Hi, I am trying to fit histogram using defined fit function. It works well when i am giving histogram name in the function. Now i want to do same thing with different histograms using variable name, i tried but it is not working. I am having a main macro(say test.C) in which i define histogram and filling, and i am having fit macro(say fitf.C) in which i define my fit and doing fitting by calling myfit(); (see attached files) In myfit() if i am giving histogram name(say Dca_phi_1) then Dca_phi_1->Fit("fitf"); wroks fine. Now i want, instead of using particular histogram name(Dca_phi_1), it take a variable histogram(say hitsname), where histname is given in main macro(test.C) Thanks for any help Avdhesh
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