Example class that can be used both within FWLite and within the full framework. More...

#include <PhysicsTools/UtilAlgos/interface/AnalysisTasksAnalyzerJEC.h>

Inheritance diagram for AnalysisTasksAnalyzerJEC:

Public Member Functions
	AnalysisTasksAnalyzerJEC (const edm::ParameterSet &cfg, TFileDirectory &fs)
	default constructor
void	analyze (const edm::EventBase &event)
	everything that needs to be done during the event loop
void	beginJob ()
	everything that needs to be done before the event loop
void	endJob ()
	everything that needs to be done after the event loop
virtual	~AnalysisTasksAnalyzerJEC ()
	default destructor
Private Attributes
bool	help_
std::map< std::string, TH2 * >	hists_
	histograms
std::string	jecLevel_
unsigned int	jetInEvents_
edm::InputTag	Jets_
	input tag for mouns
std::string	patJetCorrFactors_

Detailed Description

Example class that can be used both within FWLite and within the full framework.

This is an example for keeping classes that can be used both within FWLite and within the full framework. The class is derived from the BasicAnalyzer base class, which is an interface for the two wrapper classes EDAnalyzerWrapper and FWLiteAnalyzerWrapper. The latter provides basic configuration file reading and event looping equivalent to the FWLiteHistograms executable of this package. You can see the FWLiteAnalyzerWrapper class at work in the FWLiteWithBasicAnalyzer executable of this package.

Definition at line 19 of file AnalysisTasksAnalyzerJEC.h.

Constructor & Destructor Documentation

AnalysisTasksAnalyzerJEC::AnalysisTasksAnalyzerJEC	(	const edm::ParameterSet &	cfg,
		TFileDirectory &	fs
	)

default constructor

Definition at line 8 of file AnalysisTasksAnalyzerJEC.cc.

References hists_, jetInEvents_, and TFileDirectory::make().

                                                                                                : 
  edm::BasicAnalyzer::BasicAnalyzer(cfg, fs),
  Jets_(cfg.getParameter<edm::InputTag>("Jets")),
  jecLevel_(cfg.getParameter<std::string>("jecLevel")),
  patJetCorrFactors_(cfg.getParameter<std::string>("patJetCorrFactors")),
  help_(cfg.getParameter<bool>("help"))
{
 
  hists_["Response"  ] = fs.make<TH2F>("Response"  , "response; #eta;p_{T}(reco)/p_{T}(gen)"  ,  5,  -3.3, 3.3, 100, 0.4, 1.6);
  jetInEvents_=0;
}

AnalysisTasksAnalyzerJEC::~AnalysisTasksAnalyzerJEC ( ) [virtual]

default destructor

deconstructor

A Response function is nicer in a TProfile:

Definition at line 20 of file AnalysisTasksAnalyzerJEC.cc.

References mergeVDriftHistosByStation::file, hists_, and jecLevel_.

{

 TFile* file=new TFile("myResponse"+TString(jecLevel_)+".root", "RECREATE");
 TProfile* prof = hists_["Response"  ]->ProfileX();
 prof->Write();
 file->Write();
 file->Close();
}

Member Function Documentation

void AnalysisTasksAnalyzerJEC::analyze ( const edm::EventBase & event ) [virtual]

everything that needs to be done during the event loop

Implements edm::BasicAnalyzer.

Definition at line 32 of file AnalysisTasksAnalyzerJEC.cc.

References gather_cfg::cout, help_, hists_, jecLevel_, jetInEvents_, METSkim_cff::Jets, Jets_, gen::k, and patJetCorrFactors_.

{
  // define what Jet you are using; this is necessary as FWLite is not 
  // capable of reading edm::Views
  using pat::Jet;

  // Handle to the Jet collection
  edm::Handle<std::vector<Jet> > Jets;
  event.getByLabel(Jets_, Jets);

  // loop Jet collection and fill histograms
  for(std::vector<Jet>::const_iterator jet_it=Jets->begin(); jet_it!=Jets->end(); ++jet_it){  


  if(help_==true){
     if(jetInEvents_==0){
       std::cout<<"\n \n number of available JEC sets: "<< jet_it->availableJECSets().size() << std::endl; 
       for(unsigned int k=0; k< jet_it->availableJECSets().size(); ++k){
         std::cout<<"\n \n available JEC Set: "<< jet_it->availableJECSets()[k] << std::endl; 
       }
       std::cout<<"\n \n*** You found out which JEC Sets exist! Now correct it in your config file."<<std::endl;
       std::cout<<"\n \n number of available JEC levels "<< jet_it->availableJECLevels().size() << std::endl; 
       for(unsigned int k=0; k< jet_it->availableJECLevels().size(); ++k){
         std::cout<<"\n \n available JEC: "<< jet_it->availableJECLevels(patJetCorrFactors_)[k] << std::endl; 
       }
       std::cout<<"\n \n**** You did it correctly congratulations!!!!  And you found out which JEC levels are saved within the jets. Correct this in your configuration file." <<std::endl;     
     }
  }

     if(jet_it->genParticlesSize()>0){
         hists_["Response" ]->Fill( jet_it->correctedJet(jecLevel_).eta(), jet_it->correctedJet(jecLevel_).pt()/ jet_it->genParticle(0)->pt());
         std::cout<<"\n \n**** You did it correctly congratulations!!!! "<< std::endl;
     }
     jetInEvents_+=1;
  }
}