PWG3/hfe/AliHFEvarManager.cxx

   1 /**************************************************************************
   2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3 *                                                                        *
   4 * Author: The ALICE Off-line Project.                                    *
   5 * Contributors are mentioned in the code where appropriate.              *
   6 *                                                                        *
   7 * Permission to use, copy, modify and distribute this software and its   *
   8 * documentation strictly for non-commercial purposes is hereby granted   *
   9 * without fee, provided that the above copyright notice appears in all   *
  10 * copies and that both the copyright notice and this permission notice   *
  11 * appear in the supporting documentation. The authors make no claims     *
  12 * about the suitability of this software for any purpose. It is          *
  13 * provided "as is" without express or implied warranty.                  *
  14 **************************************************************************/
  15 //
  16 // Class AliHFEvarManager:
  17 // Contains definition of the variables which are filled into the
  18 // Correction framework container. The class handles both AliCFContainer and
  19 // AliHFEcontainer.
  20 // Defining a new variable which has to be monitored can be done via the
  21 // function AddVariable. This function also defines a new dimension for the
  22 // particle container and appends it to the list of variables. For a new
  23 // track the function NewTrack caches the values to be filled into the
  24 // correction framework container. With FillContainer the specified
  25 // correction framework container is filled. The VarManager also handles
  26 // the filling of the correlation matrices
  27 //
  28 // Author:
  29 //   Markus Fasel <M.Fasel@gsi.de>
  30 //
  31 #include <TClass.h>
  32 #include <TH3.h>
  33 #include <TF3.h>
  34 #include <TMath.h>
  35 #include <THnSparse.h>
  36 #include <TString.h>
  37
  38 #include "AliCFContainer.h"
  39 #include "AliLog.h"
  40 #include "AliVParticle.h"
  41
  42 #include "AliHFEcontainer.h"
  43 #include "AliHFEsignalCuts.h"
  44 #include "AliHFEvarManager.h"
  45
  46 ClassImp(AliHFEvarManager)
  47 ClassImp(AliHFEvarManager::AliHFEvariable);
  48
  49 //____________________________________________________________
  50 AliHFEvarManager::AliHFEvarManager():
  51   TNamed(),
  52   fVariables(NULL),
  53   fContent(NULL),
  54   fContentMC(NULL),
  55   fWeightFactor(1.),
  56   fSignalTrack(kTRUE),
  57         fWeighting(kFALSE),
  58   fSignal(NULL),
  59         fWeightFactors(NULL),
  60         fWeightFactorsFunction(NULL)
  61 {
  62         //
  63         // Dummy constructor
  64   //
  65   SetOwner();
  66 }
  67
  68 //____________________________________________________________
  69 AliHFEvarManager::AliHFEvarManager(const Char_t *name):
  70   TNamed(name, ""),
  71   fVariables(NULL),
  72   fContent(NULL),
  73   fContentMC(NULL),
  74   fWeightFactor(1.),
  75   fSignalTrack(kTRUE),
  76         fWeighting(kFALSE),
  77   fSignal(NULL),
  78         fWeightFactors(NULL),
  79         fWeightFactorsFunction(NULL)
  80 {
  81         //
  82         // Default constructor
  83   //
  84   fVariables = new TObjArray;
  85   SetOwner();
  86 }
  87
  88 //____________________________________________________________
  89 AliHFEvarManager::AliHFEvarManager(const AliHFEvarManager &ref):
  90   TNamed(ref),
  91   fVariables(NULL),
  92   fContent(NULL),
  93   fContentMC(NULL),
  94   fWeightFactor(ref.fWeightFactor),
  95   fSignalTrack(ref.fSignalTrack),
  96         fWeighting(ref.fWeighting),
  97   fSignal(NULL),
  98         fWeightFactors(NULL),
  99         fWeightFactorsFunction(NULL)
 100 {
 101   //
 102   // Copy Constructor
 103   //
 104   ref.Copy(*this);
 105 }
 106
