# value of the first parameter p2 = fit_x.GetParameter(1) p2 = round(p2,4) # error of the first parameter e2 = fit_x.GetParError(1) e2 = round(e2,4) print "Chi2 = " + str(chi2) print "P1 = " + str(p1) print "E1 = " + str(e1) TVirtualFitter.GetFitter().GetConfidenceIntervals(grint) grint.SetLineColor(1) grint.SetFillColorAlpha(16,0.65) grint.GetHistogram().SetTitle(" "); grint.GetHistogram().GetXaxis().SetTitle("Top P_{T} (GeV)") if(THEORY == "PWHGP8" ): grint.GetHistogram().GetYaxis().SetTitle("DATA/Powheg+Pythia8") elif(THEORY == "Kidonakis"): grint.GetHistogram().GetYaxis().SetTitle("DATA/aN^3LO") elif(THEORY == "Mitov"): grint.GetHistogram().GetYaxis().SetTitle("DATA/NNLO") elif(THEORY == "Lipka"): grint.GetHistogram().GetYaxis().SetTitle("DATA/approx. NNLO") elif(THEORY == "Pecjak"):