Inheritance diagram for JetResolutionDemo:

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

	~JetResolutionDemo ()

Public Member Functions inherited from edm::EDAnalyzer
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)

	EDAnalyzer ()

ModuleDescription const &	moduleDescription () const

std::string	workerType () const

virtual	~EDAnalyzer ()

Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const

	EDConsumerBase ()

ProductHolderIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const

void	itemsMayGet (BranchType, std::vector< ProductHolderIndexAndSkipBit > &) const

void	itemsToGet (BranchType, std::vector< ProductHolderIndexAndSkipBit > &) const

std::vector < ProductHolderIndexAndSkipBit > const &	itemsToGetFromEvent () const

void	labelsForToken (EDGetToken iToken, Labels &oLabels) const

void	modulesDependentUpon (const std::string &iProcessName, std::vector< const char * > &oModuleLabels) const

void	modulesWhoseProductsAreConsumed (std::vector< ModuleDescription const * > &modules, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const

bool	registeredToConsume (ProductHolderIndex, bool, BranchType) const

bool	registeredToConsumeMany (TypeID const &, BranchType) const

void	updateLookup (BranchType iBranchType, ProductHolderIndexHelper const &)

virtual	~EDConsumerBase ()

Private Member Functions
virtual void	analyze (const edm::Event &, const edm::EventSetup &) override

virtual void	endJob () override

Private Attributes
edm::Service< TFileService >	fs

bool	m_debug = false

edm::EDGetTokenT< std::vector < pat::Jet > >	m_jets_token

std::string	m_payload

TH2 *	m_res_vs_eta = 0

std::string	m_resolutions_file

std::string	m_scale_factors_file

bool	m_use_conddb = false

Additional Inherited Members
Public Types inherited from edm::EDAnalyzer
typedef EDAnalyzer	ModuleType

Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels

Static Public Member Functions inherited from edm::EDAnalyzer
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &)

Protected Member Functions inherited from edm::EDConsumerBase
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)

EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)

ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...

template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()

void	consumesMany (const TypeToGet &id)

template<BranchType B>
void	consumesMany (const TypeToGet &id)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

Detailed Description

Definition at line 25 of file JetResolutionDemo.cc.

Constructor & Destructor Documentation

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

explicit

Definition at line 51 of file JetResolutionDemo.cc.

References contentValuesFiles::fullPath, edm::ParameterSet::getParameter(), edm::ParameterSet::getUntrackedParameter(), m_debug, m_jets_token, m_payload, m_resolutions_file, m_scale_factors_file, m_use_conddb, and AlCaHLTBitMon_QueryRunRegistry::string.

 {
     m_jets_token = consumes<std::vector<pat::Jet>>(iConfig.getParameter<edm::InputTag>("jets"));
     m_debug      = iConfig.getUntrackedParameter<bool>("debug", false);
     m_use_conddb = iConfig.getUntrackedParameter<bool>("useCondDB", false);
 
     if (m_use_conddb)
         m_payload    = iConfig.getParameter<std::string>("payload");
     else {
         m_resolutions_file = iConfig.getParameter<edm::FileInPath>("resolutionsFile").fullPath();
         m_scale_factors_file = iConfig.getParameter<edm::FileInPath>("scaleFactorsFile").fullPath();
     }
 }

JetResolutionDemo::~JetResolutionDemo ( )

Definition at line 65 of file JetResolutionDemo.cc.

 {
 
 }

Member Function Documentation

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

overrideprivatevirtual

Implements edm::EDAnalyzer.

Definition at line 71 of file JetResolutionDemo.cc.

References gather_cfg::cout, DOWN, JME::JetResolution::dump(), EnergyCorrector::etas, fs, JME::JetResolution::get(), JME::JetResolutionScaleFactor::get(), JME::JetResolutionObject::Definition::getBins(), edm::Event::getByToken(), JME::JetResolutionObject::getDefinition(), JME::JetResolutionObject::getRecords(), JME::JetResolution::getResolution(), JME::JetResolution::getResolutionObject(), JME::JetResolutionScaleFactor::getScaleFactor(), i, metsig::jet, JME::JetEta, JME::JetPt, fwrapper::jets, m_debug, m_jets_token, m_payload, m_res_vs_eta, m_resolutions_file, m_scale_factors_file, m_use_conddb, TFileService::make(), alignCSCRings::r, diffTwoXMLs::r2, record, dtDQMClient_cfg::resolution, JME::JetParameters::set(), JME::JetParameters::setJetEta(), JME::JetParameters::setJetPt(), and UP.

