G4DNACrossSectionDataSet.cc

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00025 //
00026 //
00027 
00028 // $Id$
00029 //
00030 // Author: Riccardo Capra <capra@ge.infn.it>
00031 // Code review by MGP October 2007: removed inheritance from concrete class
00032 //                                  more improvements needed
00033 //
00034 // History:
00035 // -----------
00036 // 30 Jun 2005  RC           Created
00037 // 14 Oct 2007  MGP          Removed inheritance from concrete class G4ShellEMDataSet
00038 //
00039 // 15 Jul 2009   N.A.Karakatsanis
00040 //
00041 //                           - LoadNonLogData method was created to load only the non-logarithmic data from G4EMLOW
00042 //                             dataset. It is essentially performing the data loading operations as in the past.
00043 //
00044 //                           - LoadData method was revised in order to calculate the logarithmic values of the data
00045 //                             It retrieves the data values from the G4EMLOW data files but, then, calculates the
00046 //                             respective log values and loads them to seperate data structures. 
00047 //
00048 //                           - SetLogEnergiesData method was cretaed to set logarithmic values to G4 data vectors.
00049 //                             The EM data sets, initialized this way, contain both non-log and log values.
00050 //                             These initialized data sets can enhance the computing performance of data interpolation
00051 //                             operations
00052 //
00053 //
00054 // -------------------------------------------------------------------
00055 
00056 
00057 #include "G4DNACrossSectionDataSet.hh"
00058 #include "G4VDataSetAlgorithm.hh"
00059 #include "G4EMDataSet.hh"
00060 #include <vector>
00061 #include <fstream>
00062 #include <sstream>
00063 
00064 
00065 G4DNACrossSectionDataSet::G4DNACrossSectionDataSet(G4VDataSetAlgorithm* argAlgorithm, 
00066                                                    G4double argUnitEnergies, 
00067                                                    G4double argUnitData)
00068   :
00069    algorithm(argAlgorithm), unitEnergies(argUnitEnergies), unitData(argUnitData)
00070 {
00071   z = 0;
00072 
00073 }
00074 
00075 
00076 G4DNACrossSectionDataSet::~G4DNACrossSectionDataSet()
00077 {
00078   CleanUpComponents();
00079  
00080   if (algorithm)
00081     delete algorithm;
00082 }
00083 
00084 G4bool G4DNACrossSectionDataSet::LoadData(const G4String & argFileName)
00085 {
00086   CleanUpComponents();
00087 
00088   G4String fullFileName(FullFileName(argFileName));
00089   std::ifstream in(fullFileName, std::ifstream::binary|std::ifstream::in);
00090 
00091   if (!in.is_open())
00092     {
00093       G4String message("Data file \"");
00094       message+=fullFileName;
00095       message+="\" not found";
00096       G4Exception("G4DNACrossSectionDataSet::LoadData","em0003",
00097                       FatalException,message);
00098       return false;
00099     }
00100 
00101   std::vector<G4DataVector *> columns;
00102   std::vector<G4DataVector *> log_columns;
00103 
00104   std::stringstream *stream(new std::stringstream);
00105   char c;
00106   G4bool comment(false);
00107   G4bool space(true);
00108   G4bool first(true);
00109 
00110   try
00111     {
00112       while (!in.eof())
00113         {
00114           in.get(c);
00115    
00116           switch (c)
00117             {
00118             case '\r':
00119             case '\n':
00120               if (!first)
00121                 {
00122                   unsigned long i(0);
00123                   G4double value;
00124       
00125                   while (!stream->eof())
00126                     {
00127                       (*stream) >> value;
00128        
00129                       while (i>=columns.size())
00130                         {
00131                          columns.push_back(new G4DataVector);
00132                          log_columns.push_back(new G4DataVector);
00133                         }
00134       
00135                       columns[i]->push_back(value);
00136 
00137 // N. A. Karakatsanis
00138 // A condition is applied to check if negative or zero values are present in the dataset.
00139 // If yes, then a near-zero value is applied to allow the computation of the logarithmic value
00140 // If a value is zero, this simplification is acceptable
00141 // If a value is negative, then it is not acceptable and the data of the particular column of
00142 // logarithmic values should not be used by interpolation methods.
00143 //
00144 // Therefore, G4LogLogInterpolation and G4LinLogLogInterpolation should not be used if negative values are present.
