[ROOT] "L" option for 1-dim histograms

From: Paul Balm (r45@nikhef.nl)
Date: Fri Nov 29 2002 - 11:26:24 MET


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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