#include <HiFJGridEmptyAreaCalculator.h>

Inheritance diagram for HiFJGridEmptyAreaCalculator:

Public Member Functions
	HiFJGridEmptyAreaCalculator (const edm::ParameterSet &)

	~HiFJGridEmptyAreaCalculator () override

Public Member Functions inherited from edm::stream::EDProducer<>
	EDProducer ()=default

bool	hasAbilityToProduceInLumis () const final

bool	hasAbilityToProduceInRuns () const final

Static Public Member Functions
static void	fillDescriptions (edm::ConfigurationDescriptions &descriptions)

Private Member Functions
void	beginStream (edm::StreamID) override

void	endStream () override

void	produce (edm::Event &, const edm::EventSetup &) override

setting a new event
const double	twopi_ = 2*M_PI
	information about the grid More...

double	ymin_
	internal parameters for grid More...

double	ymax_

double	dy_

double	dphi_

double	tileArea_

double	dyJet_

double	yminJet_

double	ymaxJet_

double	totalInboundArea_

double	etaminJet_

double	etamaxJet_

int	ny_

int	nphi_

int	ntotal_

int	ntotalJet_

int	nyJet_

double	gridWidth_
	input parameters More...

double	band_

int	hiBinCut_

bool	doCentrality_

bool	keepGridInfo_

std::vector< double >	rhoVsEta_

std::vector< double >	meanRhoVsEta_

std::vector< double >	etaMaxGrid_

std::vector< double >	etaMinGrid_

edm::EDGetTokenT< edm::View< reco::Jet > >	jetsToken_
	input tokens More...

edm::EDGetTokenT< reco::PFCandidateCollection >	pfCandsToken_

edm::EDGetTokenT< std::vector< double > >	mapEtaToken_

edm::EDGetTokenT< std::vector< double > >	mapRhoToken_

edm::EDGetTokenT< std::vector< double > >	mapRhoMToken_

edm::EDGetTokenT< int >	centralityBinToken_

void	setupGrid (double eta_min, double eta_max)
	configure the grid More...

void	setupGridJet (const reco::Jet *jet)

int	tileIndexJet (const reco::PFCandidate *pfCand)
	retrieve the grid cell index for a given PseudoJet More...

int	tileIndexEta (const reco::PFCandidate *pfCand)

int	tileIndexEtaJet (const reco::PFCandidate *pfCand)

int	tileIndexPhi (const reco::PFCandidate *pfCand)

int	numJetGridCells (std::vector< std::pair< int, int > > &indices)
	number of grid cells that overlap with jet constituents filling in the in between area More...

void	calculateAreaFractionOfJets (const edm::Event &iEvent, const edm::EventSetup &iSetup)

void	calculateGridRho (const edm::Event &iEvent, const edm::EventSetup &iSetup)

int	n_tiles ()

Additional Inherited Members
Public Types inherited from edm::stream::EDProducer<>
typedef CacheContexts< T... >	CacheTypes

typedef CacheTypes::GlobalCache	GlobalCache

typedef AbilityChecker< T... >	HasAbility

typedef CacheTypes::LuminosityBlockCache	LuminosityBlockCache

typedef LuminosityBlockContextT< LuminosityBlockCache, RunCache, GlobalCache >	LuminosityBlockContext

typedef CacheTypes::LuminosityBlockSummaryCache	LuminosityBlockSummaryCache

typedef CacheTypes::RunCache	RunCache

typedef RunContextT< RunCache, GlobalCache >	RunContext

typedef CacheTypes::RunSummaryCache	RunSummaryCache

Detailed Description

Definition at line 25 of file HiFJGridEmptyAreaCalculator.h.

Constructor & Destructor Documentation

HiFJGridEmptyAreaCalculator::HiFJGridEmptyAreaCalculator ( const edm::ParameterSet & iConfig )

explicit

Definition at line 17 of file HiFJGridEmptyAreaCalculator.cc.

