BasicMuonAnalyzer Class Reference

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

#include "PhysicsTools/UtilAlgos/interface/BasicMuonAnalyzer.h"

Inheritance diagram for BasicMuonAnalyzer:

Public Member Functions
void	analyze (const edm::EventBase &event)
	everything that needs to be done during the event loop More...
	BasicMuonAnalyzer (const edm::ParameterSet &cfg, TFileDirectory &fs)
	default constructor More...
void	beginJob ()
	everything that needs to be done before the event loop More...
void	endJob ()
	everything that needs to be done after the event loop More...
virtual	~BasicMuonAnalyzer ()
	default destructor More...
Public Member Functions inherited from edm::BasicAnalyzer
	BasicAnalyzer (const edm::ParameterSet &cfg, TFileDirectory &fileService)
	default constructor More...
virtual	~BasicAnalyzer ()
	default destructor More...

Private Attributes
std::map< std::string, TH1 * >	hists_
	histograms More...
edm::InputTag	muons_
	input tag for mouns More...

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 BasicMuonAnalyzer.h.

Constructor & Destructor Documentation

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

default constructor

Definition at line 8 of file BasicMuonAnalyzer.cc.

References hists_, and TFileDirectory::make().

                                                                                  : 
  edm::BasicAnalyzer::BasicAnalyzer(cfg, fs),
  muons_(cfg.getParameter<edm::InputTag>("muons"))
{
  hists_["muonPt"  ] = fs.make<TH1F>("muonPt"  , "pt"  ,  100,  0., 300.);
  hists_["muonEta" ] = fs.make<TH1F>("muonEta" , "eta" ,  100, -3.,   3.);
  hists_["muonPhi" ] = fs.make<TH1F>("muonPhi" , "phi" ,  100, -5.,   5.); 
  hists_["mumuMass"] = fs.make<TH1F>("mumuMass", "mass",   90, 30., 120.);
}

virtual BasicMuonAnalyzer::~BasicMuonAnalyzer ( )

inlinevirtual

default destructor

Definition at line 25 of file BasicMuonAnalyzer.h.

{};

Member Function Documentation

void BasicMuonAnalyzer::analyze ( const edm::EventBase &  event )

virtual

everything that needs to be done during the event loop

Implements edm::BasicAnalyzer.

Definition at line 20 of file BasicMuonAnalyzer.cc.

References hists_, patZpeak::muons, and muons_.

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

  // Handle to the muon collection
  edm::Handle<std::vector<Muon> > muons;
  event.getByLabel(muons_, muons);

  // loop muon collection and fill histograms
  for(std::vector<Muon>::const_iterator mu1=muons->begin(); mu1!=muons->end(); ++mu1){
    hists_["muonPt" ]->Fill( mu1->pt () );
    hists_["muonEta"]->Fill( mu1->eta() );
    hists_["muonPhi"]->Fill( mu1->phi() );
    if( mu1->pt()>20 && fabs(mu1->eta())<2.1 ){
      for(std::vector<Muon>::const_iterator mu2=muons->begin(); mu2!=muons->end(); ++mu2){
    if(mu2>mu1){ // prevent double conting
      if( mu1->charge()*mu2->charge()<0 ){ // check only muon pairs of unequal charge 
        if( mu2->pt()>20 && fabs(mu2->eta())<2.1 ){
          hists_["mumuMass"]->Fill( (mu1->p4()+mu2->p4()).mass() );
        }
      }
    }
      }
    }
  }
}

void BasicMuonAnalyzer::beginJob ( void  )

inlinevirtual

everything that needs to be done before the event loop

Implements edm::BasicAnalyzer.

Definition at line 27 of file BasicMuonAnalyzer.h.

{};

void BasicMuonAnalyzer::endJob ( void  )

inlinevirtual

everything that needs to be done after the event loop

Implements edm::BasicAnalyzer.

Definition at line 29 of file BasicMuonAnalyzer.h.

{};

Member Data Documentation

std::map<std::string, TH1*> BasicMuonAnalyzer::hists_

private

histograms

Definition at line 37 of file BasicMuonAnalyzer.h.

Referenced by analyze(), and BasicMuonAnalyzer().

edm::InputTag BasicMuonAnalyzer::muons_

private

input tag for mouns

Definition at line 35 of file BasicMuonAnalyzer.h.

Referenced by analyze().