[Rivet] [Rivet-svn] r2095 - in trunk: data/plotinfo?src/Analyses

Andy Buckley andy.buckley at ed.ac.uk
Wed Nov 25 23:03:10 GMT 2009


Hendrik Hoeth wrote:
> Thus spake Frank Siegert (frank.siegert at durham.ac.uk):
> 
>> So count me as a user whose plots are probably going to break, because
>> I would have a line in my make-plots configuration file which sets the
>> correct kfactor for that process.
> 
> What percentage of our user community does that? How many would actually
> know that the need to do that? How many would be considering a plot with
> plain generator cross-section normalisation a bug (and that would be the
> default without the lines in the .plot file), since they usually look at
> the plot in a normalised way?
> 
>> And the users for who it really is going to break, e.g. for tuning,
>> aren't going to be helped with your lines in the .plot file, are they?
> 
> No, unfortunately not. But those guys at Tevatron, RHIC and LHC who want
> to have a look at some tuning and decide which parameter set they're
> going to use for their production. Those people who make and look at
> plots.

Right, which is why the post-processing scripts need to be clearly 
identified as part of the standard process and prominently described in 
the manual, wiki "getting started" examples, and the release email. It's 
only a problem if we don't make the role and importance of this final 
step clear and people want to directly compare LO MC to data... which is 
a not uninteresting exercise.

Please try the norming scripts, and make sure they easily accomplish the 
current behaviour of normalising everything to the ref data. Then we 
"experts" can think about making more use of the flexibility that this 
approach gives.

Andy

-- 
Dr Andy Buckley
SUPA Advanced Research Fellow
Particle Physics Experiment Group, University of Edinburgh


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