KVFTrackUpdate Class Reference

#include <KVFTrackUpdate.h>

Inheritance diagram for KVFTrackUpdate:

Public Member Functions
virtual void	analyze (const edm::Event &, const edm::EventSetup &)
virtual void	beginJob ()
virtual void	endJob ()
	KVFTrackUpdate (const edm::ParameterSet &)
	~KVFTrackUpdate ()
Public Member Functions inherited from edm::EDAnalyzer
	EDAnalyzer ()
std::string	workerType () const
virtual	~EDAnalyzer ()

Private Attributes
edm::InputTag	beamSpotLabel
edm::InputTag	trackLabel_

Additional Inherited Members
Public Types inherited from edm::EDAnalyzer
typedef EDAnalyzer	ModuleType
typedef WorkerT< EDAnalyzer >	WorkerType
Static Public Member Functions inherited from edm::EDAnalyzer
static const std::string &	baseType ()
static void	fillDescriptions (ConfigurationDescriptions &descriptions)
Protected Member Functions inherited from edm::EDAnalyzer
CurrentProcessingContext const *	currentContext () const

Detailed Description

This is a very simple test analyzer to test the update of a track with a vertex constraint with the Kalman filter.

Definition at line 19 of file KVFTrackUpdate.h.

Constructor & Destructor Documentation

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

explicit

Definition at line 27 of file KVFTrackUpdate.cc.

References edm::ParameterSet::getParameter().

{
  trackLabel_ = iConfig.getParameter<edm::InputTag>("TrackLabel");
  beamSpotLabel = iConfig.getParameter<edm::InputTag>("beamSpotLabel");
}

KVFTrackUpdate::~KVFTrackUpdate

(

)

Definition at line 34 of file KVFTrackUpdate.cc.

                                {
}

Member Function Documentation

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

virtual

Implements edm::EDAnalyzer.

Definition at line 49 of file KVFTrackUpdate.cc.

References a, b, SingleTrackVertexConstraint::constrain(), gather_cfg::cout, cmsCodeRules.cppFunctionSkipper::exception, edm::EventSetup::get(), edm::Event::getByLabel(), i, edm::EventBase::id(), and edm::HandleBase::isValid().

{



  try {
    edm::LogInfo("RecoVertex/KVFTrackUpdate") 
      << "Reconstructing event number: " << iEvent.id() << "\n";
    
    // get RECO tracks from the event
    // `tks` can be used as a ptr to a reco::TrackCollection
    edm::Handle<reco::TrackCollection> tks;
    iEvent.getByLabel(trackLabel_, tks);

    edm::LogInfo("RecoVertex/KVFTrackUpdate") 
      << "Found: " << (*tks).size() << " reconstructed tracks" << "\n";
    std::cout << "got " << (*tks).size() << " tracks " << std::endl;

    // Transform Track to TransientTrack

    //get the builder:
    edm::ESHandle<TransientTrackBuilder> theB;
    iSetup.get<TransientTrackRecord>().get("TransientTrackBuilder",theB);
    //do the conversion:
    std::vector<TransientTrack> t_tks = (*theB).build(tks);

    edm::LogInfo("RecoVertex/KVFTrackUpdate") 
      << "Found: " << t_tks.size() << " reconstructed tracks" << "\n";
    
    GlobalPoint glbPos(0.,0.,0.);

    AlgebraicSymMatrix mat(3,0);
    mat[0][0] = (20.e-04)*(20.e-04);
    mat[1][1] = (20.e-04)*(20.e-04);
    mat[2][2] = (5.3)*(5.3);
    GlobalError glbErrPos(mat);

    reco::BeamSpot vertexBeamSpot;
    edm::Handle<reco::BeamSpot> recoBeamSpotHandle;
    iEvent.getByLabel(beamSpotLabel,recoBeamSpotHandle);


    SingleTrackVertexConstraint stvc;
    for (unsigned int i = 0; i<t_tks.size();i++) {
      SingleTrackVertexConstraint::BTFtuple a = 
        stvc.constrain(t_tks[i], glbPos, glbErrPos);
      std::cout << "Chi2: "<< a.get<2>()<<std::endl;
      if (recoBeamSpotHandle.isValid()){
    SingleTrackVertexConstraint::BTFtuple b =
      stvc.constrain(t_tks[i], *recoBeamSpotHandle);
    std::cout << "Chi2: "<< b.get<2>()<<std::endl;
      }
    }
  }


  catch (std::exception & err) {
    edm::LogInfo("RecoVertex/KVFTrackUpdate") 
      << "Exception during event number: " << iEvent.id() 
      << "\n" << err.what() << "\n";
  }

}

void KVFTrackUpdate::beginJob ( void  )

virtual

Reimplemented from edm::EDAnalyzer.

Definition at line 37 of file KVFTrackUpdate.cc.

                             {
}

void KVFTrackUpdate::endJob ( void  )

virtual

Reimplemented from edm::EDAnalyzer.

Definition at line 41 of file KVFTrackUpdate.cc.

                            {
}

Member Data Documentation

edm::InputTag KVFTrackUpdate::beamSpotLabel

private

Definition at line 31 of file KVFTrackUpdate.h.

edm::InputTag KVFTrackUpdate::trackLabel_

private

Definition at line 31 of file KVFTrackUpdate.h.