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26 // 26 //
>> 27 // $Id: G4DataSet.cc,v 1.4 2010-11-25 19:49:43 pia Exp $
>> 28 // GEANT4 tag $Name: geant4-09-04-patch-01 $
27 // 29 //
28 // Author: Maria Grazia Pia (Maria.Grazia.Pia@ 30 // Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
29 // 31 //
30 // History: 32 // History:
31 // ----------- 33 // -----------
32 // 31 Jul 2001 MGP Created 34 // 31 Jul 2001 MGP Created
33 // 31 Jul 2008 MGP Revised and rename 35 // 31 Jul 2008 MGP Revised and renamed to G4DataSet
34 // 36 //
35 // ------------------------------------------- 37 // -------------------------------------------------------------------
36 38
37 #include "G4DataSet.hh" 39 #include "G4DataSet.hh"
38 #include "G4IInterpolator.hh" 40 #include "G4IInterpolator.hh"
39 #include <fstream> 41 #include <fstream>
40 #include <sstream> 42 #include <sstream>
41 #include "G4Integrator.hh" 43 #include "G4Integrator.hh"
42 #include "Randomize.hh" 44 #include "Randomize.hh"
43 #include "G4LinInterpolation.hh" 45 #include "G4LinInterpolation.hh"
44 46
45 47
46 G4DataSet::G4DataSet(G4int Z, 48 G4DataSet::G4DataSet(G4int Z,
47 G4IInterpolator* algo, 49 G4IInterpolator* algo,
48 G4double xUnit, 50 G4double xUnit,
49 G4double yUnit, 51 G4double yUnit,
50 G4bool random): 52 G4bool random):
51 z(Z), 53 z(Z),
52 energies(0), 54 energies(0),
53 data(0), 55 data(0),
54 algorithm(algo), 56 algorithm(algo),
55 unitEnergies(xUnit), 57 unitEnergies(xUnit),
56 unitData(yUnit), 58 unitData(yUnit),
57 pdf(0), 59 pdf(0),
58 randomSet(random) 60 randomSet(random)
59 { 61 {
60 if (algorithm == 0) G4Exception("G4DataSet:: << 62 if (algorithm == 0) G4Exception("G4DataSet::G4DataSet - interpolation == 0");
61 "pii00000101", <<
62 FatalException, <<
63 "Interpolation == 0"); <<
64 if (randomSet) BuildPdf(); 63 if (randomSet) BuildPdf();
65 } 64 }
66 65
67 G4DataSet::G4DataSet(G4int argZ, 66 G4DataSet::G4DataSet(G4int argZ,
68 G4DataVector* dataX, 67 G4DataVector* dataX,
69 G4DataVector* dataY, 68 G4DataVector* dataY,
70 G4IInterpolator* algo, 69 G4IInterpolator* algo,
71 G4double xUnit, 70 G4double xUnit,
72 G4double yUnit, 71 G4double yUnit,
73 G4bool random): 72 G4bool random):
74 z(argZ), 73 z(argZ),
75 energies(dataX), 74 energies(dataX),
76 data(dataY), 75 data(dataY),
77 algorithm(algo), 76 algorithm(algo),
78 unitEnergies(xUnit), 77 unitEnergies(xUnit),
79 unitData(yUnit), 78 unitData(yUnit),
80 pdf(0), 79 pdf(0),
81 randomSet(random) 80 randomSet(random)
82 { 81 {
83 if (algorithm == 0) G4Exception("G4DataSet:: << 82 if (algorithm == 0) G4Exception("G4DataSet::G4DataSet - interpolation == 0");
84 "pii00000110", <<
85 FatalException, <<
86 "Interpolation == 0"); <<
87 83
88 if ((energies == 0) ^ (data == 0)) 84 if ((energies == 0) ^ (data == 0))
89 G4Exception("G4DataSet::G4DataSet", << 85 G4Exception("G4DataSet::G4DataSet - different size for energies and data (zero case)");
90 "pii00000111-", <<
91 FatalException, <<
92 "different size for energies and data (zer <<
93 86
94 if (energies == 0) return; 87 if (energies == 0) return;
95 88
96 if (energies->size() != data->size()) 89 if (energies->size() != data->size())
97 G4Exception("G4DataSet::G4DataSet", << 90 G4Exception("G4DataSet::G4DataSet - different size for energies and data");
98 "pii00000112", <<
99 FatalException, <<
100 "different size for energies and data"); <<
101 91
102 if (randomSet) BuildPdf(); 92 if (randomSet) BuildPdf();
103 } 93 }
104 94
105 G4DataSet::~G4DataSet() 95 G4DataSet::~G4DataSet()
106 { 96 {
107 delete algorithm; 97 delete algorithm;
108 if (energies) delete energies; 98 if (energies) delete energies;
109 if (data) delete data; 99 if (data) delete data;
110 if (pdf) delete pdf; 100 if (pdf) delete pdf;
111 } 101 }
112 102
