histops.cxx

Go to the documentation of this file.

/// \file
/// \ingroup tutorial_exp
///
/// \macro_code
///
/// \date 2015-08-08
/// \warning This is part of the experimental API, which might change in the future. Feedback is welcome!
/// \author Axel Naumann <axel@cern.ch>
 
/*************************************************************************
 * Copyright (C) 1995-2015, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#include "ROOT/RHist.hxx"
#include <iostream>
 
void histops()
{
 
   using namespace ROOT::Experimental;
   // Create a 2D histogram with an X axis with equidistant bins, and a y axis
   // with irregular binning.
   RH2D hist1({10, 0., 1.}, {{0., 1., 2., 3., 10.}});
 
   // Fill weight 1. at the coordinate 0.01, 1.02.
   hist1.Fill({0.01, 1.02});
 
   RH2D hist2({{{10, 0., 1.}, {{0., 1., 2., 3., 10.}}}});
   // Fill weight 1. at the coordinate 0.02, 1.03 (that's the same bin).
   hist2.Fill({0.02, 1.03});
 
   Add(hist1, hist2);
 
   int binidx = hist1.GetImpl()->GetBinIndex({0.01, 1.02});
   std::cout << hist1.GetImpl()->GetBinContent(binidx) << std::endl;
}