Hello everybody,
I have a big and weird problem with TFractionFitter.
I have some mc histograms and a data one. I want to fit them in a small ROI (see the code), and each times, independently with the constraints, the factors go to their low limit.
When I want to see something like data->Draw(); fit->GetPlot()->Draw(“same”), I seems that getplot gives the sum mcs + data, something like that.
I have joined the code and an example of histograms which reproduce the problem. I need help !!
Thank you
testmc.root (8.87 KB)
tffit.C (880 Bytes)