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loizides |
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// $Id: FakeRate.cc,v 1.1 2009/06/30 10:47:17 loizides Exp $
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loizides |
1.1 |
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#include "MitPhysics/FakeMods/interface/FakeRate.h"
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loizides |
1.2 |
#include <TMath.h>
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loizides |
1.1 |
#include <TFile.h>
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#include <TH1.h>
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#include <TH2.h>
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#include <TH3.h>
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#include <TF1.h>
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#include <TF2.h>
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using namespace mithep;
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using namespace std;
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ClassImp(mithep::FakeRate)
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//--------------------------------------------------------------------------------------------------
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Bool_t FakeRate::Init()
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{
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//Load all histogram files.
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//Get the root file which is storing the fake rates
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TFile *ElectronFRFile = new TFile(fElectronFRFilename);
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if (!ElectronFRFile) {
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cerr << "The Electron FakeRate file : " << fElectronFRFilename << " could not be opened!\n";
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return false;
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}
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TFile *MuonFRFile = new TFile(fMuonFRFilename);
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if (!MuonFRFile) {
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cerr << "The Muon FakeRate file : " << fMuonFRFilename << " could not be opened!\n";
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return false;
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}
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// *****************************************************************************************
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// Load Histogram / Fit Functions from the file
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// *****************************************************************************************
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if (fUse2DFakeRate) {
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fElectronFakeRateHist_PtEta = (TH2F*)(ElectronFRFile->Get(fElectronFRHistName));
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fMuonFakeRateHist_PtEta = (TH2F*)(MuonFRFile->Get(fMuonFRHistName));
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if (!fElectronFakeRateHist_PtEta) {
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cout << "Error: Histogram " << fElectronFRHistName << " cannot be loaded from file "
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<< fElectronFRFilename << endl;
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}
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if (!fMuonFakeRateHist_PtEta) {
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cout << "Error: Histogram " << fMuonFRHistName << " cannot be loaded. from file"
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<< fMuonFRFilename << endl;
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}
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fElectronFakeRateHist_PtEta->SetDirectory(0);
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fMuonFakeRateHist_PtEta->SetDirectory(0);
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if (fUseFitFunction) {
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//Currently unsupported
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cerr << "Error: Using 2D Fake Rates with Fit Function is not currently supported.\n";
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return false;
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//Once supported, below code will load the functions.
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TF2 *ElectronFakeRateFit_PtEta_temp = (TF2*)(ElectronFRFile->Get(fElectronFRFunctionName));
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TF2 *MuonFakeRateFit_PtEta_temp = (TF2*)(MuonFRFile->Get(fMuonFRFunctionName));
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if (!ElectronFakeRateFit_PtEta_temp) {
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cout << "Error: Function " << fElectronFRFunctionName << " cannot be loaded from file "
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<< fElectronFRFilename << endl;
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}
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if (!MuonFakeRateFit_PtEta_temp) {
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cout << "Error: Function " << fMuonFRFunctionName << " cannot be loaded. from file"
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<< fMuonFRFilename << endl;
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}
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fElectronFakeRateFit_PtEta = (TF2*)(ElectronFakeRateFit_PtEta_temp->Clone());
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fMuonFakeRateFit_PtEta = (TF2*)(MuonFakeRateFit_PtEta_temp->Clone());
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}
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} else {
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fElectronFakeRateHist_Pt = (TH1F*)(ElectronFRFile->Get(fElectronFRHistName));
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fMuonFakeRateHist_Pt = (TH1F*)(MuonFRFile->Get(fMuonFRHistName));
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if (!fElectronFakeRateHist_Pt) {
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cout << "Error: Histogram " << fElectronFRHistName << " cannot be loaded from file "
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<< fElectronFRFilename << endl;
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}
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if (!fMuonFakeRateHist_Pt) {
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cout << "Error: Histogram " << fMuonFRHistName << " cannot be loaded. from file"
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<< fMuonFRFilename << endl;
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}
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fElectronFakeRateHist_Pt->SetDirectory(0);
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fMuonFakeRateHist_Pt->SetDirectory(0);
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if (fUseFitFunction) {
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TF1 *ElectronFakeRateFit_Pt_temp = (TF1*)(ElectronFRFile->Get(fElectronFRFunctionName));
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TF1 *MuonFakeRateFit_Pt_temp = (TF1*)(MuonFRFile->Get(fMuonFRFunctionName));
