Re: histo stat when saved from a TTree

From: Rene Brun <brun_at_pcroot.cern.ch>
Date: Wed, 25 May 2005 10:42:31 +0200 (MEST)


Jean-Eric

The answer to your question depends on the values of "smunu". if smunu==0 the entry is not histogrammed.

For the mean value, the result depend on teh number of under/overflows

Rene

On
Wed, 25
May 2005, Jean-Eric Campagne wrote:

> Dear developpers,
>
> If I am creating a TH1F histo (here h2) from the following TTree Read/Draw
> sequence:
>
>
> T2.ReadFile("fluxPosCazes_Globes.dat","sene/F:snue:snumu:snutau:sanue:sanumu:sanutau");
> T2.Draw("sene>>h2(501,0.0,10.04)","snumu");
>
> (nb: T2 has 501 entries as I have checked from T2.Print())
>
> What is the content of #entries of h2 and the result of the mean/sigma value?
>
> Cheers
> Jean-Eric
>
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Received on Wed May 25 2005 - 10:42:35 MEST

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