00145 // Instead, G4LinInterpolation is safe in every case
00146 // SemiLogInterpolation is safe only if the energy columns are non-negative
00147 // G4LinLogInterpolation is safe only if the cross section data columns are non-negative
00148 
00149                       if (value <=0.) value = 1e-300;
00150                       log_columns[i]->push_back(std::log10(value));
00151        
00152                       i++;
00153                     }
00154       
00155                   delete stream;
00156                   stream=new std::stringstream;
00157                 }
00158      
00159               first=true;
00160               comment=false;
00161               space=true;
00162               break;
00163      
00164             case '#':
00165               comment=true;
00166               break;
00167      
00168             case '\t':
00169               c=' ';
00170             case ' ':
00171               if (space)
00172                 break;
00173             default:
00174               if (comment)
00175                 break;
00176      
00177               if (c==' ')
00178                 space=true;
00179               else
00180                 {
00181                   if (space && (!first))
00182                     (*stream) << ' ';
00183       
00184                   first=false;
00185                   (*stream) << c;
00186                   space=false;
00187                 }
00188             }
00189         }
00190     }
00191   catch(const std::ios::failure &e)
00192     {
00193       // some implementations of STL could throw a "failture" exception
00194       // when read wants read characters after end of file
00195     }
00196  
00197   delete stream;
00198  
00199   std::vector<G4DataVector *>::size_type maxI(columns.size());
00200  
00201   if (maxI<2)
00202     {
00203       G4String message("Data file \"");
00204       message+=fullFileName;
00205       message+="\" should have at least two columns";
00206       G4Exception("G4DNACrossSectionDataSet::LoadData","em0005",
00207                       FatalException,message);
00208       return false;
00209     }
00210  
00211   std::vector<G4DataVector*>::size_type i(1);
00212   while (i<maxI)
00213     {
00214       G4DataVector::size_type maxJ(columns[i]->size());
00215 
00216       if (maxJ!=columns[0]->size())
00217         {
00218           G4String message("Data file \"");
00219           message+=fullFileName;
00220           message+="\" has lines with a different number of columns";
00221           G4Exception("G4DNACrossSectionDataSet::LoadData","em0005",
00222                       FatalException,message);
00223           return false;
00224         }
00225 
00226       G4DataVector::size_type j(0);
00227 
00228       G4DataVector *argEnergies=new G4DataVector;
00229       G4DataVector *argData=new G4DataVector;
00230       G4DataVector *argLogEnergies=new G4DataVector;
00231       G4DataVector *argLogData=new G4DataVector;
00232 
00233       while(j<maxJ)
00234         {
00235           argEnergies->push_back(columns[0]->operator[] (j)*GetUnitEnergies());
00236           argData->push_back(columns[i]->operator[] (j)*GetUnitData());
00237           argLogEnergies->push_back(log_columns[0]->operator[] (j) + std::log10(GetUnitEnergies()));
00238           argLogData->push_back(log_columns[i]->operator[] (j) + std::log10(GetUnitData()));
00239           j++;
00240         }
00241 
00242       AddComponent(new G4EMDataSet(i-1, argEnergies, argData, argLogEnergies, argLogData, GetAlgorithm()->Clone(), GetUnitEnergies(), GetUnitData()));
00243   
00244       i++;
00245     }
00246 
00247   i=maxI;
00248   while (i>0)
00249     {
00250       i--;
00251       delete columns[i];
00252       delete log_columns[i];
00253     }
00254 
00255   return true;
00256 }
00257 
00258 
00259 G4bool G4DNACrossSectionDataSet::LoadNonLogData(const G4String & argFileName)
00260 {
00261   CleanUpComponents();
00262 
00263   G4String fullFileName(FullFileName(argFileName));
00264   std::ifstream in(fullFileName, std::ifstream::binary|std::ifstream::in);
00265 
00266   if (!in.is_open())
00267     {
00268       G4String message("Data file \"");
00269       message+=fullFileName;
00270       message+="\" not found";
00271       G4Exception("G4DNACrossSectionDataSet::LoadData","em0003",
00272                       FatalException,message);
00273       return false;
00274     }
00275 
00276   std::vector<G4DataVector *> columns;
00277 
00278   std::stringstream *stream(new std::stringstream);
00279   char c;
00280   G4bool comment(false);
00281   G4bool space(true);
00282   G4bool first(true);
