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1caed034 | 1 | // ------------------------------------------------------ |
2 | // | |
3 | // Class to handle 2d-corrections. | |
4 | // | |
5 | // ------------------------------------------------------ | |
6 | // | |
7 | ||
dc740de4 | 8 | /* $Id$ */ |
9 | ||
ea2ef7cc | 10 | #include <TFile.h> |
11 | #include <TCanvas.h> | |
12 | ||
13 | #include <AliLog.h> | |
14 | ||
ddec1c19 | 15 | #include "CorrectionMatrix2D.h" |
16 | ||
17 | //____________________________________________________________________ | |
c56385d9 | 18 | ClassImp(CorrectionMatrix2D) |
ddec1c19 | 19 | |
1caed034 | 20 | //____________________________________________________________________ |
21 | CorrectionMatrix2D::CorrectionMatrix2D(const CorrectionMatrix2D& c) | |
22 | : TNamed(c) | |
23 | { | |
24 | // copy constructor | |
25 | ((CorrectionMatrix2D &)c).Copy(*this); | |
26 | } | |
27 | ||
ddec1c19 | 28 | //____________________________________________________________________ |
b6d3306b | 29 | CorrectionMatrix2D::CorrectionMatrix2D(Char_t* name, Char_t* title, |
30 | Int_t nBinX, Float_t Xmin, Float_t Xmax, | |
31 | Int_t nBinY, Float_t Ymin, Float_t Ymax) | |
32 | : TNamed(name, title) | |
ddec1c19 | 33 | { |
1caed034 | 34 | // |
35 | // constructor | |
36 | // | |
37 | ||
ddec1c19 | 38 | |
ea2ef7cc | 39 | fhMeas = new TH2F(Form("meas_%s",name), Form("meas_%s",title), nBinX, Xmin, Xmax, nBinY, Ymin, Ymax); |
40 | fhGene = new TH2F(Form("gene_%s",name), Form("gene_%s",title), nBinX, Xmin, Xmax, nBinY, Ymin, Ymax); | |
41 | fhCorr = new TH2F(Form("corr_%s",name), Form("corr_%s",title), nBinX, Xmin, Xmax, nBinY, Ymin, Ymax); | |
3a282793 | 42 | |
43 | fhMeas->Sumw2(); | |
44 | fhGene->Sumw2(); | |
45 | fhCorr->Sumw2(); | |
ddec1c19 | 46 | } |
47 | ||
b6d3306b | 48 | //____________________________________________________________________ |
49 | CorrectionMatrix2D::CorrectionMatrix2D(Char_t* name,Char_t* title, | |
50 | Int_t nBinX, Float_t *X, Int_t nBinY, Float_t *Y) | |
1caed034 | 51 | : TNamed(name, title) |
ddec1c19 | 52 | { |
1caed034 | 53 | // |
54 | // constructor | |
55 | // | |
56 | ||
ea2ef7cc | 57 | fhMeas = new TH2F(Form("meas_%s",name), Form("meas_%s",title), nBinX, X, nBinY, Y); |
58 | fhGene = new TH2F(Form("gene_%s",name), Form("gene_%s",title), nBinX, X, nBinY, Y); | |
59 | fhCorr = new TH2F(Form("corr_%s",name), Form("corr_%s",title), nBinX, X, nBinY, Y); | |
3a282793 | 60 | |
61 | fhMeas->Sumw2(); | |
62 | fhGene->Sumw2(); | |
63 | fhCorr->Sumw2(); | |
ddec1c19 | 64 | } |
65 | ||
66 | ||
b6d3306b | 67 | //____________________________________________________________________ |
68 | CorrectionMatrix2D::~CorrectionMatrix2D() { | |
1caed034 | 69 | // |
70 | // destructor | |
b6d3306b | 71 | // |
72 | if (fhMeas) delete fhMeas; | |
1caed034 | 73 | if (fhGene) delete fhGene; |
b6d3306b | 74 | if (fhCorr) delete fhCorr; |
1caed034 | 75 | } |
76 | ||
