[ROOT] number of entries when two histos are subtracted ?

From: Ahmet Sedat Ayan (ayan@cms.physics.uiowa.edu)
Date: Mon Jul 23 2001 - 03:23:16 MEST

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Hi Rooters,

I noticed that when I subtract two histograms as in the following 

TH1F *hdiff = new TH1F(*h1);
hdiff->Add(h2,h3,1,-1);

the number of entries in the statistics box shows the sum of the number of
the entries of histos h2 and h3. Is this a bug? or?

thankx

ahmet

***************

Ahmet Sedat Ayan		

Physics & Astronomy Dept.
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e-mail     : ayan@cms.physics.uiowa.edu
web        : http://jazz.physics.uiowa.edu/~ayan

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