void test()
{
  TCanvas* can = new TCanvas;
  TH1D* hist = new TH1D("", "", 40, 0, 0);

  hist->Fill(1, 1);
  hist->GetXaxis()->SetTitle("X");
  hist->GetYaxis()->SetTitle("Y");
  hist->GetXaxis()->CenterTitle();
  hist->GetYaxis()->CenterTitle();
  hist->GetXaxis()->SetTitleSize(0.05);
  hist->GetYaxis()->SetTitleSize(0.05);
  hist->GetXaxis()->SetLabelSize(0.05);
  hist->GetYaxis()->SetLabelSize(0.05);
  hist->Draw();
}