Hi, Replace c1.SetLogy(); by gPad->SetLogy(); In your case, you are setting the canvas in log scale, but not its subpad. In a canvas, you have have subpads in lin scales, others in log scale. Rene Brun On Tue, 26 Nov 2002, Vu Anh Tuan wrote: > Hi Rene, > > Well I can try interactively as you said. I click on TCanvas::SetLogy > option, it works. But in a macro with TCanvas I'm not really successful. > > Here is a simple code. May you show modify it? :) > > TCanvas c1; > > c1.Divide(2,1); > > c1.cd(1) > c1.SetLogy(); > h1->Draw(); > > //likewise for c1.cd(2) > > Thanks a lot, > > Tuan >
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