[Rivet] Rivet histograms

[Andy Buckley]

Hi Christian,

Thanks for the patches! I think that the reason for the change in 
behaviour is that those script were until recently not using lighthisto 
but a similar-looking set of alternative Python histo classes instead. 
When I adapted them to use lighthisto I wasn't aware that we were losing 
some functionality. I'll merge the patch asap and it should appear in 
1.6.1, whenever that happens.

Cheers,
Andy


On 01/09/11 18:25, Christian Roehr wrote:
> Hi All,
>
>
> I'd like to report a strange behaviour in the histogramming/plotting
> part of Rivet 1.6.0 and also provide a possible fix.
>
>
> Since I like Rivet plots :) , I started to use flat2aida (and friends)
> to plot Herwig++-internal histograms. I.e. Hw++ creates a .dat file
> including labels etc, which can then be processed by flat2aida.
>
> This works well with Rivet 1.5. When I switched to version 1.6.0 now, I
> found two problems:
>
> 1. flat2aida just didn't write the xlabel and ylabel information to the
> aida files.
>
> 2. compare-histos didn't collect the xlabel and ylabel info from the
> aida files (which of course did contain labels).
>
> Two changes in lighthisto.py (attached) fixed both problems for me.
>
>
> For no apparent reason, the lighthisto.py of Rivet 1.5 did not have this
> problem, although the respective sections are the same. You'll certainly
> have a better understanding of this. :)
>
> I've also attached a sample .dat file, which you can use to reproduce
> this.
>
>
> All the best and thanks,
>
> Christian
>
>
>
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-- 
Dr Andy Buckley
SUPA Advanced Research Fellow
Particle Physics Experiment Group, University of Edinburgh

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