 {
 
     edm::Handle<std::vector<pat::Jet>> jets;
     iEvent.getByToken(m_jets_token, jets);
 
     // Access jet resolution and scale factor from the condition database
     // or from text files
     JME::JetResolution resolution;
     JME::JetResolutionScaleFactor res_sf;
 
     // Two differents way to create a class instance
     if (m_use_conddb) {
         // First way, using the get() static method
         resolution = JME::JetResolution::get(iSetup, m_payload);
         res_sf = JME::JetResolutionScaleFactor::get(iSetup, m_payload);
     } else {
         // Second way, using the constructor
         resolution = JME::JetResolution(m_resolutions_file);
         res_sf = JME::JetResolutionScaleFactor(m_scale_factors_file);
     }
 
     if (m_debug) {
         // Dump resolution
         resolution.dump();
     }
 
     if (! m_res_vs_eta) {
         
         // Advanced usage. Create the histogram by retriving the eta binning directly from the JetResolutionObject. This suppose you need that the parametrization only depends on eta.
 
         // Get the list of bins of this object
         const std::vector<JME::Binning>& bins = resolution.getResolutionObject()->getDefinition().getBins();
 
         // Check that the first bin is eta
         if ((bins.size()) && (bins[0] == JME::Binning::JetEta)) {
         
             const std::vector<JME::JetResolutionObject::Record> records = resolution.getResolutionObject()->getRecords();
             // Get all records from the object. Each record correspond to a different binning and different parameters
                 
             std::vector<float> etas;
             for (const auto& record: records) {
                 if (etas.empty()) {
                     etas.push_back(record.getBinsRange()[0].min);
                     etas.push_back(record.getBinsRange()[0].max);
                 } else {
                     etas.push_back(record.getBinsRange()[0].max);
                 }   
             }
 
             std::vector<float> res;
             for (std::size_t i = 0; i < 40; i++) {
                 res.push_back(i * 0.005);
             }
 
             m_res_vs_eta = fs->make<TH2F>("res_vs_eta", "res_vs_eta", etas.size() - 1, &etas[0], res.size() - 1, &res[0]);
         }
     }
 
     for (const auto& jet: *jets) {
         if (m_debug) {
             std::cout << "New jet; pt=" << jet.pt() << "  eta=" << jet.eta() << "  phi=" << jet.phi() << "  e=" << jet.energy() << std::endl;
         }
 
 
         // Get resolution for this jet
         // The method to use is getResolution(const JME::JetParameters& parameters) from a JetResolution object
         
         // You *must* now in advance which variables are needed for getting the resolution. For the moment, only pt and eta are needed, but this will
         // probably change in the futur when PU dependency is added. Please keep an eye on the twiki page
         //     https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookJetEnergyResolution
         // to stay up-to-date. All currently supported parameters (ie, 'set' functions) are available here:
         //     https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookJetEnergyResolution#List_of_supported_parameters
         
 
         // Three way to create a JetParameters object
 
         // First, using 'set' functions
         JME::JetParameters parameters_1;
         parameters_1.setJetPt(jet.pt());
         parameters_1.setJetEta(jet.eta());
 
         // You can also chain calls
 
         JME::JetParameters parameters_2;
         parameters_2.setJetPt(jet.pt()).setJetEta(jet.eta());
 
         // Second, using the set() function
         JME::JetParameters parameters_3;
         parameters_3.set(JME::Binning::JetPt, jet.pt());
         parameters_3.set({JME::Binning::JetEta, jet.eta()});
 
         // Or
 
         JME::JetParameters parameters_4;
         parameters_4.set(JME::Binning::JetPt, jet.pt()).set(JME::Binning::JetEta, jet.eta());
     
         // Third, using a initializer_list
         JME::JetParameters parameters_5 = {{JME::Binning::JetPt, jet.pt()}, {JME::Binning::JetEta, jet.eta()}};
 
         // Now, get the resolution
 
         float r = resolution.getResolution(parameters_1);
         if (m_debug) {
             std::cout << "Resolution with parameters_1: " << r << std::endl;
             std::cout << "Resolution with parameters_2: " << resolution.getResolution(parameters_2) << std::endl;
             std::cout << "Resolution with parameters_3: " << resolution.getResolution(parameters_3) << std::endl;
             std::cout << "Resolution with parameters_4: " << resolution.getResolution(parameters_4) << std::endl;
             std::cout << "Resolution with parameters_5: " << resolution.getResolution(parameters_5) << std::endl;
 
             // You can also use a shortcut to get the resolution
             float r2 = resolution.getResolution({{JME::Binning::JetPt, jet.pt()}, {JME::Binning::JetEta, jet.eta()}});
             std::cout << "Resolution using shortcut   : " << r2 << std::endl;
         }
 
         m_res_vs_eta->Fill(jet.eta(), r);
 
         // We do the same thing to access the scale factors
         float sf = res_sf.getScaleFactor({{JME::Binning::JetEta, jet.eta()}});
 
         // Access up and down variation of the scale factor
         float sf_up = res_sf.getScaleFactor({{JME::Binning::JetEta, jet.eta()}}, Variation::UP);
         float sf_down = res_sf.getScaleFactor({{JME::Binning::JetEta, jet.eta()}}, Variation::DOWN);
 
         if (m_debug) {
             std::cout << "Scale factors (Nominal / Up / Down) : " << sf << " / " << sf_up << " / " << sf_down << std::endl;
         }
     }
 }