{
   //
   // To see the output of this macro, click begin_html <a href="gif/graph.gif">here</a>. end_html
   //
   gROOT->Reset();
   c1 = new TCanvas("c1","A Simple Graph Example",200,10,700,500);

   TH1F *h = new TH1F("h","test",10,0,0);
   const Int_t n = 20;
   Double_t x[n], y[n];
   for (Int_t i=0;i<n;i++) {
     x[i] = i*0.1;
     y[i] = sin(x[i]+0.2)/(x[i]+0.1);
     h->Fill(y[i]);
   }
   gr = new TGraph(n,x,y);
   gr->SetLineWidth(4);
   gr->SetMarkerColor(4);
   gr->SetMarkerStyle(21);
   gr->Draw("ACP");

   //draw histogram in a small pad 
  TPad *pad = new TPad("small","corner pad",.55,.6,.88,.89,33);
  pad->Draw();
  pad->cd();
  h->SetFillColor(46);
  h->Draw();
  c1->cd();
}