[Rivet] Histogram subtraction question

[Andy Buckley]

On 12/11/10 11:00, David Grellscheid wrote:
> Hi!
> 
> I'd like to fill histograms A and B during analyze(), but would like to
> show three histos in the plots: A, B, and A-B. Is there some magic I can
> do in finalize() to achieve this, or do I need to mess with the aida
> files afterwards?

You want the AIDA HistogramFactory (or maybe DataDpointSetFactory)...
yes, it's horrible and we need a more intuitive replacement!

Andy

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