How to use a histogram pdf in Roofit

[chanchal]

Hii @jonas,

Sorry, I am talking about this below post:

No matching function for call to ‘RooProdPdf::

Dear Experts, I am trying to do a 2D fit, Here’s the complete folder that I am using. 2dfit_forum.tar.gz (1.1 MB) The problem is that, the fit converges when I use the RooExponential fit the “COMBINATORIAL” part, then the code runs fine but when when I try to use a first order polynomial using RooPolyVar, I get the error message: /kk_2dfit.C:156:66: error: no matching function for call to ‘RooProdPdf::RooProdPdf(const char [9], const char [9], RooPolyVar&, myRooPolBG&)’ RooProdPdf comb_bkg(…

Regards
Chanchal