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[Rivet] histograms in RivetHannes Jung hannes.jung at cern.chFri Aug 31 12:19:02 BST 2012
Thanks for clarification, Hendrik. Now I realise, that this was already discussed in the forum before. Cheers Hannes On 31.08.2012, at 01:32, Hendrik Hoeth wrote: Hi Hannes, I thought, if I do not call the "normalize" procedure at the end, the histos would not be normalized to bin widths, but it seems they still are. Is this correct ? That's correct. This is why we call it a histogram, not a bar chart, since histograms are invariant under changes of the binning. I know that this concept hasn't reached the ROOT developers yet ... And if yes, is there a easy way to obtain a histo without normalization to bin width ? Either fill the histogram with the bin width as additional weight (e.g. for histograms with variable binning) or scale the histogram in finalize() with the bin width (in case of equal bin sizes). Cheers, Hendrik -- Journalist: "Can you explain 5 sigma as 99.999something percent?" Fabiola G.: "Sure, that's 3*10^-7." (after the CERN Higgs seminar, 4 July 2012) *********************************************************************** Hannes Jung Email: Hannes.Jung at desy.de<mailto:Hannes.Jung at desy.de> mobile :+49 40 8998 93741 http://www.desy.de/~jung Tel: +49 (0) 40 8998 3741 Fax: +49 (0) 40 8998 3093 DESY, CMS 01B/02.213 Notkestr.85, 22603 Hamburg, FRG *********************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.hepforge.org/lists-archive/rivet/attachments/20120831/5e6369d9/attachment.html>
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