void tester()
{
  TCanvas *c;
  TGraphErrors *eg;
  TGraph *g;
  float x[3],y[3],dx[3],dy[3];
  int i;
  
  c=new TCanvas();
  c->Divide(2,1);
  for(i=0;i<3;i++){x[i]=i+1;y[i]=i^2+i;dx[i]=dy[i]=0.5;}
  c->cd(1);
  eg=new TGraphErrors(3,x,y,dx,dy);
  eg->Draw("ALP");
  eg->GetXaxis()->SetTitle("time");
  eg->GetYaxis()->SetTitle("aggrivation");
  c->cd(2);
  g=new TGraph(3,x,y);
  g->Draw("ALP");
  g->GetXaxis()->SetTitle("time");
  g->GetYaxis()->SetTitle("aggrivation");

  c->cd();
  c->Modified();
  c->cd();
  c->SaveSource("graph.cxx");

}