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if (!ElectronFakeRateFit_Pt_temp) {
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cout << "Error: Function " << fElectronFRFunctionName << " cannot be loaded from file "
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<< fElectronFRFilename << endl;
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}
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if (!MuonFakeRateFit_Pt_temp) {
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cout << "Error: Function " << fMuonFRFunctionName << " cannot be loaded. from file"
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<< fMuonFRFilename << endl;
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}
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fElectronFakeRateFit_Pt = (TF1*)(ElectronFakeRateFit_Pt_temp->Clone());
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fMuonFakeRateFit_Pt = (TF1*)(MuonFakeRateFit_Pt_temp->Clone());
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}
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}
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fElectronFakeRateHist_PtEta_sysError = (TH2F*)(ElectronFRFile->Get("RecoElectronFakeRate_PtEta_Madgraph_SysErrors"));
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fMuonFakeRateHist_PtEta_sysError = (TH2F*)(MuonFRFile->Get("TrackerMuonFakeRate_PtEta_Madgraph_SysErrors"));
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if (!fElectronFakeRateHist_PtEta_sysError) {
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cout << "Error: Histogram RecoElectronFakeRate_PtEta_Madgraph_SysErrors cannot be loaded from file "
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<< endl;
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}
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if (!fMuonFakeRateHist_PtEta_sysError) {
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cout << "Error: Histogram TrackerMuonFakeRate_PtEta_Madgraph_SysErrors cannot be loaded. from file"
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<< endl;
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}
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fElectronFakeRateHist_PtEta_sysError->SetDirectory(0);
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fMuonFakeRateHist_PtEta_sysError->SetDirectory(0);
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ElectronFRFile->Close();
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MuonFRFile->Close();
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delete ElectronFRFile;
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delete MuonFRFile;
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return true;
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRate(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the electron fake rate given pt, eta, and phi
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Double_t prob = 0.0;
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if (fIsInit) {
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if (fUse2DFakeRate) {
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if (fUseFitFunction) {
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cerr << "Error: Using 2D Fake Rates with Fit Function is not currently supported.\n";
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} else {
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if (fElectronFakeRateHist_PtEta) {
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Int_t ptbin = fElectronFakeRateHist_PtEta->GetXaxis()->FindFixBin(pt);
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Int_t etabin = fElectronFakeRateHist_PtEta->GetYaxis()->FindFixBin(eta);
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prob = fElectronFakeRateHist_PtEta->GetBinContent(ptbin,etabin);
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} else {
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cerr << "Error: fElectronFakeRateHist_PtEta was not loaded properly.\n";
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assert(false);
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}
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}
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} else {
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if (fUseFitFunction) {
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if (fElectronFakeRateFit_Pt) {
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prob = fElectronFakeRateFit_Pt->Eval(pt);
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} else {
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cerr << "Error: fElectronFakeRateFit_Pt was not loaded properly.\n";
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assert(false);
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}
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} else {
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if (fElectronFakeRateHist_Pt) {
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Int_t ptbin = fElectronFakeRateHist_Pt->GetXaxis()->FindFixBin(pt);
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prob = fElectronFakeRateHist_Pt->GetBinContent(ptbin);
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} else {
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cerr << "Error: fElectronFakeRateHist_Pt was not loaded properly.\n";
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assert(false);
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}
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}
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}
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} else {
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cerr << "Error: FakeRate was not properly initialized. \n";
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assert(false);
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}
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return prob;
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::ElectronFakeRateError(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the electron fake rate given pt, eta, and phi
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Double_t error = 0.0;
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if (fIsInit) {
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if (fUse2DFakeRate) {
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if (fUseFitFunction) {
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cerr << "Error: Using 2D Fake Rates with Fit Function is not currently supported.\n";
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} else {
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if (fElectronFakeRateHist_PtEta_sysError) {
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Int_t ptbin = fElectronFakeRateHist_PtEta_sysError->GetXaxis()->FindFixBin(pt);
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Int_t etabin = fElectronFakeRateHist_PtEta_sysError->GetYaxis()->FindFixBin(eta);
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error = fElectronFakeRateHist_PtEta_sysError->GetBinContent(ptbin,etabin);
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if (isnan(error)) {
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cerr << "Error: ElectronFakeRateError(" << ptbin << "," << etabin << ") = NAN.\n";
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error = 0;
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}