00283 
00284   try
00285     {
00286       while (!in.eof())
00287         {
00288           in.get(c);
00289    
00290           switch (c)
00291             {
00292             case '\r':
00293             case '\n':
00294               if (!first)
00295                 {
00296                   unsigned long i(0);
00297                   G4double value;
00298       
00299                   while (!stream->eof())
00300                     {
00301                       (*stream) >> value;
00302        
00303                       while (i>=columns.size())
00304                         {
00305                          columns.push_back(new G4DataVector);
00306                         }
00307       
00308                       columns[i]->push_back(value);
00309        
00310                       i++;
00311                     }
00312       
00313                   delete stream;
00314                   stream=new std::stringstream;
00315                 }
00316      
00317               first=true;
00318               comment=false;
00319               space=true;
00320               break;
00321      
00322             case '#':
00323               comment=true;
00324               break;
00325      
00326             case '\t':
00327               c=' ';
00328             case ' ':
00329               if (space)
00330                 break;
00331             default:
00332               if (comment)
00333                 break;
00334      
00335               if (c==' ')
00336                 space=true;
00337               else
00338                 {
00339                   if (space && (!first))
00340                     (*stream) << ' ';
00341       
00342                   first=false;
00343                   (*stream) << c;
00344                   space=false;
00345                 }
00346             }
00347         }
00348     }
00349   catch(const std::ios::failure &e)
00350     {
00351       // some implementations of STL could throw a "failture" exception
00352       // when read wants read characters after end of file
00353     }
00354  
00355   delete stream;
00356  
00357   std::vector<G4DataVector *>::size_type maxI(columns.size());
00358  
00359   if (maxI<2)
00360     {
00361       G4String message("Data file \"");
00362       message+=fullFileName;
00363       message+="\" should have at least two columns";
00364       G4Exception("G4DNACrossSectionDataSet::LoadData","em0005",
00365                       FatalException,message);
00366       return false;
00367     }
00368  
00369   std::vector<G4DataVector*>::size_type i(1);
00370   while (i<maxI)
00371     {
00372       G4DataVector::size_type maxJ(columns[i]->size());
00373 
00374       if (maxJ!=columns[0]->size())
00375         {
00376           G4String message("Data file \"");
00377           message+=fullFileName;
00378           message+="\" has lines with a different number of columns.";
00379           G4Exception("G4DNACrossSectionDataSet::LoadData","em0005",
00380                       FatalException,message);
00381           return false;
00382         }
00383 
00384       G4DataVector::size_type j(0);
00385 
00386       G4DataVector *argEnergies=new G4DataVector;
00387       G4DataVector *argData=new G4DataVector;
00388 
00389       while(j<maxJ)
00390         {
00391           argEnergies->push_back(columns[0]->operator[] (j)*GetUnitEnergies());
00392           argData->push_back(columns[i]->operator[] (j)*GetUnitData());
00393           j++;
00394         }
00395 
00396       AddComponent(new G4EMDataSet(i-1, argEnergies, argData, GetAlgorithm()->Clone(), GetUnitEnergies(), GetUnitData()));
00397   
00398       i++;
00399     }
00400 
00401   i=maxI;
00402   while (i>0)
00403     {
00404       i--;
00405       delete columns[i];
00406     }
00407 
00408   return true;
00409 }
00410 
00411 
00412 G4bool G4DNACrossSectionDataSet::SaveData(const G4String & argFileName) const
00413 {
00414   const size_t n(NumberOfComponents());
00415  
00416   if (n==0)
00417     {
00418       G4Exception("G4DNACrossSectionDataSet::SaveData","em0005",
00419                       FatalException,"Expected at least one component");
00420 
00421       return false;
00422     }
00423  
00424   G4String fullFileName(FullFileName(argFileName));
00425   std::ofstream out(fullFileName);
00426 
00427   if (!out.is_open())
00428     {
00429       G4String message("Cannot open \"");
00430       message+=fullFileName;
00431       message+="\"";
00432       G4Exception("G4DNACrossSectionDataSet::SaveData","em0005",
00433                       FatalException,message);
00434       return false;
