/data/refman/pasoursint/CMSSW_6_1_2_SLHC4_patch1/src/CalibMuon/DTCalibration/plugins/DTTPAnalyzer.cc

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#include "FWCore/Framework/interface/EDAnalyzer.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "FWCore/Framework/interface/ESHandle.h"

#include <string>
#include <map>

//class DTT0;
class DTLayerId;
class DTWireId;
class DTGeometry;
class DTTTrigBaseSync;
class TFile;

class DTTPAnalyzer : public edm::EDAnalyzer {
public:
  DTTPAnalyzer( const edm::ParameterSet& );
  virtual ~DTTPAnalyzer();

  //void beginJob();
  void beginRun( const edm::Run& , const edm::EventSetup& );
  void analyze( const edm::Event& , const edm::EventSetup& );
  void endJob();
  
private:
  std::string getHistoName( const DTLayerId& ); 

  bool subtractT0_;
  edm::InputTag digiLabel_;

  TFile* rootFile_;
  //const DTT0* tZeroMap_;
  edm::ESHandle<DTGeometry> dtGeom_;
  DTTTrigBaseSync* tTrigSync_;

  // Map of the t0 and sigma histos by layer
  std::map<DTWireId, int> nDigisPerWire_;
  std::map<DTWireId, double> sumWPerWire_;
  std::map<DTWireId, double> sumW2PerWire_;
  //std::map<DTLayerId, TH1F*> meanHistoMap_;
  //std::map<DTLayerId, TH1F*> sigmaHistoMap_;
};

#include "FWCore/Framework/interface/Event.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Framework/interface/MakerMacros.h"

#include "CalibMuon/DTDigiSync/interface/DTTTrigSyncFactory.h"
#include "CalibMuon/DTDigiSync/interface/DTTTrigBaseSync.h"

#include "Geometry/Records/interface/MuonGeometryRecord.h"
#include "Geometry/Records/interface/MuonNumberingRecord.h"
#include "Geometry/DTGeometry/interface/DTGeometry.h"

#include "DataFormats/DTDigi/interface/DTDigiCollection.h"
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"

#include "CondFormats/DTObjects/interface/DTT0.h"

#include "TH1F.h"
#include "TFile.h"

DTTPAnalyzer::DTTPAnalyzer(const edm::ParameterSet& pset):
  subtractT0_(pset.getParameter<bool>("subtractT0")),
  digiLabel_(pset.getParameter<edm::InputTag>("digiLabel")),
  tTrigSync_(0) {

  std::string rootFileName = pset.getUntrackedParameter<std::string>("rootFileName");
  rootFile_ = new TFile(rootFileName.c_str(), "RECREATE");
  rootFile_->cd();

  if(subtractT0_) 
     tTrigSync_ = DTTTrigSyncFactory::get()->create(pset.getParameter<std::string>("tTrigMode"),
                                                    pset.getParameter<edm::ParameterSet>("tTrigModeConfig"));

}
 
DTTPAnalyzer::~DTTPAnalyzer(){  
  rootFile_->Close();
}

void DTTPAnalyzer::beginRun(const edm::Run& run, const edm::EventSetup& setup) {
  // Get the t0 map from the DB
  if(subtractT0_){ 
     /*ESHandle<DTT0> t0;
     setup.get<DTT0Rcd>().get(t0);
     tZeroMap_ = &*t0;*/
     tTrigSync_->setES(setup);
  }
  // Get the DT Geometry  
  setup.get<MuonGeometryRecord>().get(dtGeom_);
}

void DTTPAnalyzer::analyze(const edm::Event & event, const edm::EventSetup& setup) {

  // Get the digis from the event
  edm::Handle<DTDigiCollection> digis; 
  event.getByLabel(digiLabel_, digis);

