Histogram fitting ignores the set limits

[djring]

ROOT Version: 6.22/02
Platform: Ubuntu
Compiler: GCC

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Hello,

i started working on pyroot for plotting and fitting histograms.
So below the code:

“”"""""""""""""""""""
import ROOT

hist = ROOT.TH1D(“x”, “”,1000,-10,10)

hist.FillRandom(“gaus”,1000000)

c1 = ROOT.TCanvas()

gaussFit = ROOT.TF1 (" gaussfit “,” gaus " ,-1 ,1)

hist.Fit(gaussFit,“E”)

hist.Draw()
gaussFit.Draw(“same”)
c1.Update()

input()
“”"""""""""""""""""""

Basically, this code fills a histogramm with a gaussian and additionally fit a gaussian curve in the range -1 to 1. The problem is that the fit function ignores the boundaries -1 to 1 and fits over the hole range (see picture). Is it a bug in root 6.22/02 or is my code incorrect.

[Wile_E_Coyote]

Either: hist.Fit(gaussFit, "ER")
or: hist.Fit(gaussFit, "E", "", -1., 1.)