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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 | ||
61385583 | 30 | //____________________________________________________________________ |
bf21645b | 31 | AliCorrectionMatrix::AliCorrectionMatrix(const Char_t* name, const Char_t* title) : TNamed(name, title), |
32 | fhMeas(0), | |
33 | fhGene(0), | |
34 | fhCorr(0) | |
35 | { | |
36 | // constructor initializing tnamed | |
37 | } | |
38 | ||
39 | //____________________________________________________________________ | |
61385583 | 40 | AliCorrectionMatrix::AliCorrectionMatrix(const AliCorrectionMatrix& c) : TNamed(c), |
41 | fhMeas(0), | |
42 | fhGene(0), | |
43 | fhCorr(0) | |
bf21645b | 44 | { |
45 | // copy constructor | |
46 | ((AliCorrectionMatrix &)c).Copy(*this); | |
47 | } | |
48 | ||
49 | //____________________________________________________________________ | |
50 | AliCorrectionMatrix::~AliCorrectionMatrix() | |
51 | { | |
52 | // | |
53 | // destructor | |
54 | // | |
55 | ||
56 | if (fhMeas) | |
57 | { | |
58 | delete fhMeas; | |
59 | fhMeas = 0; | |
60 | } | |
61 | ||
62 | if (fhGene) | |
63 | { | |
64 | delete fhGene; | |
65 | fhGene = 0; | |
66 | } | |
67 | ||
68 | if (fhCorr) | |
69 | { | |
70 | delete fhCorr; | |
71 | fhCorr = 0; | |
72 | } | |
73 | } | |
74 | ||
75 | //____________________________________________________________________ | |
76 | AliCorrectionMatrix &AliCorrectionMatrix::operator=(const AliCorrectionMatrix &c) | |
77 | { | |
78 | // assigment operator | |
79 | ||
61385583 | 80 | if (this != &c) |
bf21645b | 81 | ((AliCorrectionMatrix &) c).Copy(*this); |
82 | ||
83 | return *this; | |
84 | } | |
85 | ||
86 | //____________________________________________________________________ | |
87 | void AliCorrectionMatrix::Copy(TObject& c) const | |
88 | { | |
89 | // copy function | |
90 | ||
91 | AliCorrectionMatrix& target = (AliCorrectionMatrix &) c; | |
92 | ||
93 | if (fhMeas) | |
94 | target.fhMeas = dynamic_cast<TH1*> (fhMeas->Clone()); | |
95 | ||
96 | if (fhGene) | |
97 | target.fhGene = dynamic_cast<TH1*> (fhGene->Clone()); | |
98 | ||
99 | if (fhCorr) | |
100 | target.fhCorr = dynamic_cast<TH1*> (fhCorr->Clone()); | |
101 | } | |
102 | ||
103 | //________________________________________________________________________ | |
104 | void AliCorrectionMatrix::SetAxisTitles(const Char_t* titleX, const Char_t* titleY, const Char_t* titleZ) | |
0ab29cfa | 105 | { |
bf21645b | 106 | // |
107 | // method for setting the axis titles of the histograms | |
108 | // | |
109 | ||
110 | fhMeas ->SetXTitle(titleX); fhMeas ->SetYTitle(titleY); fhMeas ->SetZTitle(titleZ); | |
111 | fhGene ->SetXTitle(titleX); fhGene ->SetYTitle(titleY); fhGene ->SetZTitle(titleZ); | |
112 | fhCorr ->SetXTitle(titleX); fhCorr ->SetYTitle(titleY); fhCorr ->SetZTitle(titleZ); | |
113 | } | |
114 | ||
115 | //____________________________________________________________________ | |
116 | Long64_t AliCorrectionMatrix::Merge(TCollection* list) | |
117 | { | |
118 | // Merge a list of AliCorrectionMatrix objects with this (needed for | |
119 | // PROOF). | |
120 | // Returns the number of merged objects (including this). | |
121 | ||
122 | if (!list) | |
123 | return 0; | |
124 | ||
125 | if (list->IsEmpty()) | |
126 | return 1; | |
127 | ||
128 | TIterator* iter = list->MakeIterator(); | |
129 | TObject* obj; | |
130 | ||
131 | // collections of measured and generated histograms | |
132 | TList* collectionMeas = new TList; | |
133 | TList* collectionGene = new TList; | |
134 | ||
