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13f28255 | 1 | // |
2 | // Class AliRsnFunction | |
3 | // | |
4 | // This class defines a base classe to implement a function | |
5 | // which uses the internal RSN package event format (AliRsnEvent). | |
6 | // It contains some default flags which turn out to be useful: | |
7 | // - a flag to select only the "true" pairs (tracks from same resonance) | |
8 | // - a flag to know if the computation is done over two events (mixing) | |
9 | // | |
10 | // Any kind of analysis object should be implemented as inheriting from this | |
11 | // because the AliRsnAnalyzer which executes the analysis will accept a collection | |
12 | // of such objects, in order to have a unique format of processing method | |
13 | // | |
e0baff8c | 14 | // The user who implements a kind of computation type should inherit from |
15 | // this class and override the virtual functions defined in it, which | |
13f28255 | 16 | // initialize the final output histogram and define how to process data. |
17 | // | |
18 | // | |
19 | // author: A. Pulvirenti (email: alberto.pulvirenti@ct.infn.it) | |
20 | // | |
21 | ||
13f28255 | 22 | #include <TString.h> |
23 | ||
24 | #include "AliLog.h" | |
25 | ||
13f28255 | 26 | #include "AliRsnDaughter.h" |
27 | #include "AliRsnEvent.h" | |
28 | #include "AliRsnPairDef.h" | |
4fbb2459 | 29 | #include "AliRsnPairParticle.h" |
30 | #include "AliRsnFunctionAxis.h" | |
13f28255 | 31 | |
32 | #include "AliRsnFunction.h" | |
33 | ||
34 | ClassImp(AliRsnFunction) | |
35 | ||
36 | //________________________________________________________________________________________ | |
eb079724 | 37 | AliRsnFunction::AliRsnFunction(Bool_t useTH1) : |
4fbb2459 | 38 | TNamed(), |
39 | fPairDef(0x0), | |
40 | fAxisList("AliRsnFunctionAxis", 0), | |
41 | fTrack(0x0), | |
42 | fPair(0x0), | |
43 | fEvent(0x0), | |
eb079724 | 44 | fUseTH1(useTH1), |
45 | fSize(0), | |
46 | fH1(0x0), | |
47 | fHSparse(0x0) | |
13f28255 | 48 | { |
5eb970a4 | 49 | // |
b2028424 | 50 | // Constructor. |
5eb970a4 | 51 | // |
8a22fe6f | 52 | } |
13f28255 | 53 | |
54 | //________________________________________________________________________________________ | |
5eb970a4 | 55 | AliRsnFunction::AliRsnFunction(const AliRsnFunction ©) : |
4fbb2459 | 56 | TNamed(copy), |
57 | fPairDef(copy.fPairDef), | |
58 | fAxisList(copy.fAxisList), | |
59 | fTrack(copy.fTrack), | |
60 | fPair(copy.fPair), | |
61 | fEvent(copy.fEvent), | |
eb079724 | 62 | fUseTH1(copy.fUseTH1), |
63 | fSize(copy.fSize), | |
64 | fH1(0x0), | |
65 | fHSparse(0x0) | |
13f28255 | 66 | { |
5eb970a4 | 67 | // |
68 | // Copy constructor. | |
69 | // | |
13f28255 | 70 | } |
71 | ||
72 | //________________________________________________________________________________________ | |
5eb970a4 | 73 | const AliRsnFunction& AliRsnFunction::operator=(const AliRsnFunction& copy) |
13f28255 | 74 | { |
5eb970a4 | 75 | // |
76 | // Assignment operator. | |
77 | // | |
78 | ||
79 | SetName(copy.GetName()); | |
80 | SetTitle(copy.GetTitle()); | |
81 | ||
5eb970a4 | 82 | fPairDef = copy.fPairDef; |
5eb970a4 | 83 | fTrack = copy.fTrack; |
84 | fPair = copy.fPair; | |
85 | fEvent = copy.fEvent; | |
eb079724 | 86 | fUseTH1 = copy.fUseTH1; |
87 | fSize = copy.fSize; | |
5eb970a4 | 88 | |
eb079724 | 89 | if (fH1) delete fH1; |
90 | fH1 = 0x0; | |
91 | ||
92 | if (fHSparse) delete fHSparse; | |
93 | fHSparse = 0x0; | |
5eb970a4 | 94 | |
5eb970a4 | 95 | return (*this); |
13f28255 | 96 | } |
97 | ||
98 | //________________________________________________________________________________________ | |
b2028424 | 99 | const char* AliRsnFunction::GetName() const |
13f28255 | 100 | { |
5eb970a4 | 101 | // |
102 | // Defines the name of this object according to | |
103 | // the function type and binning | |
104 | // | |
13f28255 | 105 | |
b2028424 | 106 | TString name(""); |
e0baff8c | 107 | |
b2028424 | 108 | TObjArrayIter next(&fAxisList); |
