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 Steffen Grohmann wrote: > > Hello, > > I am trying to use the SetRangeUser function in a TGraph object. While > the function works fine for the x-axis, it doesn't work at all at the > Y-axis. The scaling of the Y-axis is always reset to some "pre-definded" > range (depending on the data) and cannot be changed. > I have tried to insert a "dummy graph" first and then superimposed my > real graphs without drawing the axis. This works in principle but there > is still some trial and error needed to hit the desired axis range > (because the range is always bigger than the biggest value). > I wonder whether there is a more elegant method the scale the y-axis > independently from the data. > > Regards, Steffen > -- > > +------------------------------------------------------+ > |Steffen Grohmann steffen.grohmann@cern.ch | > +------------------------------------------------------| > |CERN | > |European Organization for Nuclear Research | > |ST Division | > |CH-1211 Geneve 23 phone: +41 22 767-7079| > |Switzerland fax: +41 22 767-8767| > +------------------------------------------------------+
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