Hi Mateusz, If you have filled your histogram via TH1::Fill, you only need to call TH1::GetEntries. If you call SetBinContent, call TH1::GetSumOfWeights see also TH1::GetStats Rene Brun Mateusz Ploskon wrote: > > Hi, > Small question, if I may... > How one can quickly check if a histogram is empty ? (not iterating bins) > (+ I know what GetEntries() returns...) > > Thank You + > Best regards, > Mat
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