MuonMillepedeAlgorithm.cc

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    #include <fstream>

    #include "TFile.h"
    #include "TTree.h"
    #include "TKey.h"

    #include "FWCore/MessageLogger/interface/MessageLogger.h"
    #include "FWCore/ParameterSet/interface/ParameterSet.h"
    #include "FWCore/Framework/interface/MakerMacros.h"
    #include "FWCore/Framework/interface/Frameworkfwd.h"


    #include "TrackingTools/PatternTools/interface/Trajectory.h"
    #include "TrackingTools/TrackFitters/interface/TrajectoryStateCombiner.h"

    #include "Alignment/CommonAlignment/interface/Alignable.h"  
    #include "Alignment/CommonAlignment/interface/AlignableNavigator.h"  
    #include "Alignment/CommonAlignment/interface/AlignableObjectId.h"  
    #include "Alignment/CommonAlignment/interface/AlignmentParameters.h"
    #include "Alignment/CommonAlignment/interface/SurveyResidual.h"
    #include "Alignment/CommonAlignmentAlgorithm/interface/AlignmentParameterStore.h"
    #include "Alignment/CommonAlignmentAlgorithm/interface/AlignmentParameterSelector.h"
        #include "Alignment/CommonAlignmentAlgorithm/interface/AlignmentIORoot.h"
    #include "Alignment/MuonAlignment/interface/AlignableMuon.h"
    #include "Alignment/TrackerAlignment/interface/AlignableTracker.h"
    #include <DataFormats/GeometrySurface/interface/LocalError.h> 
    #include "DataFormats/TrackReco/interface/Track.h"

    #include "Alignment/MuonAlignmentAlgorithms/plugins/MuonMillepedeAlgorithm.h"

        #include "Alignment/CommonAlignmentAlgorithm/interface/AlignmentAlgorithmPluginFactory.h"
     

    // Constructor ----------------------------------------------------------------

    MuonMillepedeAlgorithm::MuonMillepedeAlgorithm(const edm::ParameterSet& cfg):
      AlignmentAlgorithmBase( cfg )
    {

      // parse parameters

      edm::LogWarning("Alignment") << "[MuonMillepedeAlgorithm] constructed.";


      collec_f = cfg.getParameter<std::string>( "CollectionFile" );

      isCollectionJob = cfg.getParameter<bool>( "isCollectionJob" );
     
      collec_path = cfg.getParameter<std::string>( "collectionPath" );
      
      collec_number = cfg.getParameter<int>( "collectionNumber" );
        
      outputCollName =  cfg.getParameter<std::string>( "outputCollName" );
     
      ptCut = cfg.getParameter<double>( "ptCut" );
      
      chi2nCut = cfg.getParameter<double>( "chi2nCut" );


    }

    // Call at beginning of job ---------------------------------------------------

    void 
    MuonMillepedeAlgorithm::initialize( const edm::EventSetup& setup, 
                        AlignableTracker* tracker, AlignableMuon* muon, 
                        AlignableExtras* extras,
                        AlignmentParameterStore* store )
    {
      
      edm::LogWarning("Alignment") << "[MuonMillepedeAlgorithm] Initializing...";

      // accessor Det->AlignableDet
      theAlignableDetAccessor = new AlignableNavigator(tracker, muon);

      // set alignmentParameterStore
      theAlignmentParameterStore=store;

      // get alignables
      theAlignables = theAlignmentParameterStore->alignables();

    }

    void MuonMillepedeAlgorithm::collect()
    {

      std::map<std::string, TMatrixD *> map;

      for(int c_job = 0; c_job < collec_number; ++c_job)
      {
        char name_f[40];
        snprintf(name_f, sizeof(name_f), "%s_%d/%s", collec_path.c_str(), c_job, collec_f.c_str());
        TFile file_it(name_f);

        if(file_it.IsZombie())
          continue;

