just a question - maybe there already exists some simple solution in TTree:
I have discrete dE and E telescope data. dE+E = Etot.
I have different calibrations, so I have to do something like
tree->Draw("dE:dE+Efactor >> histoEtot").
If multiplication factor is not integer, obviously, I get a pattern
in Etot spectrum. Normally, one can make ‘randomization’ of each bin each time
it enters the histogram filling routine (Eprime=factor(gRandom->Uniform(0,1)+E-0.5) ).
But for this, one must create a “Selector” and things are more complex…