Hello Rooters,
I have rescaled a histogram. I used TH1::Scale( Double_t ) method:
h->Scale( norFac );
I received strange errors, e.g.:
x-center dN/dEsec err-dN/dEs
11.22 7.2651e-007 8.5235e-004
14.13 4.6631e-007 6.8287e-004
-----------
When I made the same (I suppose) with:
Float_t cbin =h->GetBinContent( ib );
Float_t error=h->GetBinError( ib );
hO->SetBinContent( ib, (cbin*cScal) );
hOl->SetBinError( ib, (error*cScal) );
I received following results:
x-center dN/dEsec err-dN/dEs
11.22 7.2651e-007 1.5226e-008
14.13 4.6631e-007 1.2199e-008
------------
Why is there such difference in the results?
Janek.
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