Sorry, I forgot to put a topic in the email, and maybe many of you could have deleted it as spam. Here it is again. Cheers, Alberto On Wed, 2004-05-05 at 15:38, Alberto Pulvirenti wrote: > Dear ROOTers, > > I have seen that it is possible to fit a TGraphErrors object with a > given TF1. > > My question is: does this fit take into account the errors which I pass > to this object, or not? > Maybe, must I specify something in order to accomplish this task? > > Another question: I saw in the class definition a method called > > virtual void LeastSquareLinearFit(Int_t n, Double_t& a0, Double_t& a1, > Int_t& ifail, Int_t first, Int_t last) > > Does it fit (according to parameters names) to which of the following? > 1) a0 + a1*x > 2) a0*x + a1 > > What does 'ifail' mean? > > Thanks for all.
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