{
  auto c = new TCanvas("c1","Examples of TGaxis",900,100);
  c->Range(-6,-0.1,6,0.1);
  auto *axis = new TGaxis(-5.5,0.,5.5,0.,0.0,100,510,"S");
  axis->SetName("axis1");
  axis->SetTitle("Axis Title");
  axis->SetTitleSize(0.2);
  axis->SetLabelSize(0.2);
  axis->SetTickSize(0.15);
  axis->SetTitleColor(kBlue);
  axis->SetTitleFont(42);
  axis->ChangeLabelByValue(0., -1, -1, -1, kRed);
  axis->ChangeLabelByValue(20., -1, 0);
  axis->ChangeLabelByValue(40., 30.);
  axis->ChangeLabelByValue(50., -1, -1, -1, kBlue, -1, "blue for 50.");
  axis->ChangeLabelByValue(90., -1, -1, -1, kGreen, -1, "green for 90.");
  axis->Draw();
}