Statistics box entries

I have created a histogram

TH1F  *hgamma = new TH1F("Measured Gamma","Measured Gamma",4000,0.5,4000.5);

and filled this histogram using hgamma->AddBinContent method.
statistics box return zero values (Entries, Mean and RMS ==0)??

By using hgamma->SetBinContent method , it returns wrong values??

Any explanation Please!!!


Hi Noor1,
can you try calling hgamma->GetMean() before drawing the histogram and the stat box?
This call should trigger the evaluation of the statistics.


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