If you have an histogram hist fitted with the function func (below "gaus"),
you can do the following:
hist->Fit("gaus");
TF1 *func = hist->GetFunction("gaus");
func->GetChisquare();
func->GetParameter(i);
func->GetParError(i);
func->GetNDF();
etc... see TF1.h
You can also access the status of the fitter via
TVirtualFitter *fitter = TVirtualFitter(hist);
fitter->PrintResults(3,1.);
fitter->...
Rene Brun
Huaizhang Deng wrote:
>
> Hi:
>
> After I fit a histogram, is there any function or variable which tells
> me the status of the fit?
>
> --
> Huaizhang Deng
> 516-344-5731
> P. O. Box 426
> Upton, NY 11973
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