{                                         
  TCanvas *c2 = new TCanvas("c2","Test Axis",1);
  c2->Divide(2,1);
  c2->cd(1);
  TH1F *h1 = new TH1F("h1","test",100,-4,4);
  h1->FillRandom("gaus",20000);             
  h1->GetYaxis()->SetTicks("-");
  h1->GetXaxis()->SetTicks("-");
  h1->Draw();
  c2->cd(2);
  TH1F *h2 = new TH1F("h2","test",100,-4,4);
  h2->FillRandom("gaus",20000);             
  h2->GetYaxis()->SetTicks("+-");
  h2->GetXaxis()->SetTicks("+-");
  h2->Draw();
}