77 | //____________________________________________________________________ | |
78 | CorrectionMatrix2D &CorrectionMatrix2D::operator=(const CorrectionMatrix2D &c) | |
79 | { | |
80 | // assigment operator | |
81 | ||
82 | if (this != &c) | |
83 | ((CorrectionMatrix2D &) c).Copy(*this); | |
84 | ||
85 | return *this; | |
86 | } | |
87 | ||
a571621d | 88 | //____________________________________________________________________ |
89 | TH1F* CorrectionMatrix2D::Get1DCorrection(Char_t* opt) { | |
90 | // | |
91 | // integrate the correction over one variable | |
92 | // | |
93 | ||
fcf2fb36 | 94 | TH1D* meas1D = 0; |
95 | TH1D* gene1D = 0; | |
a571621d | 96 | |
97 | if (strcmp(opt,"x")==0) { | |
98 | meas1D = fhMeas->ProjectionX(); | |
99 | gene1D = fhGene->ProjectionX(); | |
100 | } | |
101 | if (strcmp(opt,"y")==0) { | |
102 | meas1D = fhMeas->ProjectionY(); | |
103 | gene1D = fhGene->ProjectionY(); | |
104 | } | |
105 | gene1D->Sumw2(); | |
106 | ||
107 | gene1D->SetName(Form("corr_1D_%s",fName.Data())); | |
108 | gene1D->SetTitle(Form("corr_1D_%s",fName.Data())); | |
109 | ||
110 | gene1D->Divide(gene1D, meas1D, 1, 1, "B"); | |
111 | ||
112 | return (TH1F*)gene1D; | |
113 | } | |
114 | ||
115 | ||
1caed034 | 116 | //____________________________________________________________________ |
117 | void | |
118 | CorrectionMatrix2D::Copy(TObject& c) const | |
119 | { | |
120 | // copy function | |
121 | ||
122 | CorrectionMatrix2D& target = (CorrectionMatrix2D &) c; | |
123 | ||
124 | target.fhMeas = fhMeas; | |
125 | target.fhGene = fhGene; | |
126 | target.fhCorr = fhCorr; | |
b6d3306b | 127 | } |
ddec1c19 | 128 | |
ddec1c19 | 129 | |
b6d3306b | 130 | //________________________________________________________________________ |
131 | void CorrectionMatrix2D::SetAxisTitles(Char_t* titleX, Char_t* titleY) | |
132 | { | |
1caed034 | 133 | // |
134 | // method for setting the axis titles of the histograms | |
135 | // | |
136 | ||
b6d3306b | 137 | fhMeas ->SetXTitle(titleX); fhMeas ->SetYTitle(titleY); |
138 | fhGene ->SetXTitle(titleX); fhGene ->SetYTitle(titleY); | |
139 | fhCorr ->SetXTitle(titleX); fhCorr ->SetYTitle(titleY); | |
ea2ef7cc | 140 | } |
141 | ||
142 | //____________________________________________________________________ | |
143 | Long64_t CorrectionMatrix2D::Merge(TCollection* list) { | |
144 | // Merge a list of CorrectionMatrix2D objects with this (needed for | |
145 | // PROOF). | |
146 | // Returns the number of merged objects (including this). | |
147 | ||
148 | if (!list) | |
149 | return 0; | |
150 | ||
151 | if (list->IsEmpty()) | |
152 | return 1; | |
153 | ||
154 | TIterator* iter = list->MakeIterator(); | |
155 | TObject* obj; | |
156 | ||
157 | // collections of measured and generated histograms | |
158 | TList* collectionMeas = new TList; | |
159 | TList* collectionGene = new TList; | |
160 | ||
161 | Int_t count = 0; | |
162 | while ((obj = iter->Next())) { | |
163 | ||
164 | CorrectionMatrix2D* entry = dynamic_cast<CorrectionMatrix2D*> (obj); | |
