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// -*- C++ -*-
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//
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// Package: HistoAnalyzer
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// Class: HistoAnalyzer
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//
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/**\class HistoAnalyzer HistoAnalyzer.cc Prototyping/HistoAnalyzer/src/HistoAnalyzer.cc
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Description: <one line class summary>
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Implementation:
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<Notes on implementation>
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*/
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//
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// Original Author: Benedikt HEGNER
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// Created: Mon May 7 15:31:00 CEST 2007
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// $Id: ExpressionHisto.h,v 1.1.1.4 2008/02/25 15:54:04 auterman Exp $
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//
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//
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// system include files
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#include <memory>
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// user include files
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#include "FWCore/Framework/interface/Event.h"
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#include "FWCore/Framework/interface/MakerMacros.h"
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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// code specific includes
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#include "PhysicsTools/Parser/interface/MethodMap.h"
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#include "Reflex/Type.h"
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#include "FWCore/ServiceRegistry/interface/Service.h"
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#include "PhysicsTools/UtilAlgos/interface/TFileService.h"
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#include "PhysicsTools/Parser/interface/MethodMap.h"
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#include "PhysicsTools/Parser/interface/cutParser.h"
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#include "PhysicsTools/Parser/interface/ExpressionVar.h"
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//#include "Object.h"
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#include "TFile.h"
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#include "TH1F.h"
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#include "TH1.h"
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#include <string>
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#include <sstream>
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#include <ostream>
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#include <fstream>
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#include <iostream>
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#include <iomanip>
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#include <ios>
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//
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// class decleration
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//
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template<typename T>
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class ExpressionHisto {
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private:
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int nbins;
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double min, max;
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std::string name, plotquantity;
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TH1F * hist;
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ROOT::Reflex::Type & type;
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reco::parser::ExpressionVar * expr;
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public:
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ExpressionHisto(const edm::ParameterSet& iConfig);
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~ExpressionHisto();
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void initialize(edm::Service<TFileService>& fs);
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void fill( T element);
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};
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template<typename T>
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ExpressionHisto<T>::ExpressionHisto(const edm::ParameterSet& iConfig)
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{
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min = iConfig.template getUntrackedParameter<double>("min");
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max = iConfig.template getUntrackedParameter<double>("max");
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nbins = iConfig.template getUntrackedParameter<int>("nbins");
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name = iConfig.template getUntrackedParameter<std::string>("name");
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plotquantity = iConfig.template getUntrackedParameter<std::string>("plotquantity");
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reco::MethodMap methods_ = reco::MethodMap::methods<T>();
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reco::MethodMap::const_iterator m = methods_.find(plotquantity);
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type = methods_.type();
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if (m==methods_.end())
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throw cms::Exception("BadConfig") << "ExpressionHisto: Cannot find expression ("
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<< plotquantity << ", " << name << ").";
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expr = new reco::parser::ExpressionVar( m->second );
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}
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template<typename T>
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ExpressionHisto<T>::~ExpressionHisto()
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{
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delete expr;
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}
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template<typename T>
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void ExpressionHisto<T>::initialize(edm::Service<TFileService>& fs)
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{
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hist = fs->template make<TH1F>(name.c_str(),plotquantity.c_str(),nbins,min,max);
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}
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template<typename T>
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void ExpressionHisto<T>::fill(T element)
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{
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hist->Fill(expr->value(ROOT::Reflex::Object(type, &element)));
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}
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