Hi, It seems to be impossible to override the automatic axis scaling in TGraph when you draw it with the "a" option. I found this in the digest: From: Rene Brun (Rene.Brun@cern.ch) Date: Wed Mar 20 2002 - 10:33:17 MET a.. Next message: Rene Brun: "Re: [ROOT] TGaxis" b.. Previous message: Rene Brun: "Re: [ROOT] TGeant3, TGeant4 from AliSoft" c.. In reply to: Steffen Grohmann: "[ROOT] SetRangeUser Problem on Y-axis" d.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ------------------------------------------------------------------------ -------- Hi Steffen, When you use the option "a" in TAxis::Draw, the axis limits are automatically recomputed from the range of the actual Y values. You can force a max/min of the y axis via TAxis::SetMaximum/SetMinimum. An alternative solution is to use TPad::DrawFrame. Rene Brun but TAxis doesn't have SetMaximum or minimum does it? I do this: gAdcPhNear[l]->Draw("AP"); gAdcPhNear[l]->SetMinimum(0); but it still gets drawn with the minimum above zero. Why doesn't this work? Can it be made to work? Has anyone found a solution to this problem? I could always draw a histogram first with the appropriate scale, but that's ugly! Thanks, Jeff. p.s. using latest root on redhat 7.3.1
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