/// \file
/// \ingroup tutorial_graphs
/// \notebook
/// Create and Draw a TMultiGraph.
///
/// \macro_image
/// \macro_code
///
/// \author Rene Brun


void multigraph()
{
   gStyle->SetOptFit();
   auto c1 = new TCanvas("c1","multigraph",700,500);
   c1->SetGrid();
   TMultiGraph *mg = new TMultiGraph();

   const Int_t n = 11;
   TGraph *g[2];
   Double_t x[] = {0,1997,3219,3901,3297,2800,2233,1656,1121,802,762};
   Double_t x1[] = {9700,8426,7435,6009,3799,3047,2348,1698,1134,805,765};
   Double_t y[] = {3,3.5,4,5,8,10,13,18,28,38,40};

   int i=0;
   g[i] = new TGraph(n, x, y);
 g[i]->SetLineColor(2);
 g[i]->SetLineWidth(4);
 g[i]->SetMarkerColor(4);
 g[i]->SetMarkerStyle(20);
   mg->Add(g[i]);
   i++;

   g[i] = new TGraph(n, x1, y);
  g[i]->SetLineColor(3);
  g[i]->SetLineWidth(5);
  g[i]->SetMarkerColor(5);
  g[i]->SetMarkerStyle(21);
   mg->Add(g[i]);
  
 
   mg->SetTitle("; m^{2}_{12};tan#beta");
  mg->GetXaxis()->CenterTitle(true);
  mg->GetYaxis()->CenterTitle(true);
// mg->Draw("apl");
   mg->Draw("ACP");



  //force drawing of canvas to generate the fit TPaveStats
   c1->Update();
   c1->GetFrame()->SetBorderSize(12);
   c1->Modified();
   
  // c1->RedrawAxis("G");
}