#include "ROOT/RDataFrame.hxx"
#include "ROOT/RVec.hxx"
#include "ROOT/RDF/RInterface.hxx"
#include "TCanvas.h"
#include "TH1D.h"
#include "TLatex.h"
#include "TLegend.h"
#include "Math/Vector4D.h"
#include "TStyle.h"

using namespace ROOT::VecOps;
using RNode = ROOT::RDF::RNode;
using rvec_f = const RVec<float> &;
using rvec_i = const RVec<int> &;





void selecthist()
{
   auto C = new TCanvas();
   
   auto file1 = new TFile("hist_xx_true1.root");
   
   TH1F * df_zzz_backg;
   
   file1->GetObject("df_zzz_backg", df_zzz_backg);

    //Other File
   
   auto file2 = new TFile("hist_xx_sig1.root");
   TH1F * df_xx_sig_4mu;
   file2->GetObject("df_xx_sig_4mu", df_xx_sig_4mu);

   
 
   //df_zzz_backg->SetMarkerStyle(kFullCircle);
   //df_xx_sig_4mu->SetMarkerStyle(kFullSquare);
   df_zzz_backg->DrawClone();
   df_xx_sig_4mu->DrawClone("SAME");

   gPad->BuildLegend();
}