|Message: Re: Really confused by the output of csv format histogram.||Not Logged In (login)|
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The cvs "bins part" contains the underflow and overflow bins. For a 1D histo, if you booked n bins, you have n+2 bins ; and for a 2D histo, if you booked nx x bins and ny y bins, then you have (nx+2)*(ny+2) bins in the csv file. For a 1D histo, the first bin is the underflow bin, and the last bin is the outflow bin.
About your "in additions", not so clear what you mean, but look around what may be the outflow/outflows for you histograms in your analysis. In particular if, bad booking luck, for a 1D histo all your fill() are "all underflow", then the total number of entries is in the first bin of the csv file !
(I never exclude a problem on our side, especially when dealing with IO and storage, then if you suspect that something is anyway wrong, let us know...)
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