CaloReadLCWeightsFile.cxx

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#include "CaloLocalHadCalib/CaloReadLCWeightsFile.h"
#include "CaloConditions/CaloLocalHadDefs.h"
#include "CaloUtils/CaloSamplingHelper.h"
#include "CaloIdentifier/CaloCell_ID.h"
#include "PathResolver/PathResolver.h"
#include "TFile.h"
#include "TList.h"
#include "TAxis.h"
#include "TProfile2D.h"
#include <iostream>
#include <sstream>
 
CaloReadLCWeightsFile::CaloReadLCWeightsFile(const std::string & name, 
                         ISvcLocator * pSvcLocator) : 
  AthAlgorithm(name,pSvcLocator) {
  declareProperty("LCWeightFileName",m_LCWeightFileName);
  declareProperty("CorrectionKey",m_key="HadWeights");
}
 
 
CaloReadLCWeightsFile::~CaloReadLCWeightsFile() {}
 
StatusCode CaloReadLCWeightsFile::initDataFromFile(const std::string& theLCWeightFileName,
                                                   CaloLocalHadCoeff& data)
{
  // Find the full path to filename:
  std::string file = PathResolver::find_file (theLCWeightFileName, "DATAPATH");
  ATH_MSG_INFO( "Reading file  " << file  );
 
  std::vector<int> isampmap(CaloSampling::Unknown,-1);
  unsigned int nAreas(0);
  std::vector<CaloLocalHadCoeff::LocalHadArea> theAreas;
  for (unsigned int iArea=0;iArea<CaloSampling::Unknown;iArea++) {
    CaloLocalHadCoeff::LocalHadArea theArea(CaloSamplingHelper::getSamplingName((CaloSampling::CaloSample)iArea).c_str(),0,3);
    theAreas.push_back(std::move(theArea));
  }
 
  for (int iread=0;iread<2;iread++) {
    // first parse to define Areas; second to fill all data
    TFile* theLCWeightFile = new TFile(file.c_str());
    if ( !theLCWeightFile ) {
      return StatusCode::FAILURE;
    }
    TList * theKeyList = theLCWeightFile->GetListOfKeys();
    while ( theKeyList->GetEntries() ) {
      TProfile2D * prof = (TProfile2D *)theLCWeightFile->Get(theKeyList->First()->GetTitle());
      // parse histogram title to find sampling and bins
      std::string sTitle(prof->GetTitle());
      // first the Sampling
      std::string key("_isamp_");
      size_t found = sTitle.find(key);
      if ( found == std::string::npos ) {
    ATH_MSG_ERROR( "Could not find key " << key << " in current histogram."  );
      }
      else {
    std::istringstream tstr(sTitle.substr(found+key.length()));
    int isamp(-1);
    tstr >> isamp;
    if ( isamp <= 0 || isamp >= CaloSampling::Unknown ) {
      ATH_MSG_ERROR( "Found invalid sampling " << isamp << " in current histogram."  );
    }
    else {
      // now the other dimensions
      bool allValid(true);
 
      std::vector<std::string> keys;
      keys.emplace_back("_iside_");
      keys.emplace_back("_ieta_");
      keys.emplace_back("_iphi_");
      
      std::vector<std::string> names;
      names.emplace_back("side");
      names.emplace_back("|eta|");
      names.emplace_back("phi");
      names.emplace_back(prof->GetXaxis()->GetTitle());
      names.emplace_back(prof->GetYaxis()->GetTitle());
      
      std::vector<int> types;
      types.push_back(CaloLocalHadDefs::DIM_EQUI);     
      types.push_back(CaloLocalHadDefs::DIM_EQUI);     
      types.push_back(CaloLocalHadDefs::DIM_EQUI);     
      types.push_back(CaloLocalHadDefs::DIM_LOG|CaloLocalHadDefs::DIM_EQUI);      
      types.push_back(CaloLocalHadDefs::DIM_LOG|CaloLocalHadDefs::DIM_EQUI);      
      
      std::vector<int> ibin(names.size(),-1);
      std::vector<double> rmin(names.size(),-1);
      std::vector<double> rmax(names.size(),-1);
      std::vector<int> nbin(names.size(),-1);
      unsigned int idim;
      
