Hi Paul,
Do:
h->Draw("l hist")
Rene Brun
On Fri, 29 Nov 2002, Paul Balm wrote:
> Hello,
>
> The draw-option "L" doesn't seem to work if Sumw2() on the histogram is
> set. This is what happens:
>
> [root] TH1F* h = afile->Get("a_histo");
> [root] h->Draw("L")
>
> (looks right, line is drawn)
>
> [root] h->Sumw2()
> [root] h->Draw("L")
>
> (line is *not* drawn)
>
> Am I doing something wrong, or is there maybe a way around this?
> I would like to draw the histogram with the options "E3" and "L", and I
> create it with TH1F::Divide, so I really need to set Sumw2. I guess I
> could copy the final histogram to a new histogram by setting the bin
> content and errors manually bin by bin, then draw the new histogram.
> I'm using root 3.03/09 on Linux RH6.
> Regards,
>
> Paul Balm
>
>
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