Hi Rooters, I have problem with fitting my data by power law function at this way: Elow=15.0; Ehigh=500.0; f1 = new TF1( "f1", "pow(10,[0]*x+[1])", log10(Elow), log10(Ehigh) ); f1->SetLineColor(4); f1->SetLineWidth(1); hist->Fit("f1","R"); I have received result like on the figure which I attached to my e-mail. The histogram 'hist' was rescaled earlier. What is wrong in my code? Best regards, Janek.
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