[Rivet] Different binning of reference data and Rivet output

[Holger Schulz]

Andy Buckley wrote:
> Holger Schulz wrote:
>> Hi,
>>
>> I just noted that running Rivet with the UA5_1989 analysis
>> the binning of the resulting histos differs from those of the
>> reference histos in most of the cases (9 out of 12 observables).
>> The binning difference shows up in the AIDA files already.
>>
>> The only obvious differences I could find are the encoding (UTF-8
>> for Rivet output and ISO-8859-1 for the ref data) and different
>> aida versions as well as different implementations.
>>
>> Also the values are stored as "floats" in the case of the Rivet output,
>> while the ref data is stored as exponentials.
>>
>> I guess none of the above should really be a problem, so I am a bit
>> puzzled at the moment. Do you have any idea where to look for
>> root of this problem?
>
> Are there any gaps in the binning? Rivet determines bins by removing 
> duplicates from the list of bin edges taken from the ref AIDA files, 
> and LWH/AIDA force the bins to be consecutive, i.e. the upper edge of 
> bin n must be the lower edge of bin n+1. If you want to debug how the 
> ref file is translated into LWH bin edges, I find that putting cout 
> statements in the appropriate bits of src/Tools/RivetAIDA.cc and 
> src/Analysis.cc works best. Good luck!
>
> Andy
Yeah, um, I sort of forgot to run gap_removal. Well it's very hot
in our offices. :)

Holger