00435     }
00436  
00437   G4DataVector::const_iterator iEnergies(GetComponent(0)->GetEnergies(0).begin());
00438   G4DataVector::const_iterator iEnergiesEnd(GetComponent(0)->GetEnergies(0).end());
00439   G4DataVector::const_iterator * iData(new G4DataVector::const_iterator[n]);
00440  
00441   size_t k(n);
00442  
00443   while (k>0)
00444     {
00445       k--;
00446       iData[k]=GetComponent(k)->GetData(0).begin();
00447     }
00448  
00449   while (iEnergies!=iEnergiesEnd)
00450     {
00451       out.precision(10);
00452       out.width(15);
00453       out.setf(std::ofstream::left);
00454       out << ((*iEnergies)/GetUnitEnergies());
00455   
00456       k=0;
00457   
00458       while (k<n)
00459         {
00460           out << ' ';
00461           out.precision(10);
00462           out.width(15);
00463           out.setf(std::ofstream::left);
00464           out << ((*(iData[k]))/GetUnitData());
00465 
00466           iData[k]++;
00467           k++;
00468         }
00469   
00470       out << std::endl;
00471   
00472       iEnergies++;
00473     }
00474  
00475   delete[] iData;
00476 
00477   return true;
00478 }
00479 
00480 
00481 G4String G4DNACrossSectionDataSet::FullFileName(const G4String& argFileName) const
00482 {
00483   char* path = getenv("G4LEDATA");
00484   if (!path)
00485   {
00486       G4Exception("G4DNACrossSectionDataSet::FullFileName","em0006",
00487                       FatalException,"G4LEDATA environment variable not set.");
00488       
00489       return "";
00490   }
00491   
00492   std::ostringstream fullFileName;
00493  
00494   fullFileName << path << "/" << argFileName << ".dat";
00495                       
00496   return G4String(fullFileName.str().c_str());
00497 }
00498 
00499 
00500 G4double G4DNACrossSectionDataSet::FindValue(G4double argEnergy, G4int /* argComponentId */) const
00501 {
00502   // Returns the sum over the shells corresponding to e
00503   G4double value = 0.;
00504 
00505   std::vector<G4VEMDataSet *>::const_iterator i(components.begin());
00506   std::vector<G4VEMDataSet *>::const_iterator end(components.end());
00507 
00508   while (i!=end)
00509     {
00510       value+=(*i)->FindValue(argEnergy);
00511       i++;
00512     }
00513 
00514   return value;
00515 }
00516 
00517 
00518 void G4DNACrossSectionDataSet::PrintData(void) const
00519 {
00520   const size_t n(NumberOfComponents());
00521 
00522   G4cout << "The data set has " << n << " components" << G4endl;
00523   G4cout << G4endl;
00524  
00525   size_t i(0);
00526  
00527   while (i<n)
00528     {
00529       G4cout << "--- Component " << i << " ---" << G4endl;
00530       GetComponent(i)->PrintData();
00531       i++;
00532     }
00533 }
00534 
00535 
00536 void G4DNACrossSectionDataSet::SetEnergiesData(G4DataVector* argEnergies, 
00537                                          G4DataVector* argData, 
00538                                          G4int argComponentId)
00539 {
00540   G4VEMDataSet * component(components[argComponentId]);
00541  
00542   if (component)
00543     {
00544       component->SetEnergiesData(argEnergies, argData, 0);
00545       return;
00546     }
00547 
00548   std::ostringstream message;
00549   message << "Component " << argComponentId << " not found";
00550  
00551   G4Exception("G4DNACrossSectionDataSet::SetEnergiesData","em0005",
00552                  FatalException,message.str().c_str());
00553   
00554 }
00555 
00556 
00557 void G4DNACrossSectionDataSet::SetLogEnergiesData(G4DataVector* argEnergies, 
00558                                          G4DataVector* argData,
00559                                          G4DataVector* argLogEnergies,
00560                                          G4DataVector* argLogData, 
00561                                          G4int argComponentId)
00562 {
00563   G4VEMDataSet * component(components[argComponentId]);
00564  
00565   if (component)
00566     {
00567       component->SetLogEnergiesData(argEnergies, argData, argLogEnergies, argLogData, 0);
00568       return;
00569     }
00570 
00571   std::ostringstream message;
00572   message << "Component " << argComponentId << " not found";
00573  
00574   G4Exception("G4DNACrossSectionDataSet::SetLogEnergiesData","em0005",
00575                  FatalException,message.str().c_str());
00576 
00577 }
00578 
00579 
00580 void G4DNACrossSectionDataSet::CleanUpComponents()
00581 {
00582   while (!components.empty())
00583     {
00584       if (components.back()) delete components.back();
00585       components.pop_back();
00586     }
00587 }
00588 
00589 

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