Hi Volodja, You should do: TF1 fun1("fun1","[0] + [1]*x",1,10); fun1.SetParameters(1,1); fun1.DrawCopy(); fun1.SetParameters(5,-1); fun1.Draw("same"); Rene Brun babintsev@mx.ihep.su wrote: > > Hello rooters. > > I cannot draw 2 lines on the same picture. Root 2.25/03 . > > TF1 fun1("fun1","[0] + [1]*x",1,10); > fun1.SetParameters(1,1); > fun1.Draw(); > fun1.SetParameters(5,-1); > fun1.Draw("same"); // --> different picture > > // fun1.Draw("lsame"); // .......... > // fun1.DrawCopy("lsame"); // ....... > > Thanks a lot. > Volodja Babintsev
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