Hi, I’m fitting a function with TVirtualFitter and I need to include the errors for the points. How do I do it with TVirtualFitter? Where is the manual for that?
This is what I’m using.
TVirtualFitter::SetDefaultFitter(“Minuit”);
TVirtualFitter *fitter = TVirtualFitter::Fitter(0, 3);
fitter->SetFCN(myfcn);
fitter->SetParameter(0, “par1”, 0, 0.1, 0,0);
fitter->SetParameter(1, “par2”, 0, 0.1, 0,0);
fitter->SetParameter(2, “par3”, 0, 0.1, 0,0);
fitter->SetParameter(3, “par4”, 1, 0.1, 0,0);
Double_t arglist[1] = {0};
fitter->ExecuteCommand(“MIGRAD”, arglist, 0);
Cheers, Eric