References centralityBinToken_, dphi_, dy_, dyJet_, etamaxJet_, etaminJet_, edm::ParameterSet::getParameter(), jetsToken_, keepGridInfo_, mapEtaToken_, mapRhoMToken_, mapRhoToken_, nphi_, ntotal_, ntotalJet_, ny_, nyJet_, pfCandsToken_, tileArea_, totalInboundArea_, ymax_, ymaxJet_, ymin_, and yminJet_.

                                                                                       :
   gridWidth_(iConfig.getParameter<double>("gridWidth")),
   band_(iConfig.getParameter<double>("bandWidth")),
   hiBinCut_(iConfig.getParameter<int>("hiBinCut")),
   doCentrality_(iConfig.getParameter<bool>("doCentrality")),
   keepGridInfo_(iConfig.getParameter<bool>("keepGridInfo"))
 {
   ymin_ = -99;
   ymax_ = -99;
   dy_ = -99;
   dphi_ = -99;
   tileArea_ = - 99;
   
   dyJet_ = 99;
   yminJet_ = - 99;
   ymaxJet_ = -99;
   totalInboundArea_ = -99;
   etaminJet_= -99;
   etamaxJet_ = -99;
   
   ny_ = 0;
   nphi_ = 0;
   ntotal_ = 0;
  
   ntotalJet_ = 0;
   nyJet_ = 0;
     
   pfCandsToken_ = consumes<reco::PFCandidateCollection>(iConfig.getParameter<edm::InputTag>( "pfCandSource" ));
   mapEtaToken_ = consumes<std::vector<double> >(iConfig.getParameter<edm::InputTag>( "mapEtaEdges" ));
   mapRhoToken_ = consumes<std::vector<double> >(iConfig.getParameter<edm::InputTag>( "mapToRho" ));
   mapRhoMToken_ = consumes<std::vector<double> >(iConfig.getParameter<edm::InputTag>( "mapToRhoM" ));
   jetsToken_ = consumes<edm::View<reco::Jet> >(iConfig.getParameter<edm::InputTag>( "jetSource" ));
   centralityBinToken_ = consumes<int>(iConfig.getParameter<edm::InputTag>("CentralityBinSrc"));
 
   //register your products
   produces<std::vector<double > >("mapEmptyCorrFac"); 
   produces<std::vector<double > >("mapToRhoCorr");
   produces<std::vector<double > >("mapToRhoMCorr");
   produces<std::vector<double > >("mapToRhoCorr1Bin");
   produces<std::vector<double > >("mapToRhoMCorr1Bin");
   //rho calculation on a grid using median
   if(keepGridInfo_){
     produces<std::vector<double > >("mapRhoVsEtaGrid");
     produces<std::vector<double > >("mapMeanRhoVsEtaGrid");
     produces<std::vector<double > >("mapEtaMaxGrid");
     produces<std::vector<double > >("mapEtaMinGrid");
   }
 }

HiFJGridEmptyAreaCalculator::~HiFJGridEmptyAreaCalculator ( )

override

Definition at line 67 of file HiFJGridEmptyAreaCalculator.cc.

 {
  
    // do anything here that needs to be done at desctruction time
    // (e.g. close files, deallocate resources etc.)
 
 }

Member Function Documentation

void HiFJGridEmptyAreaCalculator::beginStream ( edm::StreamID )

overrideprivate

Definition at line 460 of file HiFJGridEmptyAreaCalculator.cc.

461 {

462 }

void HiFJGridEmptyAreaCalculator::calculateAreaFractionOfJets	(	const edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

private

calculates the area of jets that fall within the eta range by scaling kt areas using grid areas

Definition at line 239 of file HiFJGridEmptyAreaCalculator.cc.

References etamaxJet_, etaminJet_, edm::Event::getByToken(), metsig::jet, METSignificanceParams_cfi::jeta, fwrapper::jets, jetsToken_, numJetGridCells(), setupGridJet(), tileIndexEtaJet(), tileIndexPhi(), totalInboundArea_, and twopi_.

Referenced by produce().