  // Iterate through all digi collections ordered by LayerId   
  DTDigiCollection::DigiRangeIterator dtLayerIt;
  for (dtLayerIt = digis->begin();
       dtLayerIt != digis->end();
       ++dtLayerIt){
    // Get the iterators over the digis associated with this LayerId
    const DTDigiCollection::Range& digiRange = (*dtLayerIt).second;
  
    // Get the layerId
    const DTLayerId layerId = (*dtLayerIt).first; //FIXME: check to be in the right sector

    // Loop over all digis in the given layer
    for (DTDigiCollection::const_iterator digi = digiRange.first;
         digi != digiRange.second;
         digi++) {
       const DTWireId wireId( layerId, (*digi).wire() );

       double t0 = (*digi).countsTDC();

       //FIXME: Reject digis not coming from TP

       if(subtractT0_) {
          const DTLayer* layer = 0; //fake
          const GlobalPoint glPt; //fake
          double offset = tTrigSync_->offset(layer, wireId, glPt);
          t0 -= offset;
       }

       if(nDigisPerWire_.find(wireId) == nDigisPerWire_.end()){
          nDigisPerWire_[wireId] = 0;
          sumWPerWire_[wireId] = 0.;
          sumW2PerWire_[wireId] = 0.;  
       }

       ++nDigisPerWire_[wireId]; 
       sumWPerWire_[wireId] += t0;
       sumW2PerWire_[wireId] += t0*t0;
    }

  }
}

void DTTPAnalyzer::endJob() {
  rootFile_->cd();
  std::map<DTLayerId, TH1F*> meanHistoMap;
  std::map<DTLayerId, TH1F*> sigmaHistoMap; 
  for(std::map<DTWireId, int>::const_iterator wireIdIt = nDigisPerWire_.begin();
                                              wireIdIt != nDigisPerWire_.end(); ++wireIdIt){
     DTWireId wireId((*wireIdIt).first);

     int nDigis = nDigisPerWire_[wireId];
     double sumW = sumWPerWire_[wireId];
     double sumW2 = sumW2PerWire_[wireId]; 

     double mean = sumW/nDigis;
     double rms = sumW2/nDigis - mean*mean;
     rms = sqrt(rms);

     DTLayerId layerId = wireId.layerId();
     if(meanHistoMap.find(layerId) == meanHistoMap.end()) {
        std::string histoName = getHistoName(layerId);
        const int firstChannel = dtGeom_->layer(layerId)->specificTopology().firstChannel();
        const int nWires = dtGeom_->layer(layerId)->specificTopology().channels();
        TH1F* meanHistoTP = new TH1F((histoName + "_tpMean").c_str(),"mean from test pulses by channel", 
                                      nWires,firstChannel,(firstChannel + nWires));
        TH1F* sigmaHistoTP = new TH1F((histoName + "_tpSigma").c_str(),"sigma from test pulses by channel",
                                      nWires,firstChannel,(firstChannel + nWires));
        meanHistoMap[layerId] = meanHistoTP;
        sigmaHistoMap[layerId] = sigmaHistoTP;
     }
     // Fill the histograms
     int nBin = meanHistoMap[layerId]->GetXaxis()->FindFixBin(wireId.wire());
     meanHistoMap[layerId]->SetBinContent(nBin,mean);
     sigmaHistoMap[layerId]->SetBinContent(nBin,rms);
  }

  for(std::map<DTLayerId, TH1F*>::const_iterator key = meanHistoMap.begin();
                                                 key != meanHistoMap.end(); ++key){
     meanHistoMap[(*key).first]->Write();
     sigmaHistoMap[(*key).first]->Write(); 
  } 

}

std::string DTTPAnalyzer::getHistoName(const DTLayerId& lId) {
  std::string histoName;
  std::stringstream theStream;
  theStream << "Ch_" << lId.wheel() << "_" << lId.station() << "_" << lId.sector()
            << "_SL" << lId.superlayer() << "_L" << lId.layer();
  theStream >> histoName;
  return histoName;
}

DEFINE_FWK_MODULE(DTTPAnalyzer);