TLatex* drawEtaLabel(TString minEta, TString maxEta, float x=0.17, float y=0.35, float font_size=0.) { TString label(minEta + " < |#eta| < " + maxEta); TLatex * tex = new TLatex(x, y,label); if (font_size > 0.) tex->SetFontSize(font_size); tex->SetTextSize(0.05); tex->SetNDC(); tex->Draw(); return tex; }