorrectionMatrix 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* collectionMeas = new TList; | |
130 | TList* collectionGene = new TList; | |
131 | ||
132 | Int_t count = 0; | |
133 | while ((obj = iter->Next())) { | |
134 | ||
135 | AliCorrectionMatrix* entry = dynamic_cast<AliCorrectionMatrix*> (obj); | |
136 | if (entry == 0) | |
137 | continue; | |
138 | ||
139 | collectionMeas->Add(entry->GetMeasuredHistogram()); | |
140 | collectionGene->Add(entry->GetGeneratedHistogram()); | |
141 | ||
142 | count++; | |
143 | } | |
144 | fhMeas->Merge(collectionMeas); | |
145 | fhGene->Merge(collectionGene); | |
146 | ||
147 | delete collectionMeas; | |
148 | delete collectionGene; | |
149 | ||
150 | return count+1; | |
151 | } | |
152 | ||
153 | //____________________________________________________________________ | |
154 | void AliCorrectionMatrix::Divide() | |
155 | { | |
156 | // | |
157 | // divide the histograms to get the correction | |
158 | // | |
159 | ||
160 | if (!fhMeas || !fhGene) | |
161 | return; | |
162 | ||
163 | fhCorr->Divide(fhGene, fhMeas, 1, 1, "B"); | |
164 | ||
1afae8ff | 165 | Int_t emptyBins = 0; |
166 | for (Int_t x=1; x<=fhCorr->GetNbinsX(); ++x) | |
167 | for (Int_t y=1; y<=fhCorr->GetNbinsY(); ++y) | |
168 | for (Int_t z=1; z<=fhCorr->GetNbinsZ(); ++z) | |
169 | if (fhCorr->GetBinContent(x, y, z) == 0) | |
170 | ++emptyBins; | |
171 | ||
172 | if (emptyBins > 0) | |
173 | printf("INFO: In %s we have %d empty bins (of %d) in the correction map\n", GetName(), emptyBins, fhCorr->GetNbinsX() * fhCorr->GetNbinsY() * fhCorr->GetNbinsZ()); | |
bf21645b | 174 | } |
175 | ||
176 | //____________________________________________________________________ | |
0ab29cfa | 177 | Bool_t AliCorrectionMatrix::LoadHistograms(const Char_t* fileName, const Char_t* dir) |
bf21645b | 178 | { |
179 | // | |
180 | // loads the histograms from a file | |
181 | // | |
1afae8ff | 182 | |
183 | TFile* fin = TFile::Open(fileName); | |
184 | ||
bf21645b | 185 | if(!fin) { |
186 | //Info("LoadHistograms",Form(" %s file does not exist",fileName)); | |
187 | return kFALSE; | |
188 | } | |
189 | ||
190 | if(fhGene) {delete fhGene; fhGene=0;} | |
191 | if(fhCorr) {delete fhCorr; fhCorr=0;} | |
192 | if(fhMeas) {delete fhMeas; fhMeas=0;} | |
193 | ||
0ab29cfa | 194 | fhMeas = dynamic_cast<TH1*> (fin->Get(Form("%s/meas_%s", dir,GetName()))); |
bf21645b | 195 | if(!fhMeas) Info("LoadHistograms","No meas hist available"); |
0ab29cfa | 196 | |
197 | fhGene = dynamic_cast<TH1*> (fin->Get(Form("%s/gene_%s",dir, GetName()))); | |
bf21645b | 198 | if(!fhGene) Info("LoadHistograms","No gene hist available"); |
0ab29cfa | 199 | |
200 | fhCorr = dynamic_cast<TH1*> (fin->Get(Form("%s/corr_%s",dir, GetName()))); | |
bf21645b | 201 | if(!fhCorr) |
202 | { | |
203 | Info("LoadHistograms","No corr hist available"); | |
204 | return kFALSE; | |
205 | } | |
206 | ||
207 | return kTRUE; | |
208 | } | |
209 | ||
210 | //____________________________________________________________________ | |
211 | void AliCorrectionMatrix::SaveHistograms() | |
212 | { | |
213 | // | |
214 | // saves the histograms | |
215 | // | |
216 | ||
217 | fhMeas ->Write(); | |
218 | fhGene ->Write(); | |
219 | ||
220 | if (fhCorr) | |
221 | fhCorr->Write(); | |
222 | } | |
223 | ||
224 | //____________________________________________________________________ | |
225 | void AliCorrectionMatrix::DrawHistograms() | |
226 | { | |
227 | // | |
228 | // draws all the four histograms on one TCanvas | |
229 | // | |
230 | ||
231 | TCanvas* canvas = new TCanvas(Form("correction_%s",fName.Data()), | |
232 | Form("correction_%s",fName.Data()), 800, 800); | |
233 | canvas->Divide(2, 2); | |
234 | ||
235 | canvas->cd(1); | |
236 | if (fhMeas) | |
237 | fhMeas->Draw("COLZ"); | |
238 | ||
239 | canvas->cd(2); | |
240 | if (fhGene) | |
241 | fhGene->Draw("COLZ"); | |
242 | ||
243 | canvas->cd(3); | |
244 | if (fhCorr) | |
245 | fhCorr->Draw("COLZ"); | |
246 | ||
247 | canvas->cd(4); | |
248 | ||
249 | // add: draw here the stat. errors of the correction histogram | |
250 | } | |
0ab29cfa | 251 | |
252 | //____________________________________________________________________ | |
253 | void AliCorrectionMatrix::ReduceInformation() | |
254 | { | |
255 | // this function deletes the measured and generated histograms to reduce the amount of data | |
256 | // in memory | |
257 | ||
258 | if (fhMeas) | |
259 | { | |
260 | delete fhMeas; | |
261 | fhMeas = 0; | |
262 | } | |
263 | ||
264 | if (fhGene) | |
265 | { | |
266 | delete fhGene; | |
267 | fhGene = 0; | |
268 | } | |
269 | } |