        TList *m_list = file_it.GetListOfKeys();
        if(m_list == 0) {
          return;
        }
        TKey *index = (TKey *)m_list->First();
        if(index == 0) {
        }
        if( index != 0 )
        {
          do
          {

        std::string objectName(index->GetName());
        TMatrixD *mat = (TMatrixD *)index->ReadObj();
        std::map<std::string, TMatrixD *>::iterator node = map.find(objectName);
        if(node == map.end())
        {
          TMatrixD *n_mat = new TMatrixD(mat->GetNrows(), mat->GetNcols());
          map.insert(make_pair(objectName, n_mat));
        }
        *(map[objectName]) += *mat;
        index = (TKey*)m_list->After(index);
          } while(index != 0);
        }
        file_it.Close();    
      }
      

      TFile theFile2(outputCollName.c_str(), "recreate");
      theFile2.cd();

      std::map<std::string, TMatrixD *>::iterator m_it = map.begin();
      for(; m_it != map.end(); ++m_it)
      {  
        if(m_it->first.find("_invCov") != std::string::npos)
        {
           std::string id_s = m_it->first.substr(0, m_it->first.find("_invCov"));
           std::string id_w = id_s + "_weightRes";
           std::string id_n = id_s + "_N";
           std::string cov = id_s + "_cov";
           std::string sol = id_s + "_sol";

           //Covariance calculation 
           TMatrixD invMat( m_it->second->GetNrows(), m_it->second->GetNcols()); 
           invMat = *(m_it->second);
           invMat.Invert();
           //weighted residuals
           TMatrixD weightMat( m_it->second->GetNcols(), 1);
           weightMat = *(map[id_w]);
           //Solution of the linear system
           TMatrixD solution( m_it->second->GetNrows(), 1);
           solution = invMat * weightMat;
           //Number of Tracks
           TMatrixD n(1,1);
           n = *(map[id_n]);     
           
           invMat.Write(cov.c_str());
           n.Write(id_n.c_str());
           solution.Write(sol.c_str());
        }
      }
      theFile2.Write();
      theFile2.Close();
    }


    // Call at end of job ---------------------------------------------------------

    void MuonMillepedeAlgorithm::terminate(void)
    {

      if( isCollectionJob )
      {
         this->collect();
         return;
      }


      edm::LogWarning("Alignment") << "[MuonMillepedeAlgorithm] Terminating";

      // iterate over alignment parameters
      for(std::vector<Alignable*>::const_iterator
        it=theAlignables.begin(); it!=theAlignables.end(); it++) {
        Alignable* ali=(*it);
        // Alignment parameters
        // AlignmentParameters* par = ali->alignmentParameters();
        edm::LogInfo("Alignment") << "now apply params";
        theAlignmentParameterStore->applyParameters(ali);
        // set these parameters 'valid'
        ali->alignmentParameters()->setValid(true);

      }

      edm::LogWarning("Alignment") << "[MuonMillepedeAlgorithm] Writing aligned parameters to file: " << theAlignables.size();

      TFile *theFile = new TFile(collec_f.c_str(), "recreate");
      theFile->cd();
      std::map<std::string, AlgebraicMatrix *>::iterator invCov_it = map_invCov.begin();
      std::map<std::string, AlgebraicMatrix *>::iterator weightRes_it = map_weightRes.begin();
      std::map<std::string, AlgebraicMatrix *>::iterator n_it = map_N.begin();
      for(; n_it != map_N.end(); ++invCov_it, ++weightRes_it, ++n_it)
      {
        TMatrixD tmat_invcov(0,0);
        this->toTMat(invCov_it->second, &tmat_invcov);
        TMatrixD tmat_weightres(0,0);
        this->toTMat(weightRes_it->second, &tmat_weightres);
        TMatrixD tmat_n(0,0);
        this->toTMat(n_it->second, &tmat_n);
        
        tmat_invcov.Write(invCov_it->first.c_str());
        tmat_weightres.Write(weightRes_it->first.c_str());
        tmat_n.Write(n_it->first.c_str());
      }

      theFile->Write();
      theFile->Close();

    }


    void MuonMillepedeAlgorithm::toTMat(AlgebraicMatrix *am_mat, TMatrixD *tmat_mat)
    {
      tmat_mat->ResizeTo(am_mat->num_row(), am_mat->num_col());
      for(int c_i = 0; c_i < am_mat->num_row(); ++c_i) {
        for(int c_j = 0; c_j < am_mat->num_col(); ++c_j) {
          (*tmat_mat)(c_i, c_j) = (*am_mat)[c_i][c_j];
        }
      }
    }