                                                                                                            {
   edm::Handle<edm::View<reco::Jet> > jets;
   iEvent.getByToken(jetsToken_, jets);
   
   //calculate jet kt area fraction inside boundary by grid
   totalInboundArea_ = 0;
   
   for(auto jet = jets->begin(); jet != jets->end(); ++jet) {
     if (jet->eta() < etaminJet_ || jet->eta() > etamaxJet_) continue;
    
     double areaKt = jet->jetArea(); 
     setupGridJet(&*jet);
     std::vector<std::pair<int, int> > pfIndicesJet;
     std::vector<std::pair<int, int> > pfIndicesJetInbound;
     int nConstitJet = 0;
     int nConstitJetInbound = 0;
     for(auto daughter : jet->getJetConstituentsQuick()){
       auto pfCandidate = static_cast<const reco::PFCandidate*>(daughter);
 
       int jeta = tileIndexEtaJet(&*pfCandidate);
       int jphi = tileIndexPhi(&*pfCandidate);
       pfIndicesJet.push_back(std::make_pair(jphi, jeta));
       nConstitJet++;
       if (pfCandidate->eta() < etaminJet_ && pfCandidate->eta() > etamaxJet_) continue;
       pfIndicesJetInbound.push_back(std::make_pair(jphi, jeta));
       nConstitJetInbound++;
    }   
    
    //if the jet is well within the eta range just add the area
    if(nConstitJet == nConstitJetInbound){
     totalInboundArea_ += areaKt;
     continue;
    }
    
    //for jets that fall outside of eta range calculate fraction of area
    //inside the range with a grid
    int nthis = 0;
    if (nConstitJet > 0) nthis = numJetGridCells(pfIndicesJet);
 
    int nthisInbound = 0;
    if (nConstitJetInbound > 0) nthisInbound = numJetGridCells(pfIndicesJetInbound);
    
   
    double fractionArea = ((double)nthisInbound)/((double)nthis);
    totalInboundArea_ += areaKt*fractionArea;    
   } 
   
   //divide by the total area in that range
   totalInboundArea_ /= ((etamaxJet_ - etaminJet_)*twopi_);
   
   //the fraction can still be greater than 1 because kt area fraction inside 
   //the range can differ from what we calculated with the grid
   if (totalInboundArea_ > 1) totalInboundArea_ = 1;
 }

void HiFJGridEmptyAreaCalculator::calculateGridRho	(	const edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

private

Definition at line 180 of file HiFJGridEmptyAreaCalculator.cc.

References reco::LeafCandidate::eta(), edm::Event::getByToken(), createfilelist::int, METSignificanceParams_cfi::jeta, meanRhoVsEta_, nphi_, ny_, pfCandsToken_, edm::Handle< T >::product(), reco::LeafCandidate::pt(), rhoVsEta_, tileArea_, tileIndexEta(), tileIndexPhi(), ymax_, and ymin_.

Referenced by produce().

                                                                                                  {
 
   vector<vector<double>> scalarPt(ny_, vector<double>(nphi_, 0.0));
   
   edm::Handle<reco::PFCandidateCollection> pfCands;
   iEvent.getByToken(pfCandsToken_, pfCands);
   const reco::PFCandidateCollection *pfCandidateColl = pfCands.product();
   for(unsigned icand = 0; icand < pfCandidateColl->size(); icand++) {
    const reco::PFCandidate pfCandidate = pfCandidateColl->at(icand);
    //use ony the particles within the eta range
    if (pfCandidate.eta() < ymin_ || pfCandidate.eta() > ymax_ ) continue;
    int jeta = tileIndexEta(&pfCandidate);
    int jphi = tileIndexPhi(&pfCandidate);
    scalarPt[jeta][jphi] += pfCandidate.pt();
   }
   
   rhoVsEta_.resize(ny_);
   meanRhoVsEta_.resize(ny_);
   for(int jeta = 0; jeta < ny_; jeta++){
   
     rhoVsEta_[jeta] = 0;
     meanRhoVsEta_[jeta] = 0;
     vector<double> rhoVsPhi;
     int nEmpty = 0;
     
     for(int jphi = 0; jphi < nphi_; jphi++){
       double binpt = scalarPt[jeta][jphi];
       meanRhoVsEta_[jeta] += binpt;
       //fill in the vector for median calculation
       if(binpt > 0) rhoVsPhi.push_back(binpt);
       else nEmpty++;
     }
     meanRhoVsEta_[jeta] /= ((double)nphi_);
     meanRhoVsEta_[jeta] /= tileArea_;
 
