Hi,
I am trying to draw a TGraph and then fit it to a pol2.
I get a segmentation violation when I try and run this code:
{
const Int_t n=5;
Double_t x[n]={1.0, 2.0, 3.0, 4.0, 5.0}, y[n]={8.8,7.7,7.0,8.1,9.1};
TGraph *chi=new TGraph(n,x,y);
chi->Draw("*A");
Axis_t xmin=x[0];
Axis_t xmax=x[5];
chi->Fit("pol2","","",xmin,xmax);
//chi->Fit("pol2");
}
I notice that if I fit with the line that is commented out on version
3.02/07 it works fine so I assume it is to do with the changes made to Fit
in the new root version.
Please also note that if I run this code without the chi->Draw("*A"); line
it compiles but gives a very bad fit.
Thanks for your help,
Emily Nurse.
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