RooBinningCategory.cxx

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/*****************************************************************************
 * Project: RooFit                                                           *
 * Package: RooFitCore                                                       *
 * @(#)root/roofitcore:$Id$
 * Authors:                                                                  *
 *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
 *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
 *                                                                           *
 * Copyright (c) 2000-2005, Regents of the University of California          *
 *                          and Stanford University. All rights reserved.    *
 *                                                                           *
 * Redistribution and use in source and binary forms,                        *
 * with or without modification, are permitted according to the terms        *
 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
 *****************************************************************************/
 
/**
\file RooBinningCategory.cxx
\class RooBinningCategory
\ingroup Roofitcore
 
Provides a real-to-category mapping defined
by a series of thresholds. It evaluates the value of `inputVar` passed in the
constructor, and converts this into a bin number using a binning defined for
the inputVar. The name of this binning is passed in the constructor.
**/
 
 
#include "RooBinningCategory.h"
 
#include "Riostream.h"
#include "RooStreamParser.h"
 
 
////////////////////////////////////////////////////////////////////////////////
/// Constructor with input function to be mapped and name and index of default
/// output state of unmapped values
 
RooBinningCategory::RooBinningCategory(const char *name, const char *title, RooAbsRealLValue& inputVar,
                  const char* binningName, const char* catTypeName) :
  RooAbsCategory(name, title), _inputVar("inputVar","Input category",this,inputVar), _bname(binningName)
{
  initialize(catTypeName) ;
}
 
 
 
////////////////////////////////////////////////////////////////////////////////
/// Copy constructor
 
RooBinningCategory::RooBinningCategory(const RooBinningCategory& other, const char *name) :
  RooAbsCategory(other,name), _inputVar("inputVar",this,other._inputVar), _bname(other._bname)
{
}
 
////////////////////////////////////////////////////////////////////////////////
/// Iterator over all bins in input variable and define corresponding state labels
 
void RooBinningCategory::initialize(const char* catTypeName)
{
  const int nbins = _inputVar->getBinning(_bname.Length() > 0 ? _bname.Data() : nullptr).numBins();
  for (Int_t i=0 ; i<nbins ; i++) {
    std::string name = catTypeName!=nullptr ? Form("%s%d",catTypeName,i)
            : (_bname.Length()>0 ? Form("%s_%s_bin%d",_inputVar.arg().GetName(),_bname.Data(),i)
            : Form("%s_bin%d",_inputVar.arg().GetName(),i)) ;
    defineState(name,i);
  }
}
 
 
 
 
////////////////////////////////////////////////////////////////////////////////
/// Calculate and return the value of the mapping function
 
RooAbsCategory::value_type RooBinningCategory::evaluate() const
{
  Int_t ibin = _inputVar->getBin(_bname.Length() > 0 ? _bname.Data() : nullptr);
 
  if (!hasIndex(ibin)) {
    std::string name = (_bname.Length()>0) ? Form("%s_%s_bin%d",_inputVar.arg().GetName(),_bname.Data(),ibin)
                                 : Form("%s_bin%d",_inputVar.arg().GetName(),ibin) ;
    const_cast<RooBinningCategory*>(this)->defineState(name,ibin);
  }
 
  return ibin;
}
 
 
 
 
////////////////////////////////////////////////////////////////////////////////
/// Print info about this threshold category to the specified stream. In addition to the info
/// from RooAbsCategory::printStream() we add:
///
///  Standard : input category
///     Shape : default value
///   Verbose : list of thresholds
 
void RooBinningCategory::printMultiline(std::ostream& os, Int_t content, bool verbose, TString indent) const
{
   RooAbsCategory::printMultiline(os,content,verbose,indent);
 
   if (verbose) {
     os << indent << "--- RooBinningCategory ---" << std::endl
   << indent << "  Maps from " ;
     _inputVar.arg().printStream(os,kName|kValue,kSingleLine);
   }
}