CalibCompare.cc

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#include "RecoParticleFlow/PFClusterTools/interface/CalibCompare.h"
#include "RecoParticleFlow/PFClusterTools/interface/PFToolsException.h"
#include "RecoParticleFlow/PFClusterTools/interface/TreeUtility.h"
#include "DataFormats/ParticleFlowReco/interface/Calibratable.h"
#include "RecoParticleFlow/PFClusterTools/interface/DetectorElement.h"
#include "RecoParticleFlow/PFClusterTools/interface/Calibrator.h"
#include "RecoParticleFlow/PFClusterTools/interface/LinearCalibrator.h"
#include "RecoParticleFlow/PFClusterTools/interface/SpaceManager.h"
#include "DataFormats/ParticleFlowReco/interface/CalibrationProvenance.h"
#include "RecoParticleFlow/PFClusterTools/interface/Region.h"
#include "RecoParticleFlow/PFClusterTools/interface/IO.h"

#include <TFile.h>
#include <TTree.h>
#include <TH3F.h>
#include <TF2.h>
#include <TH1F.h>
#include <TGraph.h>
#include <TF1.h>
#include <vector>
#include <TROOT.h>

using namespace pftools;

CalibCompare::~CalibCompare() {
}

CalibCompare::CalibCompare(IO* options) :
    withOffset_(false), target_(CLUSTER), options_(options), debug_(0),
            mlpOffset_(0.0), mlpSlope_(1.0) {

    options_->GetOpt("exercises", "withOffset", withOffset_);
    options_->GetOpt("exercises", "debug", debug_);

    /* Initialise PFClusterCalibration appropriately. */
    double g0, g1, e0, e1;
    options_->GetOpt("correction", "globalP0", g0);
    options_->GetOpt("correction", "globalP1", g1);
    options_->GetOpt("correction", "lowEP0", e0);
    options_->GetOpt("correction", "lowEP1", e1);
    clusterCalibration_.setCorrections(e0, e1, g0, g1);

    double ecalECut, hcalECut;
    options_->GetOpt("evolution", "ecalECut", ecalECut);
    options_->GetOpt("evolution", "hcalECut", hcalECut);
    clusterCalibration_.setEcalHcalEnergyCuts(ecalECut, hcalECut);

    int allowNegative(0);
    options_->GetOpt("correction", "allowNegativeEnergy", allowNegative);
    clusterCalibration_.setAllowNegativeEnergy(allowNegative);

    int doCorrection(1);
    options_->GetOpt("correction", "doCorrection", doCorrection);
    clusterCalibration_.setDoCorrection(doCorrection);

    int doEtaCorrection(0);
    options_->GetOpt("correction", "doEtaCorrection", doEtaCorrection);
    clusterCalibration_.setDoEtaCorrection(doEtaCorrection);

    double barrelEta;
    options_->GetOpt("evolution", "barrelEndcapEtaDiv", barrelEta);
    clusterCalibration_.setBarrelBoundary(barrelEta);

    double maxEToCorrect(100.0);
    options_->GetOpt("correction", "maxEToCorrect", maxEToCorrect);
    clusterCalibration_.setMaxEToCorrect(maxEToCorrect);

    std::vector<std::string>* names = clusterCalibration_.getKnownSectorNames();
    for (std::vector<std::string>::iterator i = names->begin(); i
            != names->end(); ++i) {
        std::string sector = *i;
        std::vector<double> params;
        options_->GetOpt("evolution", sector.c_str(), params);
        clusterCalibration_.setEvolutionParameters(sector, params);
    }

    std::vector<double> etaParams;
    options_->GetOpt("evolution", "etaCorrection", etaParams);
    clusterCalibration_.setEtaCorrectionParameters(etaParams);

    std::cout << clusterCalibration_ << "\n";

    options_->GetOpt("correction", "mlpOffset", mlpOffset_);
    options_->GetOpt("correction", "mlpSlope", mlpSlope_);

    erlCalibration_.setOffsetAndSlope(mlpOffset_, mlpSlope_);

    if (debug_ > 0)
        std::cout << __PRETTY_FUNCTION__ << ": finished.\n";

}

void CalibCompare::calibrateCalibratables(TChain& sourceTree,
        const std::string& exercisefile) {

    if (debug_ > 0) {
        std::cout << "Welcome to " << __PRETTY_FUNCTION__ << "\n";
        std::cout << "Opening TTree...\n";
    }

