I asked this question some time before, but didn't get answer. I need
to use user defined function as a weight in TNtuple::Draw(). In PAW it
looks like that:
app comis quit
real function w(z,d,sig)
real z,d,sig,s2
s2=sqrt(2.)*sig
w=0.5*(erf((z+d)/s2)-erf((z-d)/s2))
end
quit
*************
nt/pro [id] [idn] el11 [cond]*w(z1m,10.,5.)
Where el11 and z1m are elements of ntuple.
What is the simplest way to do it in ROOT?
==============================================================
Dmitry A. Shtol (SND group)
Budker Institute of Nuclear Physics
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