ExtractBinning.h

Go to the documentation of this file.

#include <algorithm>
#include <cstdlib>
#include <functional>
#include <vector>
 
#include "Core/CommonTools/interface/toolbox.h"
 
#include <TAxis.h>
#include <TH3.h>
#include <TString.h>
 
using namespace std;
 
namespace DAS::Normalisation {
 
vector<double> extractBinning(const unique_ptr<TH1> &h3D, const TString &axis)
{
    const TAxis *naxis = nullptr;
    if      (axis == "X") naxis = h3D->GetXaxis();
    else if (axis == "Y") naxis = h3D->GetYaxis();
    else if (axis == "Z") naxis = h3D->GetZaxis();
 
    int ndiv = naxis->GetNbins();
    vector<double> binning(ndiv+1);
    naxis->GetLowEdge(&binning[0]);
    binning[ndiv] = naxis->GetBinUpEdge(ndiv);
 
    return binning;
}
} // end of DAS::Normalisation namespace