165 | if (entry == 0) | |
166 | continue; | |
167 | ||
168 | collectionMeas->Add(entry->GetMeasuredHistogram()); | |
169 | collectionGene->Add(entry->GetGeneratedHistogram()); | |
170 | ||
171 | count++; | |
172 | } | |
173 | fhMeas->Merge(collectionMeas); | |
174 | fhGene->Merge(collectionGene); | |
175 | ||
176 | // is this really faster than just adding the histograms in the list??? | |
177 | delete collectionMeas; | |
178 | delete collectionGene; | |
179 | ||
180 | ||
181 | return count+1; | |
ddec1c19 | 182 | } |
183 | ||
184 | ||
185 | //____________________________________________________________________ | |
ea2ef7cc | 186 | void CorrectionMatrix2D::Divide() { |
1caed034 | 187 | // |
ea2ef7cc | 188 | // divide the histograms to get the correction |
1caed034 | 189 | // |
ddec1c19 | 190 | |
1caed034 | 191 | if (!fhMeas || !fhGene) return; |
ddec1c19 | 192 | |
b6d3306b | 193 | fhCorr->Divide(fhGene, fhMeas, 1,1,"B"); |
ddec1c19 | 194 | |
195 | } | |
196 | ||
197 | //____________________________________________________________________ | |
198 | void | |
1caed034 | 199 | CorrectionMatrix2D::RemoveEdges(Float_t cut, Int_t nBinsXedge, Int_t nBinsYedge) |
200 | { | |
ddec1c19 | 201 | // remove edges of correction histogram by removing |
202 | // - bins with content less than cut | |
203 | // - bins next to bins with zero bin content | |
204 | ||
b6d3306b | 205 | Int_t nBinsX = fhCorr->GetNbinsX(); |
206 | Int_t nBinsY = fhCorr->GetNbinsY(); | |
ddec1c19 | 207 | |
208 | // set bin content to zero for bins with content smaller cut | |
209 | for (Int_t bx=0; bx<=nBinsX; bx++) { | |
210 | for (Int_t by=0; by<=nBinsY; by++) { | |
b6d3306b | 211 | if (fhCorr->GetBinContent(bx,by)>cut) { |
212 | fhCorr->SetBinContent(bx,by,0); | |
213 | fhCorr->SetBinError(bx,by,0); | |
ddec1c19 | 214 | } |
215 | } | |
216 | } | |
217 | ||
218 | // set bin content to zero for bins next to bins with zero | |
b6d3306b | 219 | TH2F* tmp = (TH2F*)fhCorr->Clone("tmp"); |
ddec1c19 | 220 | tmp->Reset(); |
221 | ||
222 | Bool_t done = kFALSE; | |
223 | Int_t nBinsXCount = 0; | |
224 | Int_t nBinsYCount = 0; | |
225 | while (!done) { | |
226 | if (nBinsXCount<nBinsXedge) | |
227 | for (Int_t bx=0; bx<=nBinsX; bx++) { | |
228 | for (Int_t by=0; by<=nBinsY; by++) { | |
b6d3306b | 229 | if ((fhCorr->GetBinContent(bx+1,by)==0)|| |
230 | (fhCorr->GetBinContent(bx-1,by)==0)) | |
ddec1c19 | 231 | tmp->SetBinContent(bx,by,1); |
232 | ||
233 | } | |
234 | } | |
235 | if (nBinsYCount<nBinsYedge) | |
236 | for (Int_t bx=0; bx<=nBinsX; bx++) { | |
237 | for (Int_t by=0; by<=nBinsY; by++) { | |
b6d3306b | 238 | if ((fhCorr->GetBinContent(bx,by+1)==0)|| |
239 | (fhCorr->GetBinContent(bx,by-1)==0)) | |
ddec1c19 | 240 | tmp->SetBinContent(bx,by,1); |
241 | } | |
242 | } | |
243 | for (Int_t bx=0; bx<=nBinsX; bx++) { | |
244 | for (Int_t by=0; by<=nBinsY; by++) { | |
245 | if (tmp->GetBinContent(bx,by)==1) { | |
