Root help:
I have a large number of (2D) histograms with simple event counts in the bins. When I do Sumw2() to set the errors it appears the empty bins have their error set to zero. This plays havoc with the Chi squared calculation (crash on divide by zero). Is there a way to make Sumw2() set the error on empty bins to 1.0?
Bill Love Using root 4.04.02 on RedHat Linux.Received on Wed Jul 13 2005 - 16:55:36 MEST
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