135 | Int_t count = 0; | |
136 | while ((obj = iter->Next())) { | |
137 | ||
138 | AliCorrectionMatrix* entry = dynamic_cast<AliCorrectionMatrix*> (obj); | |
139 | if (entry == 0) | |
140 | continue; | |
141 | ||
142 | collectionMeas->Add(entry->GetMeasuredHistogram()); | |
143 | collectionGene->Add(entry->GetGeneratedHistogram()); | |
144 | ||
145 | count++; | |
146 | } | |
147 | fhMeas->Merge(collectionMeas); | |
148 | fhGene->Merge(collectionGene); | |
149 | ||
150 | delete collectionMeas; | |
151 | delete collectionGene; | |
152 | ||
153 | return count+1; | |
154 | } | |
155 | ||
156 | //____________________________________________________________________ | |
157 | void AliCorrectionMatrix::Divide() | |
158 | { | |
159 | // | |
29771dc8 | 160 | // divides generated by measured to get the correction |
161 | // | |
bf21645b | 162 | |
29771dc8 | 163 | if (!fhMeas || !fhGene || !fhCorr) |
bf21645b | 164 | return; |
165 | ||
166 | fhCorr->Divide(fhGene, fhMeas, 1, 1, "B"); | |
167 | ||
1afae8ff | 168 | Int_t emptyBins = 0; |
169 | for (Int_t x=1; x<=fhCorr->GetNbinsX(); ++x) | |
170 | for (Int_t y=1; y<=fhCorr->GetNbinsY(); ++y) | |
171 | for (Int_t z=1; z<=fhCorr->GetNbinsZ(); ++z) | |
172 | if (fhCorr->GetBinContent(x, y, z) == 0) | |
173 | ++emptyBins; | |
174 | ||
175 | if (emptyBins > 0) | |
29771dc8 | 176 | printf("INFO: In %s we have %d empty bins (of %d) in the correction map\n", GetTitle(), emptyBins, fhCorr->GetNbinsX() * fhCorr->GetNbinsY() * fhCorr->GetNbinsZ()); |
bf21645b | 177 | } |
178 | ||
179 | //____________________________________________________________________ | |
29771dc8 | 180 | void AliCorrectionMatrix::Multiply() |
181 | { | |
182 | // | |
183 | // multiplies measured with correction to get the generated | |
184 | // | |
185 | ||
186 | if (!fhMeas || !fhGene || !fhCorr) | |
187 | return; | |
188 | ||
189 | fhGene->Multiply(fhMeas, fhCorr, 1, 1, "B"); | |
190 | } | |
191 | ||
2e88424e | 192 | //____________________________________________________________________ |
193 | void AliCorrectionMatrix::Add(AliCorrectionMatrix* aMatrixToAdd, Float_t c) { | |
194 | // | |
195 | // adds the measured and generated of aMatrixToAdd to measured and generated of this | |
196 | // | |
197 | // NB: the correction will naturally stay the same | |
198 | ||
199 | fhMeas->Add(aMatrixToAdd->GetMeasuredHistogram(), c); | |
200 | fhGene->Add(aMatrixToAdd->GetGeneratedHistogram(), c); | |
201 | } | |
202 | ||
203 | ||
29771dc8 | 204 | //____________________________________________________________________ |
205 | Bool_t AliCorrectionMatrix::LoadHistograms(const Char_t* dir) | |
bf21645b | 206 | { |
207 | // | |
208 | // loads the histograms from a file | |
29771dc8 | 209 | // if dir is empty a directory with the name of this object is taken (like in SaveHistogram) |
bf21645b | 210 | // |
1afae8ff | 211 | |
29771dc8 | 212 | if (!dir) |
213 | dir = GetName(); | |
1afae8ff | 214 | |
29771dc8 | 215 | if (!gDirectory->cd(dir)) |
bf21645b | 216 | return kFALSE; |
29771dc8 | 217 | |
218 | if (fhGene) | |
219 | { | |
220 | delete fhGene; | |
221 | fhGene=0; | |
bf21645b | 222 | } |
0ab29cfa | 223 | |
29771dc8 | 224 | if (fhCorr) |
225 | { | |
226 | delete fhCorr; | |
227 | fhCorr=0; | |
228 | } | |
0ab29cfa | 229 | |
29771dc8 | 230 | if (fhMeas) |
231 | { | |
232 | delete fhMeas; | |
233 | fhMeas=0; | |
bf21645b | 234 | } |
29771dc8 | 235 | |
236 | fhMeas = dynamic_cast<TH1*> (gDirectory->Get("measured")); | |
237 | if (!fhMeas) | |
238 | Info("LoadHistograms", "No measured hist available"); | |
239 | ||
