Normalising a histogram directly

[Akash116]

Hi
I’ve been searching for a ways to normalize a histogram, however none of them are direct to normalize the data. However there exists a function DrawNormalized which plots normalized data. Shouldn’t we be able to extract normalized data from here directly? If yes, how can I do it?___
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ROOT Version: 6.18
Platform: Windows
Compiler: Not Provided

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[Wile_E_Coyote]

Different ways of normalizing histograms

Hi everyone, I’m a new user of both ROOT and RootTalk so please pardon my ignorance. I’ve been trying to normalize several histograms, and when I search in RootTalk, a multitude of ways comes up. How do I know which one is “right”? What is the difference between the following methods? Here are the 4 methods I tried: Method 1: Double_t num = h->GetBinContent(i); Double_t den = h->GetBinWidth(i); Double_t value = 0; if (den!=0) { value = num/den; h->SetBinContent(i,value); } Met…