 107 //____________________________________________________________
 108 AliHFEvarManager &AliHFEvarManager::operator=(const AliHFEvarManager &ref){
 109   //
 110   // Assignment operator
 111   //
 112   if(&ref != this){
 113     this->~AliHFEvarManager();
 114     ref.Copy(*this);
 115   }
 116   return *this;
 117 }
 118
 119 //____________________________________________________________
 120 AliHFEvarManager::~AliHFEvarManager(){
 121         //
 122         // Destructor
 123         //
 124   if(IsOwner()){
 125     if(fVariables) delete fVariables;
 126   }
 127   if(fContent) delete[] fContent;
 128   if(fContentMC) delete[] fContentMC;
 129 }
 130
 131 //____________________________________________________________
 132 void AliHFEvarManager::Copy(TObject &o) const{
 133   //
 134   // Make Copy
 135   //
 136   AliHFEvarManager &target = dynamic_cast<AliHFEvarManager &>(o);
 137   target.fVariables = fVariables;
 138   target.fContent = new Double_t[sizeof(fContent)/sizeof(Double_t)];
 139   target.fContentMC = new Double_t[sizeof(fContentMC)/sizeof(Double_t)];
 140   target.fWeightFactor = fWeightFactor;
 141   target.fSignalTrack = fSignalTrack;
 142         target.fWeighting = fWeighting;
 143   target.fSignal = fSignal;
 144         target.fWeightFactors = fWeightFactors;
 145   target.fWeightFactorsFunction = fWeightFactorsFunction;
 146   target.SetOwner(kFALSE);
 147 }
 148
 149 //____________________________________________________________
 150 void AliHFEvarManager::AddVariable(TString name){
 151   //
 152   // Add new variable to the var manager
 153   // Value derived via GetValue()
 154   //
 155    AliDebug(1, Form("Var Name: %s", name.Data()));
 156
 157   if(!name.CompareTo("pt"))
 158     fVariables->AddLast(new AliHFEvariable("pt", "pt", kPt, 44, 0.1, 20, kTRUE));
 159   else if(!name.CompareTo("eta"))
 160     fVariables->AddLast(new AliHFEvariable("eta", "eta", kEta, 8, -0.8, 0.8));
 161   else if(!name.CompareTo("phi"))
 162     fVariables->AddLast(new AliHFEvariable("phi", "phi", kPhi, 18, -0, 2*TMath::Pi()));
 163   else if(!name.CompareTo("charge"))
 164     fVariables->AddLast(new AliHFEvariable("charge", "charge", kCharge, 2, -1.1, 1.1));
 165   else if(!name.CompareTo("source"))
 166     fVariables->AddLast(new AliHFEvariable("source", "source", kSource, 4, 0, 4));
 167   else if(!name.CompareTo("centrality"))
 168     fVariables->AddLast(new AliHFEvariable("centrality", "centrality", kCentrality, 20, 0.0, 100.0));
 169   else if(!name.CompareTo("species"))
 170     fVariables->AddLast(new AliHFEvariable("species", "species", kSpecies, 6, -1, 5));
 171
 172   // More to come ...
 173 }
 174
 175 //____________________________________________________________
 176 void AliHFEvarManager::DefineVariables(AliHFEcontainer *cont){
 177         //
 178         // Define Variables
 179         //
 180   Int_t nVars = fVariables->GetEntriesFast();
 181   cont->SetNumberOfVariables(nVars);
 182   TIter vars(fVariables);
 183   AliHFEvariable *var;
 184   Int_t counter = 0;
 185   while((var = dynamic_cast<AliHFEvariable *>(vars()))){
 186     cont->SetVariableName(counter, var->GetName());
 187     if(var->IsLogarithmic())
 188       cont->MakeLogarithmicBinning(counter, var->GetNumberOfBins(), var->GetMinimum(), var->GetMaximum());
 189     else
 190       cont->MakeLinearBinning(counter, var->GetNumberOfBins(), var->GetMinimum(), var->GetMaximum());
 191     counter++;
 192   }
 193         fContent = new Double_t[nVars];
 194   memset(fContent, 0, sizeof(Double_t) * nVars);
 195   fContentMC = new Double_t[nVars];
 196   memset(fContentMC, 0, sizeof(Double_t) * nVars);
 197 }
 198
 199 //____________________________________________________________
 200 void AliHFEvarManager::NewTrack(AliVParticle *recTrack, AliVParticle *mcTrack, Float_t centrality, Int_t aprioriPID, Bool_t signal){
 201   //
 202   // Cache information for new track pair
 203   //
 204   AliDebug(1, "Filling new Track");
 205   fSignalTrack = signal;
