Dear friends,
I have several 1-D histos of which I want to determine the
integral of the bin contents above some x-value and the error
on the integral value.
Currently I do this in my private C++ code by looping over the
bins and calculating everything myself, however I saw the
TH1F::Integral in the docs and wonder if there is something
available to obtain the above.
What would be convenient to my opinion is something like
TH1F* h // The 1-D histo which is then filled with data
float lower,upper; // The lower- and upper bounds for the integral
float val,err; // Value and error of the integral
val=h->Integral(lower,upper,err)
Is something like this available already ?
Note that I prefer the integral to be specified between the real
boundaries instead if the bin numbers. To my opinion this makes
complicated operations more clear in the code.
--
Cheers,
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*----------------------------------------------------------------------*
Dr. Nick van Eijndhoven Department of Subatomic Physics
email : nick@phys.uu.nl Utrecht University / NIKHEF
tel. +31-30-2532331 (direct) P.O. Box 80.000
tel. +31-30-2531492 (secr.) NL-3508 TA Utrecht
fax. +31-30-2518689 The Netherlands
WWW : http://www.phys.uu.nl/~nick Office : Ornstein lab. 172
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tel. +41-22-7679751 (direct) CERN PPE Division / ALICE exp.
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