/data/refman/pasoursint/CMSSW_4_1_8_patch9/src/RecoLocalCalo/EcalRecProducers/plugins/EcalUncalibRecHitWorkerFixedAlphaBetaFit.cc

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#include "RecoLocalCalo/EcalRecProducers/plugins/EcalUncalibRecHitWorkerFixedAlphaBetaFit.h"

#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "DataFormats/Common/interface/Handle.h"

#include "DataFormats/EcalRecHit/interface/EcalUncalibratedRecHit.h"
#include "DataFormats/EcalRecHit/interface/EcalRecHitCollections.h"

#include "CondFormats/EcalObjects/interface/EcalPedestals.h"
#include "CondFormats/DataRecord/interface/EcalPedestalsRcd.h"

#include "CondFormats/EcalObjects/interface/EcalMGPAGainRatio.h"
#include "CondFormats/EcalObjects/interface/EcalGainRatios.h"
#include "CondFormats/DataRecord/interface/EcalGainRatiosRcd.h"

#include <iostream>
#include <cmath>
#include <fstream>

EcalUncalibRecHitWorkerFixedAlphaBetaFit::EcalUncalibRecHitWorkerFixedAlphaBetaFit(const edm::ParameterSet& ps) :
        EcalUncalibRecHitWorkerBaseClass( ps )
{
        alphaEB_= ps.getParameter<double>("alphaEB");
        betaEB_= ps.getParameter<double>("betaEB");
        alphaEE_= ps.getParameter<double>("alphaEE");
        betaEE_= ps.getParameter<double>("betaEE");

        alphabetaFilename_= ps.getUntrackedParameter<std::string>("AlphaBetaFilename","NOFILE");
        useAlphaBetaArray_=setAlphaBeta(); // set crystalwise values of alpha and beta
        if ( !useAlphaBetaArray_ ) {
                edm::LogInfo("EcalUncalibRecHitError") << " No alfa-beta file found. Using the deafult values.";
        }

        algoEB_.SetMinAmpl( ps.getParameter<double> ("MinAmplBarrel") );
        algoEE_.SetMinAmpl( ps.getParameter<double> ("MinAmplEndcap") );

        bool dyn_pede = ps.getParameter<bool>("UseDynamicPedestal");
        algoEB_.SetDynamicPedestal(dyn_pede);
        algoEE_.SetDynamicPedestal(dyn_pede);
}


void
EcalUncalibRecHitWorkerFixedAlphaBetaFit::set(const edm::EventSetup& es)
{
        // Gain Ratios
        LogDebug("EcalUncalibRecHitDebug") << "fetching gainRatios....";
        es.get<EcalGainRatiosRcd>().get(pRatio);
        LogDebug("EcalUncalibRecHitDebug") << "done." ;

        // fetch the pedestals from the cond DB via EventSetup
        LogDebug("EcalUncalibRecHitDebug") << "fetching pedestals....";
        es.get<EcalPedestalsRcd>().get( pedHandle );
        LogDebug("EcalUncalibRecHitDebug") << "done." ;
}

//Sets the alphaBetaValues_ vectors by the values provided in alphabetaFilename_
bool
EcalUncalibRecHitWorkerFixedAlphaBetaFit::setAlphaBeta(){
        std::ifstream file(alphabetaFilename_.c_str());
        if (! file.is_open())
                return false;

        alphaBetaValues_.resize(36);

        char buffer[100];
        int sm, cry,ret;
        float a,b;
        std::pair<double,double> p(-1,-1);

        while( ! file.getline(buffer,100).eof() ){
                ret=sscanf(buffer,"%d %d %f %f", &sm, &cry, &a, &b);
                if ((ret!=4)||
                                (sm<=0) ||(sm>36)||
                                (cry<=0)||(cry>1700)){
                        // send warning
                        continue;
                }

                if (alphaBetaValues_[sm-1].size()==0){
                        alphaBetaValues_[sm-1].resize(1700,p);
                }
                alphaBetaValues_[sm-1][cry-1].first = a;    
                alphaBetaValues_[sm-1][cry-1].second = b;

