#!/usr/bin/python
import time
from ROOT import *
f = TFile("chi2_vs_f0.root")
f.cd()
myStyle.cd()
c = TCanvas()
c.cd()
chi2_vs_f0.Draw("AP")

#def f(x,par):
#   return par[0]+par[1]*x[0]+par[2]*x[0]*x[0]+par[3]*x[0]*x[0]*x[0]
#
#ff = TF1('ff',f,0.68,1.48,4)
#chi2_vs_f0.Fit(ff,'EMR','',0.68,1.48)
#c.Update()

ff = TF1('ff','382.74-900.12*x+697.82*x*x-174.92*x*x*x',0.89,1.46)
ff.Draw('same')

try:
   time.sleep(1E9)
except KeyboardInterrupt:
   pass