    // Run the algorithm on trajectories and tracks -------------------------------

    void MuonMillepedeAlgorithm::run(const edm::EventSetup& setup, const EventInfo &eventInfo)
        {
      
      if( isCollectionJob )
      {
        return;
      }


      // loop over tracks  
      //int t_counter = 0;
      const ConstTrajTrackPairCollection &tracks = eventInfo.trajTrackPairs();
      for( ConstTrajTrackPairCollection::const_iterator it=tracks.begin();
           it!=tracks.end();it++) {

        const Trajectory* traj = (*it).first;
        const reco::Track* track = (*it).second;

        float pt    = track->pt();
        float eta   = track->eta();
        float phi   = track->phi();
        float chi2n = track->normalizedChi2();
        //int   ndof = track->ndof();
        int   nhit  = track->numberOfValidHits();

        if (0) edm::LogInfo("Alignment") << "New track pt,eta,phi,chi2n,hits: " << pt <<","<< eta <<","<< phi <<","<< chi2n << ","<<nhit;

        //Accept or not accept the track
        if( pt > ptCut && chi2n < chi2nCut ) 
        {


          std::vector<const TransientTrackingRecHit*> hitvec;
          std::vector<TrajectoryStateOnSurface> tsosvec;
          
          std::vector<TrajectoryMeasurement> measurements = traj->measurements();
         
          //In this loop the measurements and hits are extracted and put on two vectors 
          for (std::vector<TrajectoryMeasurement>::iterator im=measurements.begin();
             im!=measurements.end(); im++)
          {
        TrajectoryMeasurement meas = *im;
        const TransientTrackingRecHit* hit = &(*meas.recHit());
        //We are not very strict at this point
        if (hit->isValid()  && theAlignableDetAccessor->detAndSubdetInMap( hit->geographicalId() ))
        {
          //***Forward
          TrajectoryStateOnSurface tsos = meas.forwardPredictedState();
          if (tsos.isValid())
          {
            hitvec.push_back(hit);
            tsosvec.push_back(tsos);
          }
        }
          }
        
          // transform RecHit vector to AlignableDet vector
          std::vector <AlignableDetOrUnitPtr> alidetvec = 
        theAlignableDetAccessor->alignablesFromHits(hitvec);

          // get concatenated alignment parameters for list of alignables
          CompositeAlignmentParameters aap = 
        theAlignmentParameterStore->selectParameters(alidetvec);

          std::vector<TrajectoryStateOnSurface>::const_iterator itsos=tsosvec.begin();
          std::vector<const TransientTrackingRecHit*>::const_iterator ihit=hitvec.begin();

          
          //int ch_counter = 0;

          while (itsos != tsosvec.end()) 
          {
        // get AlignableDet for this hit
        const GeomDet* det=(*ihit)->det();
        AlignableDetOrUnitPtr alidet = 
          theAlignableDetAccessor->alignableFromGeomDet(det);
          
        // get relevant Alignable
        Alignable* ali=aap.alignableFromAlignableDet(alidet);
         
        //To be sure that the ali is not null and that it's a DT segment 
        if ( ali!=0 && (*ihit)->geographicalId().subdetId() == 1)
        {
          DTChamberId m_Chamber(det->geographicalId());
          //Station 4 does not contain Theta SL 
          if((*ihit)->dimension() == 4 || ((*ihit)->dimension() == 2 && m_Chamber.station() == 4))
          //if((*ihit)->dimension() == 4)
          {
            edm::LogInfo("Alignment") << "Entrando";
          
            AlignmentParameters* params = ali->alignmentParameters();
          
            edm::LogInfo("Alignment") << "Entrando";
            //(dx/dz,dy/dz,x,y) for a 4DSegment
            AlgebraicVector ihit4D = (*ihit)->parameters();

            //The innerMostState always contains the Z
            //(q/pt,dx/dz,dy/dz,x,y)
            AlgebraicVector5 alivec = (*itsos).localParameters().mixedFormatVector();
            