113 G4double G4DataSet::FindValue(G4double energy, 103 G4double G4DataSet::FindValue(G4double energy, G4int /* componentId */) const
114 { 104 {
115 if (!energies) G4Exception("G4DataSet::FindV << 105 if (!energies) G4Exception("G4DataSet::FindValue - energies == 0");
116 "pii00000120", <<
117 FatalException, <<
118 "energies == 0"); <<
119 if (energies->empty()) return 0; 106 if (energies->empty()) return 0;
120 if (energy <= (*energies)[0]) return (*data) 107 if (energy <= (*energies)[0]) return (*data)[0];
121 108
122 std::size_t i = energies->size()-1; << 109 size_t i = energies->size()-1;
123 if (energy >= (*energies)[i]) return (*data) 110 if (energy >= (*energies)[i]) return (*data)[i];
124 111
125 G4double interpolated = algorithm->Calculate << 112 G4double interpolated = algorithm->Calculate(energy,FindLowerBound(energy),*energies,*data);
126 return interpolated; 113 return interpolated;
127 } 114 }
128 115
129 116
130 void G4DataSet::PrintData(void) const 117 void G4DataSet::PrintData(void) const
131 { 118 {
132 if (!energies) 119 if (!energies)
133 { 120 {
134 G4cout << "Data not available." << G4end 121 G4cout << "Data not available." << G4endl;
135 } 122 }
136 else 123 else
137 { 124 {
138 std::size_t size = energies->size(); << 125 size_t size = energies->size();
139 for (std::size_t i(0); i<size; i++) << 126 for (size_t i(0); i<size; i++)
140 { 127 {
141 G4cout << "Point: " << ((*energies)[i]/uni 128 G4cout << "Point: " << ((*energies)[i]/unitEnergies)
142 << " - Data value: " << ((*data)[i]/unitD 129 << " - Data value: " << ((*data)[i]/unitData);
143 if (pdf != 0) G4cout << " - PDF : " << (*p 130 if (pdf != 0) G4cout << " - PDF : " << (*pdf)[i];
144 G4cout << G4endl; 131 G4cout << G4endl;
145 } 132 }
146 } 133 }
147 } 134 }
148 135
149 136
150 void G4DataSet::SetEnergiesData(G4DataVector* 137 void G4DataSet::SetEnergiesData(G4DataVector* dataX,
151 G4DataVector* dataY, 138 G4DataVector* dataY,
152 G4int /* componentId */) 139 G4int /* componentId */)
153 { 140 {
154 if (energies) delete energies; 141 if (energies) delete energies;
155 energies = dataX; 142 energies = dataX;
156 143
157 if (data) delete data; 144 if (data) delete data;
158 data = dataY; 145 data = dataY;
159 146
160 if ((energies == 0) ^ (data==0)) 147 if ((energies == 0) ^ (data==0))
161 G4Exception("G4DataSet::SetEnergiesData", << 148 G4Exception("G4DataSet::SetEnergiesData - different size for energies and data (zero case)");
162 "pii00000130", <<
163 FatalException, <<
164 "different size for energies and data (zer <<
165 149
166 if (energies == 0) return; 150 if (energies == 0) return;
167 151
168 if (energies->size() != data->size()) 152 if (energies->size() != data->size())
169 G4Exception("G4DataSet::SetEnergiesData", << 153 G4Exception("G4DataSet::SetEnergiesData - different size for energies and data");
170 "pii00000131", <<
171 FatalException, <<
172 "different size for energies and data"); <<
173 } 154 }
174 155
175 G4bool G4DataSet::LoadData(const G4String& fil 156 G4bool G4DataSet::LoadData(const G4String& fileName)
176 { 157 {
177 // The file is organized into two columns: 158 // The file is organized into two columns:
178 // 1st column is the energy 159 // 1st column is the energy
179 // 2nd column is the corresponding value 160 // 2nd column is the corresponding value
180 // The file terminates with the pattern: -1 161 // The file terminates with the pattern: -1 -1
181 // -2 162 // -2 -2
182 163
183 G4String fullFileName(FullFileName(fileName) 164 G4String fullFileName(FullFileName(fileName));
184 std::ifstream in(fullFileName); 165 std::ifstream in(fullFileName);
185 166
186 if (!in.is_open()) 167 if (!in.is_open())
187 { 168 {
188 << 169 G4String message("G4DataSet::LoadData - data file \"");
