Hi Rene', I have the 3.02/06 version of root. Now (for my analysis) I am using the TProjectionX method for TH2D histo. In the mail of Nesterov: Date: Tue, 10 Sep 2002 13:07:37 +0200 (CEST) From: Stanislav NESTEROV <Stanislav.Nesterov@cern.ch> To: Rene Brun <Rene.Brun@cern.ch> Cc: roottalk@pcroot.cern.ch Subject: [ROOT] Different TH2 projection errors in ROOT and PAW I have read that ( perhaps ) TH2 projection errors are not calculated exactly, now I would like to Know if in my version is all ok or I need to pass at 3.03/09 version and if in this version is all ok. Looking on the web ( under Classes and Members Reference Guide Development version 3.03) the source of ProjectionX under TH2 class ( version 3.03 ) I don't understand because the errors are calculated in this mode; in my opinion the error calculated by ProjectionX ( Classes and Members Reference Guide (pro version 3.02/07)) are correct. I would like your opinion on this question ? Best regards Francesco.
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