109 | AliRsnFunctionAxis *axis = 0; | |
13f28255 | 110 | |
4fbb2459 | 111 | while ((axis = (AliRsnFunctionAxis*)next())) { |
b2028424 | 112 | if (name.Length() > 1) name += '_'; |
113 | name += axis->GetName(); | |
13f28255 | 114 | } |
13f28255 | 115 | |
b2028424 | 116 | return name.Data(); |
5eb970a4 | 117 | } |
118 | ||
b2028424 | 119 | //________________________________________________________________________________________ |
4fbb2459 | 120 | void AliRsnFunction::AddAxis(AliRsnFunctionAxis *const axis) |
5eb970a4 | 121 | { |
b2028424 | 122 | Int_t size = fAxisList.GetEntries(); |
eb079724 | 123 | if (size >= 3 && fUseTH1) |
124 | { | |
125 | AliWarning("A TH1-type output cannot add more than 3 axes: switching to THnSparse -- THIS COULD CAUSE VERY LARGE FILES!!!"); | |
126 | fUseTH1 = kFALSE; | |
127 | } | |
4fbb2459 | 128 | new(fAxisList[size]) AliRsnFunctionAxis(*axis); |
13f28255 | 129 | } |
130 | ||
131 | //________________________________________________________________________________________ | |
eb079724 | 132 | TH1* AliRsnFunction::CreateHistogram(const char *histoName, const char *histoTitle) |
13f28255 | 133 | { |
5eb970a4 | 134 | // |
135 | // Creates and returns the histogram defined using | |
136 | // arguments fo name and title, and the first histoDef for binning. | |
137 | // Variable-sized histogram binning is always called, due to use of histoDef, | |
138 | // even if the bins are equal, since they are defined in this class. | |
139 | // Eventually present histoDef's in other slots of array (1, 2) are ignored. | |
eb079724 | 140 | // |
141 | // This version produces a THnSparseD. | |
5eb970a4 | 142 | // |
13f28255 | 143 | |
eb079724 | 144 | fSize = fAxisList.GetEntries(); |
145 | if (!fSize) { | |
146 | AliError("No axes defined"); | |
147 | return 0x0; | |
148 | } | |
149 | else if (fSize < 1 || fSize > 3) | |
150 | { | |
151 | AliError("Too few or too many axes defined"); | |
152 | return 0x0; | |
153 | } | |
154 | ||
155 | Int_t *nbins = new Int_t [fSize]; | |
156 | Double_t *min = new Double_t[fSize]; | |
157 | Double_t *max = new Double_t[fSize]; | |
158 | ||
159 | // retrieve binnings for main and secondary axes | |
160 | AliRsnFunctionAxis *fcnAxis = 0; | |
161 | for (Int_t i = 0; i < fSize; i++) { | |
162 | fcnAxis = (AliRsnFunctionAxis*)fAxisList.At(i); | |
163 | if (!fcnAxis) { | |
164 | nbins[i] = 0; | |
165 | min[i] = 0.0; | |
166 | max[i] = 0.0; | |
167 | AliError("Empty axis"); | |
168 | continue; | |
169 | } | |
170 | nbins[i] = fcnAxis->GetNBins(); | |
171 | min[i] = fcnAxis->GetMin(); | |
172 | max[i] = fcnAxis->GetMax(); | |
173 | } | |
174 | ||
175 | // create histogram depending on the number of axes | |
176 | switch (fSize) | |
177 | { | |
178 | case 1: | |
179 | fH1 = new TH1D(histoName, histoTitle, nbins[0], min[0], max[0]); | |
180 | break; | |
181 | case 2: | |
182 | fH1 = new TH2D(histoName, histoTitle, nbins[0], min[0], max[0], nbins[1], min[1], max[1]); | |
183 | break; | |
184 | case 3: | |
185 | fH1 = new TH3D(histoName, histoTitle, nbins[0], min[0], max[0], nbins[1], min[1], max[1], nbins[2], min[2], max[2]); | |
186 | break; | |
187 | } | |
188 | fH1->Sumw2(); | |
189 | ||
190 | return fH1; | |
191 | } | |
192 | ||
193 | //________________________________________________________________________________________ | |
194 | THnSparseD* AliRsnFunction::CreateHistogramSparse(const char *histoName, const char *histoTitle) | |
195 | { | |
196 | // | |
197 | // Creates and returns the histogram defined using | |
198 | // arguments fo name and title, and the first histoDef for binning. | |
199 | // Variable-sized histogram binning is always called, due to use of histoDef, | |
200 | // even if the bins are equal, since they are defined in this class. | |
201 | // Eventually present histoDef's in other slots of array (1, 2) are ignored. | |
202 | // | |
203 | // This version produces a THnSparseD. | |
