Hi Sean,
You can find an example in the Root tutorial zdemo.C, see URL:
http://root.cern.ch/root/html/examples/zdemo.C.html
You can use TPad::DrawFrame (as in zdemo.C) or
create a TH1F or TH2F to set the scale/draw axis.
Rene Brun
Sean Kelly wrote:
>
>
> Hi Rooters,
>
> I'm trying to get a semi-log plot to show graphical data that
> varies over 12 orders of magnitue.
>
> eg.
>
> c1->SetLogy();
> gr = new TGraph(145,mtv,ptinv_dndpt);
> gr->Draw("AP");
>
> when I make the plot the graph only shows data > 10^7.
> The vectors mtv and ptinv_dndpt are filled correctly
> with data that ranges in decades from 10^0 to 10^12.
>
> any ideas are appreciated.
>
> Sean
>
> _____________________________________________
>
> Sean Kelly
> Dept. of Physics
> University of California Los Angeles
> office tel. (310)-825-6035
> fax (310)-206-4397
> voice mail (310)-259-3747
> _____________________________________________
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