 206   FillArray(recTrack, fContent, centrality, aprioriPID);
 207   if(mcTrack) FillArray(mcTrack, fContentMC, centrality, aprioriPID);
 208   if(fWeighting){
 209     Int_t indexpt = -1, indexeta = -1, indexphi = -1, counter = 0;
 210     AliHFEvariable *var = NULL;
 211     TIter vars(fVariables);
 212     while((var = dynamic_cast<AliHFEvariable *>(vars()))){
 213       switch(var->GetVarCode()){
 214         case kPt:   indexpt = counter;  break;
 215         case kEta:  indexeta = counter; break;
 216         case kPhi:  indexphi = counter; break;
 217       };
 218       if(indexpt >= 0 && indexeta >= 0 && indexphi >= 0) // all dimensions found
 219         break;
 220       counter++;
 221     }
 222     if(indexpt >= 0 && indexeta >= 0 && indexphi >= 0)
 223       fWeightFactor = FindWeight(fContent[indexpt], fContent[indexeta], fContent[indexphi]);
 224   }
 225 }
 226
 227 //____________________________________________________________
 228 Double_t AliHFEvarManager::GetValue(AliVParticle *track, UInt_t code, Float_t centrality, Int_t aprioriPID) const {
 229   //
 230   // Definition of the variables
 231   //
 232   if(!track) return 0.;
 233   Double_t value = 0.;
 234   switch(code){
 235     case kPt:       value = track->Pt();  break;
 236     case kEta:      value = track->Eta(); break;
 237     case kPhi:      value = track->Phi(); break;
 238     case kCharge:{
 239       value = track->Charge();
 240       if(TString(track->IsA()->GetName()).Contains("MC")) value /= 3;
 241       break;
 242     }
 243     case kSource:{
 244       if(fSignal){
 245               if(fSignal->IsCharmElectron(track)) value = 0;
 246               else if(fSignal->IsBeautyElectron(track)) value = 1;
 247               else if(fSignal->IsGammaElectron(track)) value = 2;
 248               else value = 3;
 249       }
 250       break;
 251     }
 252     case kSpecies:  value = aprioriPID; break;
 253     case kCentrality:  value = centrality; break;
 254   };
 255   return value;
 256 }
 257
 258 //____________________________________________________________
 259 void AliHFEvarManager::FillArray(AliVParticle *track, Double_t* container, Float_t centrality, Int_t aprioriPID) const{
 260         //
 261         // Fill array with variables
 262         //
 263   TIter vars(fVariables);
 264   AliHFEvariable *var = NULL;
 265   Int_t counter = 0;
 266   while((var = dynamic_cast<AliHFEvariable *>(vars())))
 267     container[counter++] = GetValue(track , var->GetVarCode(), centrality, aprioriPID);
 268 }
 269
 270 //____________________________________________________________
 271 void AliHFEvarManager::FillContainer(AliCFContainer *cont, Int_t step, Bool_t useMC) const{
 272         //
 273         // Fill CF container with defined content
 274         //
 275
 276         // Do reweighting if necessary
 277   Double_t *content = fContent;
 278   if(useMC) content = fContentMC;
 279         cont->Fill(content, step, fWeightFactor);
 280 }
 281
 282 //____________________________________________________________
 283 void AliHFEvarManager::FillContainer(AliHFEcontainer *cont, const Char_t *contname, UInt_t step, Bool_t useMC, Double_t externalWeight) const {
 284         //
 285         // Fill CF container with defined content
 286         //
 287
 288   // Do reweighting if necessary
 289   Double_t *content = fContent;
 290   if(useMC) content = fContentMC;
 291         cont->FillCFContainer(contname, step, content, fWeightFactor * externalWeight);
 292 }
 293
 294 //____________________________________________________________
 295 void AliHFEvarManager::FillContainerStepname(AliHFEcontainer *cont, const Char_t *contname, const Char_t *step, Bool_t useMC, Double_t externalWeight) const {
 296         //
 297         // Fill CF container with defined content
 298         //
 299
 300   // Do reweighting if necessary
 301   Double_t *content = fContent;
 302   if(useMC) content = fContentMC;