240 | fhGene = dynamic_cast<TH1*> (gDirectory->Get("generated")); | |
241 | if (!fhGene) | |
242 | Info("LoadHistograms", "No generated hist available"); | |
243 | ||
244 | fhCorr = dynamic_cast<TH1*> (gDirectory->Get("correction")); | |
245 | ||
246 | Bool_t success = kTRUE; | |
247 | if (!fhCorr) | |
248 | { | |
249 | Info("LoadHistograms", "No correction hist available"); | |
250 | success = kFALSE; | |
251 | } | |
252 | ||
253 | gDirectory->cd(".."); | |
254 | ||
255 | return success; | |
bf21645b | 256 | } |
257 | ||
258 | //____________________________________________________________________ | |
259 | void AliCorrectionMatrix::SaveHistograms() | |
260 | { | |
261 | // | |
262 | // saves the histograms | |
263 | // | |
264 | ||
29771dc8 | 265 | gDirectory->mkdir(GetName()); |
266 | gDirectory->cd(GetName()); | |
267 | ||
0bd1f8a0 | 268 | if (fhMeas) |
269 | fhMeas ->Write(); | |
270 | ||
271 | if (fhGene) | |
272 | fhGene ->Write(); | |
bf21645b | 273 | |
274 | if (fhCorr) | |
275 | fhCorr->Write(); | |
29771dc8 | 276 | |
277 | gDirectory->cd(".."); | |
bf21645b | 278 | } |
279 | ||
280 | //____________________________________________________________________ | |
29771dc8 | 281 | void AliCorrectionMatrix::DrawHistograms(const Char_t* canvasName) |
bf21645b | 282 | { |
283 | // | |
29771dc8 | 284 | // draws all histograms on one TCanvas |
285 | // if canvasName is 0 the name of this object is taken | |
bf21645b | 286 | // |
287 | ||
29771dc8 | 288 | if (!canvasName) |
289 | canvasName = Form("%s_canvas", GetName()); | |
290 | ||
291 | TCanvas* canvas = new TCanvas(canvasName, GetTitle(), 1200, 400); | |
292 | canvas->Divide(3, 1); | |
bf21645b | 293 | |
294 | canvas->cd(1); | |
295 | if (fhMeas) | |
296 | fhMeas->Draw("COLZ"); | |
29771dc8 | 297 | |
bf21645b | 298 | canvas->cd(2); |
299 | if (fhGene) | |
29771dc8 | 300 | { |
301 | // work around ROOT bug #22011 | |
302 | if (fhGene->GetEntries() == 0) | |
303 | fhGene->SetEntries(1); | |
bf21645b | 304 | fhGene->Draw("COLZ"); |
29771dc8 | 305 | } |
bf21645b | 306 | |
307 | canvas->cd(3); | |
308 | if (fhCorr) | |
309 | fhCorr->Draw("COLZ"); | |
bf21645b | 310 | } |
0ab29cfa | 311 | |
312 | //____________________________________________________________________ | |
313 | void AliCorrectionMatrix::ReduceInformation() | |
314 | { | |
315 | // this function deletes the measured and generated histograms to reduce the amount of data | |
316 | // in memory | |
317 | ||
318 | if (fhMeas) | |
319 | { | |
320 | delete fhMeas; | |
321 | fhMeas = 0; | |
322 | } | |
323 | ||
324 | if (fhGene) | |
325 | { | |
326 | delete fhGene; | |
327 | fhGene = 0; | |
328 | } | |
329 | } | |
ef2713c5 | 330 | |
331 | //____________________________________________________________________ | |
332 | void AliCorrectionMatrix::Reset(Option_t* option) | |
333 | { | |
334 | // resets the histograms | |
335 | ||
336 | if (fhGene) | |
337 | fhGene->Reset(option); | |
338 | ||
339 | if (fhMeas) | |
340 | fhMeas->Reset(option); | |
341 | ||
342 | if (fhCorr) | |
343 | fhCorr->Reset(option); | |
344 | } | |
29771dc8 | 345 | |
346 | //____________________________________________________________________ | |
347 | void AliCorrectionMatrix::SetCorrectionToUnity() | |
348 | { | |
349 | // sets the correction matrix to unity | |
350 | ||
351 | if (!fhCorr) | |
352 | return; | |
353 | ||
354 | for (Int_t x=1; x<=fhCorr->GetNbinsX(); ++x) | |
355 | for (Int_t y=1; y<=fhCorr->GetNbinsY(); ++y) | |
356 | for (Int_t z=1; z<=fhCorr->GetNbinsZ(); ++z) | |
357 | fhCorr->SetBinContent(x, y, z, 1); | |
358 | } |