[ROOT] Add()ing hists with different number of bins.

From: bv@bnl.gov
Date: Tue Aug 27 2002 - 20:38:17 MEST 

Hi,

I want to Add() up a set of TH2Ds in to a single one, however, the
individual ones were mistakenly booked with a different number of bins
in the X direction.  (This is what you get with a detector that keeps
growing durring data taking....).

The missing bins can just be considered to have zero content.  Is
there some nice way to still add these hists together without looping
over all the individual bins?

Thanks,
-Brett.

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