     //median calculation
     sort(rhoVsPhi.begin(), rhoVsPhi.end());
     //use only the nonzero grid cells for median calculation;
     int nFull = nphi_ - nEmpty;
     if(nFull == 0){
       rhoVsEta_[jeta] = 0;
       continue;
     }
     if (nFull  % 2 == 0)
       {
         rhoVsEta_[jeta] = (rhoVsPhi[(int)(nFull / 2 - 1)] + rhoVsPhi[(int)(nFull / 2)]) / 2;
       }
     else 
       {
         rhoVsEta_[jeta] = rhoVsPhi[(int)(nFull / 2)];
       }
     //correct for empty cells 
     rhoVsEta_[jeta] *= (((double) nFull)/((double) nphi_));
     //normalize to area
     rhoVsEta_[jeta] /= tileArea_;
   }
 }

void HiFJGridEmptyAreaCalculator::endStream ( )

overrideprivate

Definition at line 465 of file HiFJGridEmptyAreaCalculator.cc.

465 {

466 }

void HiFJGridEmptyAreaCalculator::fillDescriptions ( edm::ConfigurationDescriptions & descriptions )

static

Definition at line 468 of file HiFJGridEmptyAreaCalculator.cc.

References edm::ConfigurationDescriptions::add(), edm::ParameterSetDescription::add(), and DEFINE_FWK_MODULE.

                                                                                              {
   edm::ParameterSetDescription desc;
   desc.add<edm::InputTag>("jetSource",edm::InputTag("kt4PFJets"));
   desc.add<edm::InputTag>("CentralityBinSrc",edm::InputTag("centralityBin"));
   desc.add<edm::InputTag>("mapEtaEdges",edm::InputTag("mapEtaEdges"));
   desc.add<edm::InputTag>("mapToRho",edm::InputTag("mapToRho"));
   desc.add<edm::InputTag>("mapToRhoM",edm::InputTag("mapToRhoM"));
   desc.add<edm::InputTag>("pfCandSource",edm::InputTag("particleFlow"));
   desc.add<double>("gridWidth",0.05);
   desc.add<double>("bandWidth",0.2);
   desc.add<bool>("doCentrality", true);
   desc.add<int>("hiBinCut",100);
   desc.add<bool>("keepGridInfo",false);
   descriptions.add("hiFJGridEmptyAreaCalculator",desc);
 }

int HiFJGridEmptyAreaCalculator::n_tiles ( )

inlineprivate

Definition at line 108 of file HiFJGridEmptyAreaCalculator.h.

References ntotal_.

108 {return ntotal_;}

HiFJGridEmptyAreaCalculator::ntotal_

int ntotal_

Definition: HiFJGridEmptyAreaCalculator.h:90

int HiFJGridEmptyAreaCalculator::numJetGridCells ( std::vector< std::pair< int, int > > & indices )

private

number of grid cells that overlap with jet constituents filling in the in between area

Definition at line 432 of file HiFJGridEmptyAreaCalculator.cc.

References METSignificanceParams_cfi::jeta.

Referenced by calculateAreaFractionOfJets().

 {
   int ngrid = 0;
   //sort phi eta grid indices in phi
   std::sort(indices.begin(),indices.end());
   int lowestJPhi = indices[0].first;
   int lowestJEta = indices[0].second;
   int highestJEta = lowestJEta;
     
   //for each fixed phi value calculate the number of grids in eta
   for(unsigned int iconst = 1; iconst < indices.size(); iconst++){
      int jphi = indices[iconst].first;
      int jeta = indices[iconst].second;
      if (jphi == lowestJPhi){
       if (jeta < lowestJEta) lowestJEta = jeta;
       if (jeta > highestJEta) highestJEta = jeta;
      }else{
       lowestJPhi = jphi;
       ngrid += highestJEta - lowestJEta + 1;
       lowestJEta = jeta;
       highestJEta = jeta;
     }
   }
   ngrid += highestJEta - lowestJEta + 1;
   return ngrid;
 }

void HiFJGridEmptyAreaCalculator::produce	(	edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

overrideprivate

Definition at line 76 of file HiFJGridEmptyAreaCalculator.cc.

