[Rivet] numerical difference between data and mc aida

[sunil bansal]

Dear Andy and Hendrik,

 Thanks for your feedback!
You can find in attachment example .aida files.

We would also try to work on the suggestions by Hendrik to readjust the bins

Regards-Sunil



On Wed, Apr 3, 2013 at 12:11 PM, Hendrik Hoeth <hendrik.hoeth at cern.ch>wrote:

> Hi Albert,
>
> Thus spake Albert Knutsson (albert.knutsson at cern.ch):
>
> > we have a numerical problem with an aida file.
> >
> > The data aida file have points looking like this:
> > [...]
> >
> > Do you have a solution to this?
>
> We've had that kind of problem before, with a binning in fractions of
> pi. The easiest and most robust way of fixing such problems is to reduce
> the number of digits in the binning and thus use "round" numbers for the
> bin edges. In your case that could for example be
>
> 3.33333e-02   6.66667e-02   1.186100e+00  1.535834e-01
> 6.66667e-02   1.00000e-01   1.763658e+00  2.291718e-01
>
> for the two data bins you quoted. This is well within any uncertainty
> but saves you from rounding issues.
>
> Cheers,
>
>     Hendrik
>
> --
> If your dreams don't scare you, then you are not dreaming big enough.
>



-- 
Sunil Bansal

University of Antwerp
Department of Physics
Laboratory of Particle Physics
239, Groenenborgerlaan 171
BE-2020 Antwerpen
Belgium

email: Sunil.Bansal at ua.ac.be
Mobile:0032489651619
Phone: 003232653543
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