189 std::ostringstream message; << 170 message += fullFileName;
190 message << "G4DataSet::LoadData - data f << 171 message += "\" not found";
191 << 172 G4Exception(message);
192 G4Exception("G4CompositeDataSet::LoadDat <<
193 "pii00000140", <<
194 FatalException, <<
195 message.str().c_str()); <<
196 } 173 }
197 174
198 G4DataVector* argEnergies=new G4DataVector; 175 G4DataVector* argEnergies=new G4DataVector;
199 G4DataVector* argData=new G4DataVector; 176 G4DataVector* argData=new G4DataVector;
200 177
201 G4double a; 178 G4double a;
202 bool energyColumn(true); 179 bool energyColumn(true);
203 180
204 do 181 do
205 { 182 {
206 in >> a; 183 in >> a;
207 184
208 if (a!=-1 && a!=-2) 185 if (a!=-1 && a!=-2)
209 { 186 {
210 if (energyColumn) 187 if (energyColumn)
211 { 188 {
212 // std::cout << fullFileName << ", a = 189 // std::cout << fullFileName << ", a = " << a <<std::endl;
213 argEnergies->push_back(a*unitEnergies) 190 argEnergies->push_back(a*unitEnergies);
214 } 191 }
215 else 192 else
216 argData->push_back(a*unitData); 193 argData->push_back(a*unitData);
217 energyColumn=(!energyColumn); 194 energyColumn=(!energyColumn);
218 } 195 }
219 } 196 }
220 while (a != -2); 197 while (a != -2);
221 198
222 SetEnergiesData(argEnergies, argData, 0); 199 SetEnergiesData(argEnergies, argData, 0);
223 if (randomSet) BuildPdf(); 200 if (randomSet) BuildPdf();
224 201
225 return true; 202 return true;
226 } 203 }
227 204
228 G4bool G4DataSet::SaveData(const G4String& nam 205 G4bool G4DataSet::SaveData(const G4String& name) const
229 { 206 {
230 // The file is organized into two columns: 207 // The file is organized into two columns:
231 // 1st column is the energy 208 // 1st column is the energy
232 // 2nd column is the corresponding value 209 // 2nd column is the corresponding value
233 // The file terminates with the pattern: -1 210 // The file terminates with the pattern: -1 -1
234 // -2 211 // -2 -2
235 212
236 G4String fullFileName(FullFileName(name)); 213 G4String fullFileName(FullFileName(name));
237 std::ofstream out(fullFileName); 214 std::ofstream out(fullFileName);
238 215
239 if (!out.is_open()) 216 if (!out.is_open())
240 { 217 {
241 << 218 G4String message("G4DataSet::SaveData - cannot open \"");
242 std::ostringstream message; << 219 message+=fullFileName;
243 message << "G4DataSet:: SaveData - canno << 220 message+="\"";
244 << 221 G4Exception(message);
245 G4Exception("G4CompositeDataSet::SaveDat <<
246 "pii00000150", <<
247 FatalException, <<
248 message.str().c_str()); <<
249 <<
250 } 222 }
251 223
252 out.precision(10); 224 out.precision(10);
253 out.width(15); 225 out.width(15);
254 out.setf(std::ofstream::left); 226 out.setf(std::ofstream::left);
255 227
256 if (energies!=0 && data!=0) 228 if (energies!=0 && data!=0)
257 { 229 {
258 G4DataVector::const_iterator i(energies- 230 G4DataVector::const_iterator i(energies->begin());
259 G4DataVector::const_iterator endI(energi 231 G4DataVector::const_iterator endI(energies->end());
260 G4DataVector::const_iterator j(data->beg 232 G4DataVector::const_iterator j(data->begin());
261 233
262 while (i!=endI) 234 while (i!=endI)
263 { 235 {
264 out.precision(10); 236 out.precision(10);
265 out.width(15); 237 out.width(15);
266 out.setf(std::ofstream::left); 238 out.setf(std::ofstream::left);
267 out << ((*i)/unitEnergies) << ' '; 239 out << ((*i)/unitEnergies) << ' ';
268 240
269 out.precision(10); 241 out.precision(10);
270 out.width(15); 242 out.width(15);
271 out.setf(std::ofstream::left); 243 out.setf(std::ofstream::left);
272 out << ((*j)/unitData) << std::endl; 244 out << ((*j)/unitData) << std::endl;
273 245
274 i++; 246 i++;
275 j++; 247 j++;
276 } 248 }
277 } 249 }
278 250
279 out.precision(10); 251 out.precision(10);
280 out.width(15); 252 out.width(15);