    TreeUtility tu;
    std::vector<Calibratable> calibVec;

    tu.getCalibratablesFromRootFile(sourceTree, calibVec);

    std::cout << "Moving on... " << std::endl;
    TFile* exercises = new TFile(exercisefile.c_str(), "recreate");
    TTree tree("CalibratedParticles", "");
    Calibratable* calibrated = new Calibratable();
    tree.Branch("Calibratable", "pftools::Calibratable", &calibrated, 32000, 2);

    evaluateCalibrations(tree, calibrated, calibVec);

    //save results
    std::cout << "Writing output tree...\n";
    tree.Write();
    //gaussianFits(*exercises, calibVec);
    exercises->Write();
    exercises->Close();
    std::cout << "Done." << std::endl;
    delete calibrated;

}

void CalibCompare::evaluateCalibrations(TTree& tree, Calibratable* calibrated,
        const std::vector<Calibratable>& calibVec) {

    unsigned count(0);
    for (std::vector<Calibratable>::const_iterator zit = calibVec.begin(); zit
            != calibVec.end(); ++zit) {

        const Calibratable& calib = *zit;

        calibrated->reset();

        CalibrationResultWrapper crwPre;
        crwPre.ecalEnergy_ = calib.cluster_energyEcal_;
        crwPre.hcalEnergy_ = calib.cluster_energyHcal_;
        crwPre.particleEnergy_ = calib.cluster_energyEcal_
                + calib.cluster_energyHcal_;
        crwPre.truthEnergy_ = calib.sim_energyEvent_;
        crwPre.provenance_ = UNCALIBRATED;
        crwPre.targetFuncContrib_ = 0;
        crwPre.target_ = target_;
        crwPre.compute();
        calibrated->calibrations_.push_back(crwPre);

        CalibrationResultWrapper crwErl;

        crwErl.particleEnergy_ = erlCalibration_.evaluate(crwPre.ecalEnergy_,
                crwPre.hcalEnergy_, calib.cluster_numEcal_,
                calib.cluster_numHcal_, fabs(calib.cluster_meanEcal_.eta_)
                        / 2.0, crwPre.ecalEnergy_ / (crwPre.particleEnergy_),
                (calib.cluster_meanEcal_.phi_ + 3.14) / 6.3);
        crwErl.ecalEnergy_ = crwErl.particleEnergy_
                * erlCalibration_.ecalFraction(crwPre.ecalEnergy_,
                        crwPre.hcalEnergy_, calib.cluster_numEcal_,
                        calib.cluster_numHcal_, fabs(
                                calib.cluster_meanEcal_.eta_) / 2.0,
                        crwPre.ecalEnergy_ / (crwPre.particleEnergy_),
                        (calib.cluster_meanEcal_.phi_ + 3.14) / 6.3);

        crwErl.hcalEnergy_ = crwErl.particleEnergy_ - crwErl.ecalEnergy_;
        crwErl.b_ = crwErl.ecalEnergy_ / crwPre.ecalEnergy_;
        crwErl.c_ = crwErl.hcalEnergy_ / crwPre.hcalEnergy_;

        crwErl.truthEnergy_ = calib.sim_energyEvent_;
        crwErl.provenance_ = BAYESIAN;
        crwErl.target_ = target_;
        crwErl.compute();
        calibrated->calibrations_.push_back(crwErl);

        CalibrationResultWrapper crwCorr;

        crwCorr.ecalEnergy_ = clusterCalibration_.getCalibratedEcalEnergy(
                crwPre.ecalEnergy_, crwPre.hcalEnergy_,
                calib.cluster_meanEcal_.eta_, calib.cluster_meanEcal_.phi_);
        crwCorr.hcalEnergy_ = clusterCalibration_.getCalibratedHcalEnergy(
                crwPre.ecalEnergy_, crwPre.hcalEnergy_,
                calib.cluster_meanHcal_.eta_, calib.cluster_meanHcal_.phi_);
        crwCorr.particleEnergy_ = clusterCalibration_.getCalibratedEnergy(
                crwPre.ecalEnergy_, crwPre.hcalEnergy_, calib.sim_etaEcal_,
                calib.sim_phiEcal_);

        crwCorr.truthEnergy_ = calib.sim_energyEvent_;
        crwCorr.provenance_ = LINEAR;
        crwCorr.targetFuncContrib_ = 0;;
        crwCorr.target_ = target_;
        crwCorr.compute();
        calibrated->calibrations_.push_back(crwCorr);

        calibrated->recompute();

        tree.Fill();

        ++count;
    }

}