Set User range on TGraph not working for x-axis , but OK for y-axis

[Wile_E_Coyote]

Problem in setting the range of the plot

Actually, for “graphs”, it is very easy to use any “arbitrary values” for the x-axis range: graph->GetHistogram()->GetXaxis()->SetLimits(xmin, xmax);

Set first axis number to draw

Try: mg_comp_Stz_Q2->Draw("ALP"); gPad->Modified(); gPad->Update(); mg_comp_Stz_Q2->GetHistogram()->GetXaxis()->SetLimits(0.5, 69.5); // or maybe (1., 70.) gPad->Modified(); gPad->Update();