        }

        file.close();
        return true;
}

bool
EcalUncalibRecHitWorkerFixedAlphaBetaFit::run(const edm::Event& evt, 
                const EcalDigiCollection::const_iterator & itdg, 
                EcalUncalibratedRecHitCollection & result)
{

        const EcalGainRatioMap& gainMap = pRatio.product()->getMap(); // map of gain ratios
        EcalGainRatioMap::const_iterator gainIter; // gain iterator
        EcalMGPAGainRatio aGain; // gain object for a single xtal

        const EcalPedestalsMap & pedMap = pedHandle.product()->getMap(); // map of pedestals
        EcalPedestalsMapIterator pedIter; // pedestal iterator
        EcalPedestals::Item aped; // pedestal object for a single xtal

        DetId detid( itdg->id() );

        // find pedestals for this channel
        //LogDebug("EcalUncalibRecHitDebug") << "looking up pedestal for crystal: " << itdg->id();
        pedIter = pedMap.find(itdg->id());
        if( pedIter != pedMap.end() ) {
                aped = (*pedIter);
        } else {
                edm::LogError("EcalUncalibRecHitWorkerFixedAlphaBetaFit") << "error!! could not find pedestals for channel: ";
                if ( detid.subdetId() == EcalBarrel ) {
                        edm::LogError("EcalUncalibRecHitWorkerFixedAlphaBetaFit") << EBDetId( detid );
                } else {
                        edm::LogError("EcalUncalibRecHitWorkerFixedAlphaBetaFit") << EEDetId( detid );
                }
                edm::LogError("EcalUncalibRecHitWorkerFixedAlphaBetaFit") << "\n  no uncalib rechit will be made for this digi!";
                return false;
        }
        double pedVec[3];
        pedVec[0] = aped.mean_x12;
        pedVec[1] = aped.mean_x6;
        pedVec[2] = aped.mean_x1;

        // find gain ratios
        //LogDebug("EcalUncalibRecHitDebug") << "looking up gainRatios for crystal: " << EBDetId(itdg->id()) ; // FIXME!!!!!!!!
        gainIter = gainMap.find(itdg->id());
        if( gainIter != gainMap.end() ) {
                aGain = (*gainIter);
        } else {
                edm::LogError("EcalUncalibRecHitWorkerFixedAlphaBetaFit") << "error!! could not find gain ratios for channel: ";
                if ( detid.subdetId() == EcalBarrel ) {
                        edm::LogError("EcalUncalibRecHitWorkerFixedAlphaBetaFit") << EBDetId( detid );
                } else {
                        edm::LogError("EcalUncalibRecHitWorkerFixedAlphaBetaFit") << EEDetId( detid );
                }
                edm::LogError("EcalUncalibRecHitWorkerFixedAlphaBetaFit") << "\n  no uncalib rechit will be made for this digi!";
                return false;
        }
        double gainRatios[3];
        gainRatios[0] = 1.;
        gainRatios[1] = aGain.gain12Over6();
        gainRatios[2] = aGain.gain6Over1()*aGain.gain12Over6();

        if ( detid.subdetId() == EcalBarrel ) {
                // Define Alpha and Beta either by stored values or by default universal values
                EBDetId ebDetId( detid );
                double a, b;
                if (useAlphaBetaArray_){
                        if ( alphaBetaValues_[ ebDetId.ism()-1 ].size() != 0 ) {
                                a = alphaBetaValues_[ebDetId.ism()-1][ebDetId.ic()-1].first;
                                b = alphaBetaValues_[ebDetId.ism()-1][ebDetId.ic()-1].second;
                                if ( ( a == -1 ) && ( b == -1 ) ) {
                                        a = alphaEB_;
                                        b = betaEB_;
                                }
                        } else {
                                a = alphaEB_;
                                b = betaEB_;
                        }
                } else {
                        a = alphaEB_;
                        b = betaEB_;
                }
                algoEB_.SetAlphaBeta(a,b);
                result.push_back( algoEB_.makeRecHit( *itdg, pedVec, gainRatios, 0, 0) );
        } else {
                //FIX ME load in a and b from a file
                algoEE_.SetAlphaBeta(alphaEE_,betaEE_);
                result.push_back( algoEE_.makeRecHit(*itdg, pedVec, gainRatios, 0 , 0) );
        }
        return true;
}

#include "FWCore/Framework/interface/MakerMacros.h"
#include "RecoLocalCalo/EcalRecProducers/interface/EcalUncalibRecHitWorkerFactory.h"
DEFINE_EDM_PLUGIN( EcalUncalibRecHitWorkerFactory, EcalUncalibRecHitWorkerFixedAlphaBetaFit, "EcalUncalibRecHitWorkerFixedAlphaBetaFit" );