Channel.h

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// @(#)root/roostats:$Id$
// Author: George Lewis, Kyle Cranmer
/*************************************************************************
 * Copyright (C) 1995-2008, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#ifndef HISTFACTORY_CHANNEL_H
#define HISTFACTORY_CHANNEL_H
 
#include <string>
#include <fstream>
#include <iostream>
 
 
#include "RooStats/HistFactory/Data.h"
#include "RooStats/HistFactory/Sample.h"
#include "RooStats/HistFactory/Systematics.h"
 
namespace RooStats{
namespace HistFactory {
 
class Channel  {
 
 
public:
  friend class Measurement;
 
  Channel();
  Channel(const Channel& other);
  Channel(std::string Name, std::string InputFile="");
 
  /// set name of channel
  void SetName( const std::string& Name ) { fName = Name; }
  /// get name of channel
  std::string GetName() { return fName; }
  /// set name of input file containing histograms
  void SetInputFile( const std::string& file ) { fInputFile = file; }
  /// get name of input file
  std::string GetInputFile() { return fInputFile; }
  /// set path for histograms in input file
  void SetHistoPath( const std::string& file ) { fHistoPath = file; }
  /// get path to histograms in input file
  std::string GetHistoPath() { return fHistoPath; }
 
  /// set data object
  void SetData( const RooStats::HistFactory::Data& data ) { fData = data; }
  void SetData( std::string HistoName, std::string InputFile, std::string HistoPath="" );
  void SetData( double Val );
  void SetData( TH1* hData );
  /// get data object
  RooStats::HistFactory::Data& GetData() { return fData; }
 
  /// add additional data object
  void AddAdditionalData( const RooStats::HistFactory::Data& data ) { fAdditionalData.push_back(data); }
  /// retrieve vector of additional data objects
  std::vector<RooStats::HistFactory::Data>& GetAdditionalData() { return fAdditionalData; }
 
  void SetStatErrorConfig( double RelErrorThreshold, Constraint::Type ConstraintType );
  void SetStatErrorConfig( double RelErrorThreshold, std::string ConstraintType );
  /// define treatment of statistical uncertainties
  void SetStatErrorConfig( RooStats::HistFactory::StatErrorConfig Config ) { fStatErrorConfig = Config; }
  /// get information about threshold for statistical uncertainties and constraint term
  HistFactory::StatErrorConfig& GetStatErrorConfig() { return fStatErrorConfig; }
 
  void AddSample( RooStats::HistFactory::Sample sample );
  /// get vector of samples for this channel
  std::vector< RooStats::HistFactory::Sample >& GetSamples() { return fSamples; }
 
  void Print(std::ostream& = std::cout);  
  void PrintXML( std::string Directory, std::string Prefix="" );
 
  void CollectHistograms();
  bool CheckHistograms();
 
protected:
  
  std::string fName;
  std::string fInputFile;
  std::string fHistoPath;
 
  HistFactory::Data fData;
 
  /// One can add additional datasets
  /// These are simply added to the xml under a different name
  std::vector<RooStats::HistFactory::Data> fAdditionalData;
 
  HistFactory::StatErrorConfig fStatErrorConfig;
 
  std::vector< RooStats::HistFactory::Sample > fSamples;
 
  /// Open a file and copy a histogram
  TH1* GetHistogram( std::string InputFile, std::string HistoPath, std::string HistoName );
 
 
};
 
  extern Channel BadChannel;
 
} // namespace HistFactory
} // namespace RooStats
 
#endif