204 | // | |
205 | ||
206 | fSize = fAxisList.GetEntries(); | |
207 | if (!fSize) { | |
b2028424 | 208 | AliError("No axes defined"); |
209 | return 0x0; | |
210 | } | |
211 | ||
eb079724 | 212 | Int_t *nbins = new Int_t [fSize]; |
213 | Double_t *min = new Double_t[fSize]; | |
214 | Double_t *max = new Double_t[fSize]; | |
5eb970a4 | 215 | |
216 | // retrieve binnings for main and secondary axes | |
b2028424 | 217 | AliRsnFunctionAxis *fcnAxis = 0; |
eb079724 | 218 | for (Int_t i = 0; i < fSize; i++) { |
b2028424 | 219 | fcnAxis = (AliRsnFunctionAxis*)fAxisList.At(i); |
220 | if (!fcnAxis) { | |
221 | nbins[i] = 0; | |
eb079724 | 222 | min[i] = 0.0; |
223 | max[i] = 0.0; | |
b2028424 | 224 | AliError("Empty axis"); |
225 | continue; | |
5eb970a4 | 226 | } |
b2028424 | 227 | nbins[i] = fcnAxis->GetNBins(); |
eb079724 | 228 | min[i] = fcnAxis->GetMin(); |
229 | max[i] = fcnAxis->GetMax(); | |
230 | } | |
231 | ||
232 | Int_t size = fAxisList.GetEntries(); | |
233 | if (!size) { | |
234 | AliError("No axes defined"); | |
235 | return 0x0; | |
5eb970a4 | 236 | } |
8a22fe6f | 237 | |
b2028424 | 238 | // create histogram |
eb079724 | 239 | fHSparse = new THnSparseD(histoName, histoTitle, size, nbins, min, max); |
240 | fHSparse->Sumw2(); | |
241 | ||
242 | // clean heap | |
243 | delete [] nbins; | |
244 | delete [] min; | |
245 | delete [] max; | |
5eb970a4 | 246 | |
eb079724 | 247 | return fHSparse; |
5eb970a4 | 248 | } |
249 | ||
eb079724 | 250 | |
5eb970a4 | 251 | //________________________________________________________________________________________ |
252 | Bool_t AliRsnFunction::Fill() | |
253 | { | |
254 | // | |
255 | // Fill function histogram with values computed from given input object. | |
256 | // | |
b2028424 | 257 | |
5eb970a4 | 258 | AliDebug(AliLog::kDebug +2,"->"); |
259 | ||
eb079724 | 260 | Int_t i; |
261 | Double_t *values = new Double_t[fSize]; | |
b2028424 | 262 | |
263 | AliRsnFunctionAxis *fcnAxis = 0; | |
eb079724 | 264 | for (i = 0; i < fSize; i++) { |
b2028424 | 265 | fcnAxis = (AliRsnFunctionAxis*)fAxisList.At(i); |
266 | if (!fcnAxis) { | |
267 | values[i] = 0.0; | |
268 | continue; | |
269 | } | |
4fbb2459 | 270 | switch (fcnAxis->GetAxisObject()) { |
271 | case AliRsnFunctionAxis::kParticle: | |
272 | values[i] = fcnAxis->Eval(fTrack); | |
273 | break; | |
274 | case AliRsnFunctionAxis::kPair: | |
275 | values[i] = fcnAxis->Eval(fPair, fPairDef); | |
276 | break; | |
277 | case AliRsnFunctionAxis::kEvent: | |
278 | values[i] = fcnAxis->Eval(fEvent); | |
279 | break; | |
280 | default: | |
281 | values[i] = 0.0; | |
b2028424 | 282 | } |
5eb970a4 | 283 | } |
eb079724 | 284 | |
285 | // fill histogram | |
286 | if (fUseTH1) | |
287 | { | |
288 | // check presence of output histogram | |
289 | if (!fH1) { | |
290 | AliError("Required a TH1 whish is not initialized"); | |
291 | return kFALSE; | |
292 | } | |
293 | ||
294 | // fill according to dimensions | |
295 | switch (fSize) | |
296 | { | |
297 | case 1: | |
298 | { | |
299 | TH1D *h1 = (TH1D*)fH1; | |
300 | h1->Fill(values[0]); | |
301 | } | |
302 | break; | |
303 | case 2: | |
304 | { | |
305 | TH2D *h2 = (TH2D*)fH1; | |
306 | h2->Fill(values[0], values[1]); | |
307 | } | |
308 | break; | |
309 | case 3: | |
310 | { | |
311 | TH3D *h3 = (TH3D*)fH1; | |
312 | h3->Fill(values[0], values[1], values[2]); | |
313 | } | |
314 | break; | |
315 | default: | |
316 | AliError(Form("Wrong size : %d", fSize)); | |
317 | return kFALSE; | |
318 | } | |
319 | } | |
320 | else | |
321 | { | |
322 | // check presence of output histogram | |
323 | if (!fHSparse) { | |
324 | AliError("Required a THnSparseD whish is not initialized"); | |
325 | return kFALSE; | |
326 | } | |
327 | ||
328 | fHSparse->Fill(values); | |
5eb970a4 | 329 | } |
eb079724 | 330 | |
331 | delete [] values; | |
e0baff8c | 332 | |
5eb970a4 | 333 | AliDebug(AliLog::kDebug +2,"->"); |
334 | return kTRUE; | |
13f28255 | 335 | } |