281 out.setf(std::ofstream::left); 253 out.setf(std::ofstream::left);
282 out << -1.f << ' '; 254 out << -1.f << ' ';
283 255
284 out.precision(10); 256 out.precision(10);
285 out.width(15); 257 out.width(15);
286 out.setf(std::ofstream::left); 258 out.setf(std::ofstream::left);
287 out << -1.f << std::endl; 259 out << -1.f << std::endl;
288 260
289 out.precision(10); 261 out.precision(10);
290 out.width(15); 262 out.width(15);
291 out.setf(std::ofstream::left); 263 out.setf(std::ofstream::left);
292 out << -2.f << ' '; 264 out << -2.f << ' ';
293 265
294 out.precision(10); 266 out.precision(10);
295 out.width(15); 267 out.width(15);
296 out.setf(std::ofstream::left); 268 out.setf(std::ofstream::left);
297 out << -2.f << std::endl; 269 out << -2.f << std::endl;
298 270
299 return true; 271 return true;
300 } 272 }
301 273
302 std::size_t G4DataSet::FindLowerBound(G4double << 274 size_t G4DataSet::FindLowerBound(G4double x) const
303 { 275 {
304 std::size_t lowerBound = 0; << 276 size_t lowerBound = 0;
305 std::size_t upperBound(energies->size() - 1) << 277 size_t upperBound(energies->size() - 1);
306 278
307 while (lowerBound <= upperBound) 279 while (lowerBound <= upperBound)
308 { 280 {
309 std::size_t midBin((lowerBound + upperBo << 281 size_t midBin((lowerBound + upperBound) / 2);
310 282
311 if (x < (*energies)[midBin]) upperBound 283 if (x < (*energies)[midBin]) upperBound = midBin - 1;
312 else lowerBound = midBin + 1; 284 else lowerBound = midBin + 1;
313 } 285 }
314 286
315 return upperBound; 287 return upperBound;
316 } 288 }
317 289
318 290
319 std::size_t G4DataSet::FindLowerBound(G4double << 291 size_t G4DataSet::FindLowerBound(G4double x, G4DataVector* values) const
320 { 292 {
321 std::size_t lowerBound = 0;; << 293 size_t lowerBound = 0;;
322 std::size_t upperBound(values->size() - 1); << 294 size_t upperBound(values->size() - 1);
323 295
324 while (lowerBound <= upperBound) 296 while (lowerBound <= upperBound)
325 { 297 {
326 std::size_t midBin((lowerBound + upperBo << 298 size_t midBin((lowerBound + upperBound) / 2);
327 299
328 if (x < (*values)[midBin]) upperBound = 300 if (x < (*values)[midBin]) upperBound = midBin - 1;
329 else lowerBound = midBin + 1; 301 else lowerBound = midBin + 1;
330 } 302 }
331 303
332 return upperBound; 304 return upperBound;
333 } 305 }
334 306
335 307
336 G4String G4DataSet::FullFileName(const G4Strin 308 G4String G4DataSet::FullFileName(const G4String& name) const
337 { 309 {
338 const char* path = G4FindDataDir("G4PIIDATA" << 310 char* path = getenv("G4PIIDATA");
339 if (!path) 311 if (!path)
340 G4Exception("G4DataSet::FullFileName", << 312 G4Exception("G4DataSet::FullFileName - G4PIIDATA environment variable not set");
341 "pii00000160", <<
342 FatalException, <<
343 "G4PIIDATA environment variable not set"); <<
344 313
345 std::ostringstream fullFileName; 314 std::ostringstream fullFileName;
346 fullFileName << path << '/' << name << z << 315 fullFileName << path << '/' << name << z << ".dat";
347 316
348 return G4String(fullFileName.str().c_str()); 317 return G4String(fullFileName.str().c_str());
349 } 318 }
350 319
351 320
352 void G4DataSet::BuildPdf() 321 void G4DataSet::BuildPdf()
353 { 322 {
354 pdf = new G4DataVector; 323 pdf = new G4DataVector;
355 G4Integrator <G4DataSet, G4double(G4DataSet: 324 G4Integrator <G4DataSet, G4double(G4DataSet::*)(G4double)> integrator;
356 325
357 std::size_t nData = data->size(); << 326 G4int nData = data->size();
358 pdf->push_back(0.); 327 pdf->push_back(0.);
359 328
360 // Integrate the data distribution 329 // Integrate the data distribution
361 std::size_t i; << 330 G4int i;
362 G4double totalSum = 0.; 331 G4double totalSum = 0.;
363 for (i=1; i<nData; i++) 332 for (i=1; i<nData; i++)
364 { 333 {
