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HistoAnalyzer< C > Class Template Reference

Creates histograms defined in config file. More...

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

Inheritance diagram for HistoAnalyzer< C >:

List of all members.

Public Member Functions
	HistoAnalyzer (const edm::ParameterSet &)
	constructor from parameter set
	~HistoAnalyzer ()
	destructor
Protected Member Functions
virtual void	analyze (const edm::Event &, const edm::EventSetup &)
	process an event
Private Attributes
edm::InputTag	src_
	label of the collection to be read in
bool	usingWeights_
	Do we weight events?
std::vector< ExpressionHisto < typename C::value_type > * >	vhistograms
	vector of the histograms
edm::InputTag	weights_
	label of the weight collection (can be null for weights = 1)

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Detailed Description

template<typename C>
class HistoAnalyzer< C >

Creates histograms defined in config file.

Author:

: Benedikt Hegner, DESY

Template parameters:

• C : Concrete candidate collection type

Definition at line 20 of file HistoAnalyzer.h.

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Constructor & Destructor Documentation

template<typename C>

HistoAnalyzer< C >::HistoAnalyzer

(

const edm::ParameterSet &

par

)

[inline]

constructor from parameter set

Definition at line 43 of file HistoAnalyzer.h.

References end, bookConverter::histograms, ExpressionHisto< T >::initialize(), it, and HistoAnalyzer< C >::vhistograms.

                                                            : 
  src_(par.template getParameter<edm::InputTag>("src")),
  usingWeights_(par.exists("weights")),
  weights_(par.template getUntrackedParameter<edm::InputTag>("weights", edm::InputTag("fake")))
{
   edm::Service<TFileService> fs;
   std::vector<edm::ParameterSet> histograms = 
                                   par.template getParameter<std::vector<edm::ParameterSet> >("histograms");
   std::vector<edm::ParameterSet>::const_iterator it = histograms.begin();
   std::vector<edm::ParameterSet>::const_iterator end = histograms.end();

   // create the histograms from the given parameter sets 
   for (; it!=end; ++it)
   {
      ExpressionHisto<typename C::value_type>* hist = new ExpressionHisto<typename C::value_type>(*it);
      hist->initialize(fs);
      vhistograms.push_back(hist);
   }   

}

template<typename C>

HistoAnalyzer< C >::~HistoAnalyzer

(

)

[inline]

destructor

Definition at line 65 of file HistoAnalyzer.h.

References end, it, and HistoAnalyzer< C >::vhistograms.

{
   // delete all histograms and clear the vector of pointers
   typename std::vector<ExpressionHisto<typename C::value_type>* >::iterator it = vhistograms.begin(); 
   typename std::vector<ExpressionHisto<typename C::value_type>* >::iterator end = vhistograms.end();
   for (;it!=end; ++it){
     (*it)->~ExpressionHisto<typename C::value_type>();
   }
   vhistograms.clear(); 
}

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Member Function Documentation

template<typename C>

void HistoAnalyzer< C >::analyze	(	const edm::Event &	iEvent,
		const edm::EventSetup &
	)			[inline, protected, virtual]

process an event

Implements edm::EDAnalyzer.

Reimplemented in ZToMuMuHistogrammer.

Definition at line 77 of file HistoAnalyzer.h.

References coll, end, edm::Event::getByLabel(), i, it, HistoAnalyzer< C >::src_, HistoAnalyzer< C >::usingWeights_, HistoAnalyzer< C >::vhistograms, weight, and HistoAnalyzer< C >::weights_.

Referenced by ZToMuMuHistogrammer::analyze().

{
   edm::Handle<C> coll;
   iEvent.getByLabel( src_, coll);
   double weight = 1.0;
   if (usingWeights_) { 
       edm::Handle<double> weightColl;
       iEvent.getByLabel( weights_, weightColl ); 
       weight = *weightColl;
   }

   typename std::vector<ExpressionHisto<typename C::value_type>* >::iterator it = vhistograms.begin();
   typename std::vector<ExpressionHisto<typename C::value_type>* >::iterator end = vhistograms.end(); 

   for (;it!=end; ++it){
      uint32_t i = 0;
      for( typename C::const_iterator elem=coll->begin(); elem!=coll->end(); ++elem, ++i ) {
         if (!(*it)->fill( *elem, weight, i )) {
            break;
         }
      }
   }
}

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Member Data Documentation

template<typename C>

edm::InputTag HistoAnalyzer< C >::src_ [private]

label of the collection to be read in

Definition at line 33 of file HistoAnalyzer.h.

Referenced by HistoAnalyzer< C >::analyze().

template<typename C>

bool HistoAnalyzer< C >::usingWeights_ [private]

Do we weight events?

Definition at line 35 of file HistoAnalyzer.h.

Referenced by HistoAnalyzer< C >::analyze().

template<typename C>

std::vector<ExpressionHisto<typename C::value_type>* > HistoAnalyzer< C >::vhistograms [private]

vector of the histograms

Definition at line 39 of file HistoAnalyzer.h.

Referenced by HistoAnalyzer< C >::analyze(), HistoAnalyzer< C >::HistoAnalyzer(), and HistoAnalyzer< C >::~HistoAnalyzer().

template<typename C>

edm::InputTag HistoAnalyzer< C >::weights_ [private]

label of the weight collection (can be null for weights = 1)

Definition at line 37 of file HistoAnalyzer.h.

Referenced by HistoAnalyzer< C >::analyze().

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The documentation for this class was generated from the following file:

• PhysicsTools/UtilAlgos/interface/HistoAnalyzer.h

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