Re: problem with drawing options for asymmetry histogram

Do:

asym->Draw("HIST C");

On Thu, 30 Jun 2005, Thomas Schietinger wrote:

> Dear ROOT friends,
>
> [in ROOT 4.04/02...]
> I am using the GetAsymmetry() method to produce an asymmetry
> between two histrograms. I would like to plot the resulting
> asymmetry as a function (smooth curve). Unfortunately, the
> returned histogram refuses to be drawn with the "C" drawing
> option! Any idea how I can "free" my histogram from these
> drawing restrictions? I am attaching a simple macro to
> illustrate the problem.
>
> Many thanks in advance,
>
> Thomas
>
> TH1F *h1 = new TH1F("h1","first histo",3,0.,3.);
> TH1F *h2 = new TH1F("h2","second histo",3,0.,3.);
>
> Stat_t *s1 = new Stat_t[5];
> s1[0]=0.;s1[1]=1.;s1[2]=2.;s1[3]=3.;s1[4]=0.;
> h1->SetContent(s1);
> h1->Draw("C"); // no problem drawing a smooth curve!
>
> Stat_t *s2 = new Stat_t[5];
> s2[0]=0.;s2[1]=3.;s2[2]=2.;s2[3]=1.;s2[4]=0.;
> h2->SetContent(s2);
> h2->Draw("C"); // no problem drawing a smooth curve!
>
> TH1F *asym = h1->GetAsymmetry(h2);
> asym->Draw("C"); // #$%^@&!! no smooth curve - WHY?
>
>
>

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