365 G4double xLow = (*energies)[i-1]; 334 G4double xLow = (*energies)[i-1];
366 G4double xHigh = (*energies)[i]; 335 G4double xHigh = (*energies)[i];
367 G4double sum = integrator.Legendre96(thi 336 G4double sum = integrator.Legendre96(this, &G4DataSet::IntegrationFunction, xLow, xHigh);
368 totalSum = totalSum + sum; 337 totalSum = totalSum + sum;
369 pdf->push_back(totalSum); 338 pdf->push_back(totalSum);
370 } 339 }
371 340
372 // Normalize to the last bin 341 // Normalize to the last bin
373 G4double tot = 0.; 342 G4double tot = 0.;
374 if (totalSum > 0.) tot = 1. / totalSum; 343 if (totalSum > 0.) tot = 1. / totalSum;
375 for (i=1; i<nData; i++) 344 for (i=1; i<nData; i++)
376 { 345 {
377 (*pdf)[i] = (*pdf)[i] * tot; 346 (*pdf)[i] = (*pdf)[i] * tot;
378 } 347 }
379 } 348 }
380 349
381 350
382 G4double G4DataSet::RandomSelect(G4int /* comp 351 G4double G4DataSet::RandomSelect(G4int /* componentId */) const
383 { 352 {
384 // Random select a X value according to the 353 // Random select a X value according to the cumulative probability distribution
385 // derived from the data 354 // derived from the data
386 355
387 if (!pdf) G4Exception("G4DataSet::RandomSele << 356 if (!pdf) G4Exception("G4DataSet::RandomSelect - PDF has not been created for this data set");
388 "pii00000170", <<
389 FatalException, <<
390 "PDF has not been created for this data <<
391 357
392 G4double value = 0.; 358 G4double value = 0.;
393 G4double x = G4UniformRand(); 359 G4double x = G4UniformRand();
394 360
395 // Locate the random value in the X vector b 361 // Locate the random value in the X vector based on the PDF
396 G4int bin = (G4int)FindLowerBound(x,pdf); << 362 size_t bin = FindLowerBound(x,pdf);
397 363
398 // Interpolate the PDF to calculate the X va 364 // Interpolate the PDF to calculate the X value:
399 // linear interpolation in the first bin (to 365 // linear interpolation in the first bin (to avoid problem with 0),
400 // interpolation with associated data set al 366 // interpolation with associated data set algorithm in other bins
401 367
402 G4LinInterpolation linearAlgo; 368 G4LinInterpolation linearAlgo;
403 if (bin == 0) value = linearAlgo.Calculate(x 369 if (bin == 0) value = linearAlgo.Calculate(x, bin, *pdf, *energies);
404 else value = algorithm->Calculate(x, bin, *p 370 else value = algorithm->Calculate(x, bin, *pdf, *energies);
405 371
406 // G4cout << x << " random bin "<< bin << " 372 // G4cout << x << " random bin "<< bin << " - " << value << G4endl;
407 return value; 373 return value;
408 } 374 }
409 375
410 G4double G4DataSet::IntegrationFunction(G4doub 376 G4double G4DataSet::IntegrationFunction(G4double x)
411 { 377 {
412 // This function is needed by G4Integrator t 378 // This function is needed by G4Integrator to calculate the integral of the data distribution
413 379
414 G4double y = 0; 380 G4double y = 0;
415 381
416 // Locate the random value in the X vector b 382 // Locate the random value in the X vector based on the PDF
417 G4int bin = (G4int)FindLowerBound(x); << 383 size_t bin = FindLowerBound(x);
418 384
419 // Interpolate to calculate the X value: 385 // Interpolate to calculate the X value:
420 // linear interpolation in the first bin (to 386 // linear interpolation in the first bin (to avoid problem with 0),
421 // interpolation with associated algorithm i 387 // interpolation with associated algorithm in other bins
422 388
423 G4LinInterpolation linearAlgo; 389 G4LinInterpolation linearAlgo;
424 390
425 if (bin == 0) y = linearAlgo.Calculate(x, bi 391 if (bin == 0) y = linearAlgo.Calculate(x, bin, *energies, *data);
426 else y = algorithm->Calculate(x, bin, *energ 392 else y = algorithm->Calculate(x, bin, *energies, *data);
427 393
428 return y; 394 return y;
429 } 395 }
430 396
431 397