References band_, calculateAreaFractionOfJets(), calculateGridRho(), centralityBinToken_, doCentrality_, MillePedeFileConverter_cfg::e, etaMaxGrid_, etamaxJet_, etaMinGrid_, etaminJet_, edm::Event::getByToken(), hiBinCut_, createfilelist::int, keepGridInfo_, mapEtaToken_, mapRhoMToken_, mapRhoToken_, meanRhoVsEta_, eostools::move(), ny_, edm::Event::put(), rho, rhoVsEta_, setupGrid(), and totalInboundArea_.

 {
   using namespace edm;
   //Values from rho calculator  
   edm::Handle<std::vector<double>> mapEtaRanges;
   iEvent.getByToken(mapEtaToken_, mapEtaRanges);
   
   edm::Handle<std::vector<double>> mapRho;
   iEvent.getByToken(mapRhoToken_, mapRho);
 
   edm::Handle<std::vector<double>> mapRhoM;  
   iEvent.getByToken(mapRhoMToken_, mapRhoM);
 
   // if doCentrality is set to true calculate empty area correction
   // for only events with hiBin > hiBinCut  
   int hiBin = -1;
   bool doEmptyArea = true; 
   if(doCentrality_){
     edm::Handle<int> cbin;
     iEvent.getByToken(centralityBinToken_,cbin);
     hiBin = *cbin;
    
     if(hiBin < hiBinCut_) doEmptyArea = false;
   }
   
   //Define output vectors
   int neta = (int)mapEtaRanges->size();
    
   auto mapToRhoCorrOut = std::make_unique<std::vector<double>>(neta-1,1e-6);
   auto mapToRhoMCorrOut = std::make_unique<std::vector<double>>(neta-1,1e-6);
   auto mapToRhoCorr1BinOut = std::make_unique<std::vector<double>>(neta-1,1e-6);
   auto mapToRhoMCorr1BinOut = std::make_unique<std::vector<double>>(neta-1,1e-6);
 
   setupGrid(mapEtaRanges->at(0), mapEtaRanges->at(neta-1));
   
   //calculate empty area correction over full acceptance leaving eta bands on the sides
   double allAcceptanceCorr = 1;
   if(doEmptyArea){
     etaminJet_ = mapEtaRanges->at(0) - band_;
     etamaxJet_ = mapEtaRanges->at(neta-1) + band_;
   
     calculateAreaFractionOfJets(iEvent, iSetup);
   
     allAcceptanceCorr =  totalInboundArea_;
   }
   
   //calculate empty area correction in each eta range
   for(int ieta = 0; ieta<(neta-1); ieta++) {
    
     double correctionKt = 1;   
     double rho = mapRho->at(ieta);
     double rhoM = mapRhoM->at(ieta);
     
     if(doEmptyArea){
       double etamin = mapEtaRanges->at(ieta);
       double etamax = mapEtaRanges->at(ieta+1);
       
       etaminJet_ = etamin + band_;  
       etamaxJet_ = etamax - band_;  
    
       calculateAreaFractionOfJets(iEvent, iSetup);
       correctionKt = totalInboundArea_;
     }
    
     mapToRhoCorrOut->at(ieta) = correctionKt*rho;
     mapToRhoMCorrOut->at(ieta) = correctionKt*rhoM;
    
     mapToRhoCorr1BinOut->at(ieta) = allAcceptanceCorr*rho;
     mapToRhoMCorr1BinOut->at(ieta) = allAcceptanceCorr*rhoM;
   }
 
   iEvent.put(std::move(mapToRhoCorrOut),"mapToRhoCorr");
   iEvent.put(std::move(mapToRhoMCorrOut),"mapToRhoMCorr");
   iEvent.put(std::move(mapToRhoCorr1BinOut),"mapToRhoCorr1Bin");
   iEvent.put(std::move(mapToRhoMCorr1BinOut),"mapToRhoMCorr1Bin");
   
