//exact the data from "hiso.root" file.
//fill TH2D to get a response matrix.

#include <TFile.h>
#include <TH1D.h>
#include <TH2D.h>

void exp2(){

TFile A ("histo5.root","READ");
TH1D* a = (TH1D*)A.Get("h");

TFile B ("histo10.root","READ");
TH1D* b = (TH1D*)B.Get("h");

TFile file ("Respense.root","UPDATE");
TH2D response("response","Response matrix",100,0,14,100,0,14);

  Double_t  BinContent1;
  for (Int_t i=5; i<=a->GetSize(); i++){
  BinContent1 = a->GetBinContent(i);
  response.SetBinContent(i,36,BinContent1);
  }

  Double_t  BinContent2;
  for (Int_t i=5; i<=b->GetSize(); i++){
  BinContent2 = b->GetBinContent(i);
  response.SetBinContent(i,71,BinContent2);
  }

file.cd();
response.Write();
}