 303         cont->FillCFContainerStepname(contname, step, content, fWeightFactor * externalWeight);
 304 }
 305
 306 //____________________________________________________________
 307 void AliHFEvarManager::FillCorrelationMatrix(THnSparseF *matrix) const {
 308         //
 309         // Fill Correlation Matrix
 310         //
 311
 312         // Do reweighting if necessary
 313   Double_t content[10];
 314   memcpy(content, fContent, sizeof(Double_t) * 5);
 315   memcpy(&content[5], fContentMC, sizeof(Double_t) * 5);
 316         matrix->Fill(content, fWeightFactor);
 317 }
 318
 319 //_______________________________________________
 320 void AliHFEvarManager::SetWeightFactors(TH3F *weightFactors){
 321         //
 322         // Set the histos with the weights for the efficiency maps
 323         //
 324         fWeighting = kTRUE;
 325         fWeightFactors = weightFactors;
 326 }
 327
 328 //_______________________________________________
 329 void AliHFEvarManager::SetWeightFactorsFunction(TF3 *weightFactorsFunction){
 330         //
 331         // Set the histos with the weights for the efficiency maps
 332         //
 333         fWeighting = kTRUE;
 334         fWeightFactorsFunction = weightFactorsFunction;
 335 }
 336
 337 //_______________________________________________
 338 Double_t AliHFEvarManager::FindWeight(Double_t pt, Double_t eta, Double_t phi) const {
 339         //
 340         // Find the weight corresponding to pt eta and phi in the TH3D
 341         //
 342         Double_t weight = 1.0;
 343         if(fWeightFactors) {
 344
 345                 TAxis *ptaxis = fWeightFactors->GetXaxis();
 346                 TAxis *etaaxis = fWeightFactors->GetYaxis();
 347                 TAxis *phiaxis = fWeightFactors->GetZaxis();
 348
 349                 Int_t ptbin = ptaxis->FindBin(pt);
 350                 Int_t etabin = etaaxis->FindBin(eta);
 351                 Int_t phibin = phiaxis->FindBin(phi);
 352
 353
 354                 weight = fWeightFactors->GetBinContent(ptbin,etabin,phibin);
 355         }
 356         else if(fWeightFactorsFunction) {
 357
 358                 weight = fWeightFactorsFunction->Eval(pt,eta,phi);
 359
 360         }
 361
 362         AliDebug(2, Form("pt %f, eta %f, phi %f, weight %f",pt,eta,phi,weight));
 363
 364         return weight;
 365 }
 366
 367 //_______________________________________________
 368 AliHFEvarManager::AliHFEvariable::AliHFEvariable():
 369     TNamed()
 370   , fCode(0)
 371   , fNBins(0)
 372   , fMin(0)
 373   , fMax(0)
 374   , fIsLogarithmic(kFALSE)
 375 {
 376   //
 377   // Dummy constructor
 378   //
 379 }
 380
 381 //_______________________________________________
 382 AliHFEvarManager::AliHFEvariable::AliHFEvariable(const Char_t *name, const Char_t *title, UInt_t code, UInt_t nBins, Double_t min, Double_t max, Bool_t isLogarithmic):
 383     TNamed(name, title)
 384   , fCode(code)
 385   , fNBins(nBins)
 386   , fMin(min)
 387   , fMax(max)
 388   , fIsLogarithmic(isLogarithmic)
 389 {
 390   //
 391   // Default constructor
 392   //
 393 }
 394
 395 //_______________________________________________
 396 AliHFEvarManager::AliHFEvariable::AliHFEvariable(const AliHFEvarManager::AliHFEvariable &ref):
 397     TNamed(ref)
 398   , fCode(ref.fCode)
 399   , fNBins(ref.fNBins)
 400   , fMin(ref.fMin)
 401   , fMax(ref.fMax)
 402   , fIsLogarithmic(ref.fIsLogarithmic)
 403 {
 404   //
 405   // Copy constructor
 406   //
 407 }
 408
 409 //_______________________________________________
 410 AliHFEvarManager::AliHFEvariable& AliHFEvarManager::AliHFEvariable::operator=(const AliHFEvarManager::AliHFEvariable &ref){
 411   //
 412   // Assignment operator
 413   //
 414
 415   if(&ref != this){
 416     TNamed::operator=(ref);
 417     fCode = ref.fCode;
 418     fNBins = ref.fNBins;
 419     fMax = ref.fMax;
 420     fMin = ref.fMin;
 421     fIsLogarithmic = ref.fIsLogarithmic;
 422   }
 423   return *this;
 424 }
 425