            //The covariance matrix follows the sequence
            //(q/pt,dx/dz,dy/dz,x,y) but we reorder to
            //(x,y,dx/dz,dy/dz)
            AlgebraicSymMatrix55 rawCovMat = (*itsos).localError().matrix();
            AlgebraicMatrix CovMat(4,4);
            int m_index[] = {2,3,0,1};
            for(int c_ei = 0; c_ei < 4; ++c_ei)
            {
              for(int c_ej = 0; c_ej < 4; ++c_ej)
              {
            CovMat[m_index[c_ei]][m_index[c_ej]] = rawCovMat(c_ei+1,c_ej+1);
              }
            }
            
            int inv_check;
            //printM(CovMat);
            CovMat.invert(inv_check);
            if (inv_check != 0) { 
              edm::LogError("Alignment") << "Covariance Matrix inversion failed"; 
              return; 
            } 



            //The order is changed to:
            // (x,0,dx/dz,0) MB4 Chamber
            // (x,y,dx/dz,dy/dz) Not MB4 Chamber
            AlgebraicMatrix residuals(4,1);
            if(m_Chamber.station() == 4)
            {
              //Filling Residuals
              residuals[0][0] = ihit4D[2]-alivec[3];
              residuals[1][0] = 0.0;
              residuals[2][0] = ihit4D[0]-alivec[1];
              residuals[3][0] = 0.0;
              //The error in the Theta coord is set to infinite
              CovMat[1][0] = 0.0; CovMat[1][1] = 0.0; CovMat[1][2] = 0.0;
              CovMat[1][3] = 0.0; CovMat[0][1] = 0.0; CovMat[2][1] = 0.0; 
              CovMat[3][1] = 0.0; CovMat[3][0] = 0.0; CovMat[3][2] = 0.0;
              CovMat[3][3] = 0.0; CovMat[0][3] = 0.0; CovMat[2][3] = 0.0; 
            }
            else
            {
              //Filling Residuals
              residuals[0][0] = ihit4D[2]-alivec[3];
              residuals[1][0] = ihit4D[3]-alivec[4];
              residuals[2][0] = ihit4D[0]-alivec[1];
              residuals[3][0] = ihit4D[1]-alivec[2];
            }
      
            // Derivatives 
            AlgebraicMatrix derivsAux = params->selectedDerivatives(*itsos,alidet);
            
            std::vector<bool> mb4_mask;
            std::vector<bool> selection;
            //To be checked 
            mb4_mask.push_back(true); mb4_mask.push_back(false); mb4_mask.push_back(true); 
            mb4_mask.push_back(true); mb4_mask.push_back(true); mb4_mask.push_back(false); 
            selection.push_back(true); selection.push_back(true); selection.push_back(false); 
            selection.push_back(false); selection.push_back(false); selection.push_back(false); 
            int nAlignParam = 0;
            if(m_Chamber.station() == 4)
            {  
              for(int icor = 0; icor < 6; ++icor)
              {
            if(mb4_mask[icor] && selection[icor]) nAlignParam++;                      
              }
            }
            else
            {
              nAlignParam = derivsAux.num_row();
            }
            
            AlgebraicMatrix derivs(nAlignParam, 4);
            if(m_Chamber.station() == 4)
            { 
              int der_c = 0;
              for(int icor = 0; icor < 6; ++icor)
              {
            if(mb4_mask[icor] && selection[icor])
            {
               for(int ccor = 0; ccor < 4; ++ccor)
               {
                 derivs[der_c][ccor] = derivsAux[icor][ccor];
                 ++der_c;
               }
            } 
              }
            }
            else
            {
              derivs = derivsAux;
            }
     

            //for(int co = 0; co < derivs.num_row(); ++co)
            //{
            //  for(int ci = 0; ci < derivs.num_col(); ++ci)
            //  {
            //     edm::LogInfo("Alignment") << "Derivatives: " << co << " " << ci << " " << derivs[co][ci] << " ";
            //  }
            //} 
      
