your question is answered here:
http://root.cern.ch/root/roottalk/roottalk99/0566.html
Cheers, Fons.
Woon-Seng Choong wrote:
>
> Hi,
> I encountered a peculiar problem when using TTree::Draw. I have a tree
> which has a variable, say var, which range from 2172 to 2179. There are
> about 10 million events. I used the following command to plot the var:
>
> root [1] tree->Draw("var")
>
> What I got was a plot which range from 2171 to 2173 and has an overflow
> over 8 million events. Why didn't it draw the whole range?
> I am using ROOT v2.21/08.
>
> Seng
-- Org: CERN, European Laboratory for Particle Physics. Mail: 1211 Geneve 23, Switzerland E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248 WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7677910