#include <SysShiftMETcorrInputProducer.h>

Inheritance diagram for SysShiftMETcorrInputProducer:

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

	~SysShiftMETcorrInputProducer ()

Public Member Functions inherited from edm::EDProducer
	EDProducer ()

virtual	~EDProducer ()

Public Member Functions inherited from edm::ProducerBase
	ProducerBase ()

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

boost::function< void(const BranchDescription &)>	registrationCallback () const
	used by the fwk to register list of products More...

virtual	~ProducerBase ()

Private Member Functions
void	produce (edm::Event &, const edm::EventSetup &)

Private Attributes
TFormula *	corrPx_

TFormula *	corrPy_

std::string	moduleLabel_

edm::InputTag	src_

edm::InputTag	srcVertices_

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

typedef WorkerT< EDProducer >	WorkerType

Public Types inherited from edm::ProducerBase
typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

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

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Protected Member Functions inherited from edm::EDProducer
CurrentProcessingContext const *	currentContext () const

Protected Member Functions inherited from edm::ProducerBase
template<class TProducer , class TMethod >
void	callWhenNewProductsRegistered (TProducer *iProd, TMethod iMethod)

Detailed Description

Compute MET correction to compensate systematic shift of MET in x/y-direction (cf. https://indico.cern.ch/getFile.py/access?contribId=1&resId=0&materialId=slides&confId=174318 )

Authors: Christian Veelken, LLR

Version

Revision:: 1.2

Id:: SysShiftMETcorrInputProducer.h,v 1.2 2012/04/09 14:19:01 veelken Exp

Definition at line 27 of file SysShiftMETcorrInputProducer.h.

Constructor & Destructor Documentation

SysShiftMETcorrInputProducer::SysShiftMETcorrInputProducer ( const edm::ParameterSet & cfg )

explicit

Definition at line 13 of file SysShiftMETcorrInputProducer.cc.

References cms::Exception::append(), corrPx_, corrPy_, data, edm::ParameterSet::getParameter(), edm::InputTag::label(), moduleLabel_, src_, and srcVertices_.

   : moduleLabel_(cfg.getParameter<std::string>("@module_label")),
     corrPx_(0),
     corrPy_(0)
 {
   src_ = cfg.getParameter<edm::InputTag>("src");
   
   edm::ParameterSet cfgCorrParameter = cfg.getParameter<edm::ParameterSet>("parameter");
   TString corrPxFormula = cfgCorrParameter.getParameter<std::string>("px");
   TString corrPyFormula = cfgCorrParameter.getParameter<std::string>("py").data();
   if ( corrPxFormula.Contains("Nvtx") || corrPyFormula.Contains("Nvtx") ) {
     srcVertices_ = cfg.getParameter<edm::InputTag>("srcVertices");
     if ( srcVertices_.label() == "" )
       throw cms::Exception("SysShiftMETcorrInputProducer")
     << "Configuration Parameter 'srcVertices' must be non-empty !!\n";
   }
   
   corrPxFormula.ReplaceAll("sumEt", "x");
   corrPxFormula.ReplaceAll("Nvtx", "y");
   std::string corrPxName = std::string(moduleLabel_).append("_corrPx");
   corrPx_ = new TFormula(corrPxName.data(), corrPxFormula.Data());
 
   corrPyFormula.ReplaceAll("sumEt", "x");
   corrPyFormula.ReplaceAll("Nvtx", "y");
   std::string corrPyName = std::string(moduleLabel_).append("_corrPy");
   corrPy_ = new TFormula(corrPyName.data(), corrPyFormula.Data());
   
   produces<CorrMETData>();
 }

SysShiftMETcorrInputProducer::~SysShiftMETcorrInputProducer ( )

Definition at line 43 of file SysShiftMETcorrInputProducer.cc.

 {
 // nothing to be done yet...
 }

Member Function Documentation

void SysShiftMETcorrInputProducer::produce	(	edm::Event &	evt,
		const edm::EventSetup &	es
	)

privatevirtual

Implements edm::EDProducer.

Definition at line 48 of file SysShiftMETcorrInputProducer.cc.

References corrPx_, corrPy_, edm::Event::getByLabel(), edm::InputTag::label(), CaloMET_cfi::met, edm::Event::put(), src_, and srcVertices_.

 {
   //std::cout << "<SysShiftMETcorrInputProducer::produce>:" << std::endl;
 
   typedef edm::View<reco::MET> METView;
   edm::Handle<METView> met;
   evt.getByLabel(src_, met);
   if ( met->size() != 1 ) 
     throw cms::Exception("SysShiftMETcorrInputProducer::produce") 
       << "Failed to find unique MET object !!\n";
 
   double sumEt = met->front().sumEt();
   //std::cout << " sumEt = " << sumEt << std::endl;
 
   size_t Nvtx = 0;
   if ( srcVertices_.label() != "" ) {
     edm::Handle<reco::VertexCollection> vertices;
     evt.getByLabel(srcVertices_, vertices);
     Nvtx = vertices->size();
   }
   //std::cout << " Nvtx = " << Nvtx << std::endl;
 
   std::auto_ptr<CorrMETData> metCorr(new CorrMETData());
   metCorr->mex = -corrPx_->Eval(sumEt, Nvtx);
   metCorr->mey = -corrPy_->Eval(sumEt, Nvtx);
   //std::cout << "--> metCorr: Px = " << metCorr->mex << ", Py = " << metCorr->mey << std::endl;
   
   evt.put(metCorr);
 }