b6d3306b | 246 | fhCorr->SetBinContent(bx,by,0); |
247 | fhCorr->SetBinError(bx,by,0); | |
ddec1c19 | 248 | } |
249 | } | |
250 | } | |
251 | nBinsXCount++; | |
252 | nBinsYCount++; | |
253 | if ((nBinsXCount>=nBinsXedge)&&(nBinsYCount>=nBinsYedge)) done=kTRUE; | |
254 | } | |
255 | tmp->Delete(); | |
256 | ||
257 | } | |
258 | ||
259 | //____________________________________________________________________ | |
260 | Bool_t CorrectionMatrix2D::LoadHistograms(Char_t* fileName, Char_t* dir) { | |
1caed034 | 261 | // |
262 | // loads the histograms from a file | |
263 | // | |
264 | ||
ddec1c19 | 265 | TFile* fin = TFile::Open(fileName); |
266 | ||
1caed034 | 267 | if(!fin) { |
ddec1c19 | 268 | //Info("LoadHistograms",Form(" %s file does not exist",fileName)); |
1caed034 | 269 | return kFALSE; |
ddec1c19 | 270 | } |
271 | ||
b6d3306b | 272 | if(fhGene) {delete fhGene; fhGene=0;} |
273 | if(fhCorr) {delete fhCorr; fhCorr=0;} | |
b6d3306b | 274 | if(fhMeas) {delete fhMeas; fhMeas=0;} |
ddec1c19 | 275 | |
f2cb0edf | 276 | fhMeas = (TH2F*)fin->Get(Form("%s/meas_%s", dir,GetName())); |
277 | if(!fhMeas) Info("LoadHistograms","No meas hist available"); | |
278 | ||
279 | fhGene = (TH2F*)fin->Get(Form("%s/gene_%s",dir, GetName())); | |
280 | if(!fhGene) Info("LoadHistograms","No gene hist available"); | |
281 | ||
282 | fhCorr = (TH2F*)fin->Get(Form("%s/corr_%s",dir, GetName())); | |
283 | if(!fhCorr) | |
284 | { | |
285 | Info("LoadHistograms","No corr hist available"); | |
286 | return kFALSE; | |
287 | } | |
ddec1c19 | 288 | |
289 | return kTRUE; | |
290 | } | |
291 | ||
292 | ||
293 | //____________________________________________________________________ | |
294 | void | |
295 | CorrectionMatrix2D::SaveHistograms() { | |
1caed034 | 296 | // |
297 | // saves the histograms | |
298 | // | |
a571621d | 299 | |
b6d3306b | 300 | fhMeas ->Write(); |
301 | fhGene ->Write(); | |
ddec1c19 | 302 | |
b6d3306b | 303 | if (fhCorr) |
304 | fhCorr->Write(); | |
ddec1c19 | 305 | } |
306 | ||
307 | //____________________________________________________________________ | |
308 | void CorrectionMatrix2D::DrawHistograms() | |
309 | { | |
1caed034 | 310 | // |
311 | // draws all the four histograms on one TCanvas | |
312 | // | |
313 | ||
a571621d | 314 | TCanvas* canvas = new TCanvas(Form("correction_%s",fName.Data()), |
315 | Form("correction_%s",fName.Data()), 800, 800); | |
ddec1c19 | 316 | canvas->Divide(2, 2); |
a571621d | 317 | |
ddec1c19 | 318 | canvas->cd(1); |
b6d3306b | 319 | if (fhMeas) |
320 | fhMeas->Draw("COLZ"); | |
a571621d | 321 | |
ddec1c19 | 322 | canvas->cd(2); |
b6d3306b | 323 | if (fhGene) |
324 | fhGene->Draw("COLZ"); | |
ddec1c19 | 325 | |
326 | canvas->cd(3); | |
b6d3306b | 327 | if (fhCorr) |
328 | fhCorr->Draw("COLZ"); | |
ea2ef7cc | 329 | |
a571621d | 330 | canvas->cd(4); |
331 | ||
ea2ef7cc | 332 | // add: draw here the stat. errors of the correction histogram |
333 | ||
ddec1c19 | 334 | } |
335 | ||
336 |