   //calculate rho from grid as a function of eta over full range using PF candidates
   
   auto mapRhoVsEtaGridOut = std::make_unique<std::vector<double>>(ny_,0.);
   auto mapMeanRhoVsEtaGridOut = std::make_unique<std::vector<double>>(ny_,0.);
   auto mapEtaMaxGridOut = std::make_unique<std::vector<double>>(ny_,0.);
   auto mapEtaMinGridOut = std::make_unique<std::vector<double>>(ny_,0.);
   calculateGridRho(iEvent, iSetup);
   if(keepGridInfo_){
     for(int ieta = 0; ieta < ny_; ieta++) {
       mapRhoVsEtaGridOut->at(ieta) = rhoVsEta_[ieta];
       mapMeanRhoVsEtaGridOut->at(ieta) = meanRhoVsEta_[ieta];
       mapEtaMaxGridOut->at(ieta) = etaMaxGrid_[ieta];
       mapEtaMinGridOut->at(ieta) = etaMinGrid_[ieta];
     }
 
     iEvent.put(std::move(mapRhoVsEtaGridOut),"mapRhoVsEtaGrid");
     iEvent.put(std::move(mapMeanRhoVsEtaGridOut),"mapMeanRhoVsEtaGrid");
     iEvent.put(std::move(mapEtaMaxGridOut),"mapEtaMaxGrid");
     iEvent.put(std::move(mapEtaMinGridOut),"mapEtaMinGrid");
   }
 }

void HiFJGridEmptyAreaCalculator::setupGrid	(	double	eta_min,
		double	eta_max
	)

private

configure the grid

tell the background estimator that it has a new event, composed of the specified particles.

Definition at line 301 of file HiFJGridEmptyAreaCalculator.cc.

References dphi_, dy_, etaMaxGrid_, etaMinGrid_, gridWidth_, createfilelist::int, METSignificanceParams_cfi::jeta, nphi_, ntotal_, ny_, tileArea_, twopi_, ymax_, and ymin_.

Referenced by produce().

                                                                    {
 
   // since we've exchanged the arguments of the grid constructor,
   // there's a danger of calls with exchanged ymax,spacing arguments -- 
   // the following check should catch most such situations.
   ymin_ = etamin;
   ymax_ = etamax;
   
   assert(ymax_ - ymin_ >= gridWidth_);
 
   // this grid-definition code is becoming repetitive -- it should
   // probably be moved somewhere central...
   double nyDouble = (ymax_ - ymin_) / gridWidth_;
   ny_ = int(nyDouble+0.5);
   dy_ = (ymax_ - ymin_) / ny_;
   
   nphi_ = int (twopi_ / gridWidth_ + 0.5);
   dphi_ = twopi_ / nphi_;
 
   // some sanity checking (could throw a fastjet::Error)
   assert(ny_ >= 1 && nphi_ >= 1);
 
   ntotal_ = nphi_ * ny_;
   //_scalar_pt.resize(_ntotal);
   tileArea_ = dy_ * dphi_;
   
   
   etaMaxGrid_.resize(ny_);
   etaMinGrid_.resize(ny_);
   for(int jeta = 0; jeta < ny_; jeta++){
    etaMinGrid_[jeta] = etamin + dy_*((double)jeta);
    etaMaxGrid_[jeta] = etamin + dy_*((double)jeta + 1.);
   }
 }

void HiFJGridEmptyAreaCalculator::setupGridJet ( const reco::Jet * jet )

private

Definition at line 386 of file HiFJGridEmptyAreaCalculator.cc.

References dyJet_, reco::LeafCandidate::eta(), gridWidth_, createfilelist::int, nphi_, ntotalJet_, nyJet_, ymaxJet_, and yminJet_.

Referenced by calculateAreaFractionOfJets().

