Try, e.g.
latex.DrawLatexNDC(.2,.5,"K_{S}");
For ticks, you can add
gPad->SetTickx(); // or SetTicky() or SetTicks()
(see TPad).
Try, e.g.
latex.DrawLatexNDC(.2,.5,"K_{S}");
For ticks, you can add
gPad->SetTickx(); // or SetTicky() or SetTicks()
(see TPad).