#!/usr/bin/env python
from ROOT import RooWorkspace

w  = RooWorkspace("w")
w.factory("Gaussian:f2(m[50,150],mean[100,90,110],sigma[10,2,50])")
Data = w['f2'].generate(w['m'],2000)

# r = w['f2'].fitTo(Data, Offset=False, Save=True)
# r.Print()
# r = w['f2'].fitTo(Data, Offset='bin', Save=True)
r = w['f2'].fitTo(Data, Offset='initial', Save=True)
r.Print()