            AlgebraicMatrix derivsT = derivs.T();
            AlgebraicMatrix invCov = derivs*CovMat*derivsT;
            AlgebraicMatrix weightRes = derivs*CovMat*residuals;

            //this->printM(derivs);
            //this->printM(CovMat);
            //this->printM(residuals);
            
            char name[40];
            snprintf(name, sizeof(name),
                 "Chamber_%d_%d_%d", m_Chamber.wheel(), m_Chamber.station(), m_Chamber.sector());
            std::string chamId(name);
            //MB4 need a special treatment
            /*AlgebraicMatrix invCovMB4(2,2);
            AlgebraicMatrix weightResMB4(2,1); 
            if( m_Chamber.station() == 4 )
            { 
              int m_index_2[] = {0,2};
              for(int c_i = 0; c_i < 2; ++c_i)
              {
            weightResMB4[c_i][0] = weightRes[m_index_2[c_i]][0];
            for(int c_j = 0; c_j < 2; ++c_j)
            {
              invCovMB4[c_i][c_j] = invCov[m_index_2[c_i]][m_index_2[c_j]];
            }  
              }
              this->updateInfo(invCovMB4, weightResMB4, residuals, chamId); 
            }
            else
            {
              this->updateInfo(invCov, weightRes, residuals, chamId); 
            }*/
            this->updateInfo(invCov, weightRes, residuals, chamId); 
          }
        }
        itsos++;
        ihit++;
          }
        }
      } // end of track loop

    }


    //Auxiliar
    void MuonMillepedeAlgorithm::printM(AlgebraicMatrix m)
    {
      //for(int i = 0; i < m.num_row(); ++i)
      // {
      //  for(int j = 0; j < m.num_col(); ++j)
      //  {
      //    std::cout << m[i][j] << " ";
      //  }
      //  std::cout << std::endl;
      //}
    }

    void MuonMillepedeAlgorithm::updateInfo(AlgebraicMatrix m_invCov,
                         AlgebraicMatrix m_weightRes,
                         AlgebraicMatrix m_res,
                         std::string id)
    {

      

      std::string id_invCov = id + "_invCov";
      std::string id_weightRes = id + "_weightRes";
      std::string id_n = id + "_N";
      
      edm::LogInfo("Alignment") << "Entrando";

      std::map<std::string, AlgebraicMatrix *>::iterator node = map_invCov.find(id_invCov);
      if(node == map_invCov.end())
      {
        AlgebraicMatrix *f_invCov = new AlgebraicMatrix(m_invCov.num_row(), m_invCov.num_col());
        AlgebraicMatrix *f_weightRes = new AlgebraicMatrix(m_weightRes.num_row(), m_weightRes.num_col());
        AlgebraicMatrix *f_n = new AlgebraicMatrix(1,1);

        map_invCov.insert(make_pair(id_invCov, f_invCov));
        map_weightRes.insert(make_pair(id_weightRes, f_weightRes));
        map_N.insert(make_pair(id_n, f_n));

        for(int iCount = 0; iCount < 4; ++iCount)
        {
          char name[40];
          snprintf(name, sizeof(name), "%s_var_%d", id.c_str(), iCount);
          std::string idName(name);
          float range = 5.0;
          //if( iCount == 0 || iCount == 1 ) {
          //  range = 0.01;
          //}
          TH1D *histo = fs->make<TH1D>(idName.c_str(), idName.c_str(), 200, -range, range );
          histoMap.insert(make_pair(idName, histo));
        }
      }
      
      *map_invCov[id_invCov] = *map_invCov[id_invCov] + m_invCov;
      *map_weightRes[id_weightRes] = *map_weightRes[id_weightRes] + m_weightRes;
      (*map_N[id_n])[0][0]++;

      for(int iCount = 0; iCount < 4; ++iCount)
      {
        char name[40];
        snprintf(name, sizeof(name), "%s_var_%d", id.c_str(), iCount);
        std::string idName(name); 
        histoMap[idName]->Fill(m_res[iCount][0]);
      }
    } 



DEFINE_EDM_PLUGIN( AlignmentAlgorithmPluginFactory, MuonMillepedeAlgorithm, "MuonMillepedeAlgorithm" );