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} else {
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cerr << "Error: fElectronFakeRateHist_PtEta_sysError was not loaded properly.\n";
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assert(false);
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}
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}
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}
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} else {
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cerr << "Error: FakeRate was not properly initialized. \n";
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assert(false);
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}
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return error;
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRate(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the muon fake rate given pt, eta, and phi
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Double_t prob = 0.0;
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if (fIsInit) {
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if (fUse2DFakeRate) {
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if (fUseFitFunction) {
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cerr << "Error: Using 2D Fake Rates with Fit Function is not currently supported.\n";
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} else {
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if (fMuonFakeRateHist_PtEta) {
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Int_t ptbin = fMuonFakeRateHist_PtEta->GetXaxis()->FindFixBin(pt);
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Int_t etabin = fMuonFakeRateHist_PtEta->GetYaxis()->FindFixBin(eta);
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prob = fMuonFakeRateHist_PtEta->GetBinContent(ptbin,etabin);
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} else {
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cerr << "Error: fMuonFakeRateHist_PtEta was not loaded properly.\n";
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assert(false);
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}
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}
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} else {
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if (fUseFitFunction) {
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if (fMuonFakeRateFit_Pt) {
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prob = fMuonFakeRateFit_Pt->Eval(pt);
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} else {
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cerr << "Error: fMuonFakeRateFit_Pt was not loaded properly.\n";
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assert(false);
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}
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} else {
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if (fMuonFakeRateHist_Pt) {
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Int_t ptbin = fMuonFakeRateHist_Pt->GetXaxis()->FindFixBin(pt);
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prob = fMuonFakeRateHist_Pt->GetBinContent(ptbin);
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} else {
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cerr << "Error: fMuonFakeRateHist_Pt was not loaded properly.\n";
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assert(false);
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}
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}
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}
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} else {
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cerr << "Error: FakeRate was not properly initialized. \n";
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assert(false);
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}
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return prob;
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}
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//--------------------------------------------------------------------------------------------------
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Double_t FakeRate::MuonFakeRateError(Double_t pt, Double_t eta, Double_t phi)
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{
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// Calculate the muon fake rate given pt, eta, and phi
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Double_t error = 0.0;
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if (fIsInit) {
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if (fUse2DFakeRate) {
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if (fUseFitFunction) {
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cerr << "Error: Using 2D Fake Rates with Fit Function is not currently supported.\n";
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} else {
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if (fMuonFakeRateHist_PtEta_sysError) {
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Int_t ptbin = fMuonFakeRateHist_PtEta_sysError->GetXaxis()->FindFixBin(pt);
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Int_t etabin = fMuonFakeRateHist_PtEta_sysError->GetYaxis()->FindFixBin(eta);
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error = fMuonFakeRateHist_PtEta_sysError->GetBinContent(ptbin,etabin);
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if (isnan(error)) {
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cerr << "Error: ElectronFakeRateError(" << ptbin << "," << etabin << ") = NAN.\n";
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error = 0;
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}
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| 272 |
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} else {
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| 273 |
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cerr << "Error: fMuonFakeRateHist_PtEta_sysError was not loaded properly.\n";
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| 274 |
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assert(false);
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| 275 |
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}
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| 276 |
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}
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| 277 |
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}
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| 278 |
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} else {
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| 279 |
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cerr << "Error: FakeRate was not properly initialized. \n";
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| 280 |
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assert(false);
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| 281 |
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}
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| 282 |
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return error;
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| 283 |
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}
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