      for (idim=0;idim<keys.size();idim++) {
        found = sTitle.find(keys[idim]);
        if ( found == std::string::npos ) {
          ATH_MSG_ERROR( "Could not find key " << keys[idim] << " in current histogram."  );
          allValid = false;
        }
        else {
          char c;
          std::istringstream tstr(sTitle.substr(found+keys[idim].length()));
          tstr >> ibin[idim] >> c >> c >> rmin[idim] >> c >> rmax[idim] >> c >> nbin[idim];
          if ( ibin[idim] < 0 || ibin[idim] >= nbin[idim] ) {
        ATH_MSG_ERROR( "Found invalid bin number " << ibin[idim] << " not in valid range [0," << nbin[idim] << " in current histogram."  );
        allValid = false;
          }
        }
      }
      if ( allValid ) {
        // final 2 dimensions are from TProfile2D itself
        nbin[names.size()-2] = prof->GetNbinsX();
        rmin[names.size()-2] = prof->GetXaxis()->GetXmin();
        rmax[names.size()-2] = prof->GetXaxis()->GetXmax();
        nbin[names.size()-1] = prof->GetNbinsY();
        rmin[names.size()-1] = prof->GetYaxis()->GetXmin();
        rmax[names.size()-1] = prof->GetYaxis()->GetXmax();
        // book new area from the first histo found for current sampling
        if ( isampmap[isamp] < 0 ) {
          isampmap[isamp] = nAreas;
          nAreas++;
          for (idim = 0;idim<names.size();idim++) {
        CaloLocalHadCoeff::LocalHadDimension theDim(names[idim].c_str(),types[idim],nbin[idim],rmin[idim],rmax[idim]);
        theAreas[isamp].addDimension(theDim);
          }
        }
        else if ( iread == 1 ) {
          // now fill all data for current histogram
          TAxis * xax = prof->GetXaxis();
          TAxis * yax = prof->GetYaxis();
          for (ibin[names.size()-2]=0;ibin[names.size()-2]<prof->GetNbinsX();ibin[names.size()-2]++) {
        for (ibin[names.size()-1]=0;ibin[names.size()-1]<prof->GetNbinsY();ibin[names.size()-1]++) {
          float logEClus = xax->GetBinCenter(ibin[names.size()-2]+1);
          float logEDensCell = yax->GetBinCenter(ibin[names.size()-1]+1);
          int iBin = prof->FindBin(logEClus,logEDensCell);
          
          CaloLocalHadCoeff::LocalHadCoeff theData(3,0);
          theData[CaloLocalHadDefs::BIN_WEIGHT]  = prof->GetBinContent(iBin);
          theData[CaloLocalHadDefs::BIN_ENTRIES] = prof->GetBinEntries(iBin);
          theData[CaloLocalHadDefs::BIN_ERROR]   = prof->GetBinError(iBin);
          
          msg() << MSG::INFO << "Now set data for isamp=" << isamp
              << " and bins: ";
          for(unsigned int ii=0;ii<ibin.size();ii++)
            msg() << ibin[ii] << " ";
          msg() << endmsg;
                  int bin = data.getBin(isampmap[isamp],ibin);
                  if (bin < 0) {
                    ATH_MSG_ERROR("Bad return from getBin");
                    return StatusCode::FAILURE;
                  }
                  data.setCoeff(bin,theData);
        }
          }
        }
      }
    }
      }
      theKeyList->RemoveFirst();
    }
    if ( iread == 0 ) {
      // create the data object from all areas
      for(unsigned int jsamp=0;jsamp<theAreas.size();jsamp++) {
    if ( theAreas[jsamp].getNdim() > 0 ) { 
      ATH_MSG_INFO( "adding Area for jsamp=" << jsamp << " with nDim = " << theAreas[jsamp].getNdim()  );
      data.addArea(theAreas[jsamp]);
    }
      }
    }
    theLCWeightFile->Close();
    delete theLCWeightFile;
  }
  return StatusCode::SUCCESS;
}
                            
StatusCode CaloReadLCWeightsFile::initialize() {
  ATH_MSG_INFO( " Building CaloLocalHadCoeff object "  );
  auto data = std::make_unique<CaloLocalHadCoeff>();
  ATH_CHECK( initDataFromFile(m_LCWeightFileName, *data) );
  ATH_CHECK( detStore()->record(std::move(data), m_key, false) );
  return StatusCode::SUCCESS;
}
 
 
StatusCode  CaloReadLCWeightsFile::execute() 
{ 
  return StatusCode::SUCCESS;
}
 
StatusCode  CaloReadLCWeightsFile::finalize() 
{ 
  return StatusCode::SUCCESS;
}