                                                             {
 
   // since we've exchanged the arguments of the grid constructor,
   // there's a danger of calls with exchanged ymax,spacing arguments -- 
   // the following check should catch most such situations.
   yminJet_ = jet->eta()-0.6;
   ymaxJet_ = jet->eta()+0.6;
   
   assert(ymaxJet_ - yminJet_ >= gridWidth_);
 
   // this grid-definition code is becoming repetitive -- it should
   // probably be moved somewhere central...
   double nyDouble = (ymaxJet_ - yminJet_) / gridWidth_;
   nyJet_ = int(nyDouble+0.5);
   dyJet_ = (ymaxJet_ - yminJet_) / nyJet_;
   
   assert(nyJet_ >= 1);
 
   ntotalJet_ = nphi_ * nyJet_;
   //_scalar_pt.resize(_ntotal);
 }

int HiFJGridEmptyAreaCalculator::tileIndexEta ( const reco::PFCandidate * pfCand )

private

Definition at line 361 of file HiFJGridEmptyAreaCalculator.cc.

References dy_, reco::LeafCandidate::eta(), createfilelist::int, ny_, and ymin_.

Referenced by calculateGridRho().

                                                                         {
   // directly taking int does not work for values between -1 and 0
   // so use floor instead
   // double iy_double = (p.rap() - _ymin) / _dy;
   // if (iy_double < 0.0) return -1;
   // int iy = int(iy_double);
   // if (iy >= _ny) return -1;
 
   // writing it as below gives a huge speed gain (factor two!). Even
   // though answers are identical and the routine here is not the
   // speed-critical step. It's not at all clear why.
   int iy = int(floor( (pfCand->eta() - ymin_) / dy_ ));
   if (iy < 0 || iy >= ny_) return -1;
   
   assert (iy < ny_ && iy >= 0);
 
   return iy;
 }

int HiFJGridEmptyAreaCalculator::tileIndexEtaJet ( const reco::PFCandidate * pfCand )

private

Definition at line 412 of file HiFJGridEmptyAreaCalculator.cc.

References dy_, reco::LeafCandidate::eta(), createfilelist::int, nyJet_, and yminJet_.

Referenced by calculateAreaFractionOfJets().

                                                                           {
   // directly taking int does not work for values between -1 and 0
   // so use floor instead
   // double iy_double = (p.rap() - _ymin) / _dy;
   // if (iy_double < 0.0) return -1;
   // int iy = int(iy_double);
   // if (iy >= _ny) return -1;
 
   // writing it as below gives a huge speed gain (factor two!). Even
   // though answers are identical and the routine here is not the
   // speed-critical step. It's not at all clear why.
   int iyjet = int(floor( (pfCand->eta() - yminJet_) / dy_ ));
   if (iyjet < 0 || iyjet >= nyJet_) return -1;
   
   assert (iyjet < nyJet_ && iyjet >= 0);
 
   return iyjet;
 }

int HiFJGridEmptyAreaCalculator::tileIndexJet ( const reco::PFCandidate * pfCand )

private

retrieve the grid cell index for a given PseudoJet

int HiFJGridEmptyAreaCalculator::tileIndexPhi ( const reco::PFCandidate * pfCand )

private

Definition at line 339 of file HiFJGridEmptyAreaCalculator.cc.

References dphi_, createfilelist::int, nphi_, reco::LeafCandidate::phi(), and twopi_.

Referenced by calculateAreaFractionOfJets(), and calculateGridRho().

                                                                         {
   // directly taking int does not work for values between -1 and 0
   // so use floor instead
   // double iy_double = (p.rap() - _ymin) / _dy;
   // if (iy_double < 0.0) return -1;
   // int iy = int(iy_double);
   // if (iy >= _ny) return -1;
 
   // writing it as below gives a huge speed gain (factor two!). Even
   // though answers are identical and the routine here is not the
   // speed-critical step. It's not at all clear why.
  
   int iphi = int( (pfCand->phi() + (twopi_/2.))/dphi_ );
   assert(iphi >= 0 && iphi <= nphi_);
   if (iphi == nphi_) iphi = 0; // just in case of rounding errors
 
   return iphi;
 }