Hi Rooters,

While I was working on the binned dataset observed that a histogram created from RooDataHist has total entries always equal to 100. To illustrate this point I have attached the modified code from tutorial rf201_composite.C. Here I make a binned clone of data (see line 72) and convert it to a TH1 histogram using the createHistogram method. I observe that the number of entries shown in the statistics box of TH1 is always equal to 100. I also confirmed it by printing it h1->GetEntries(). In the example, I have generated 1000 data points and filled them into 50 bins. I expect the number of entries of the histogram to be 1000. But it shows that the number of entries is 100. Can someone explain why is this so?

rf201_composite.C (4.3 KB)