Hi Drew, You can access all TMinuit members (they are public) after the fit root > hist.Fit("gaus"); root > gMinuit->fStatus root > gMinuit->fCstatu Rene Brun Drew Alton wrote: > > Hello, > I am doing fits in Root. When I do them interactively I see something > like this: > FCN=1.26222e-15 FROM MINOS STATUS=SUCCESSFUL 3927 CALLS 4804 > TOTAL > EDM=2.52464e-15 STRATEGY= 1 ERROR MATRIX > ACCURATE > EXT PARAMETER PARABOLIC MINOS ERRORS > NO. NAME VALUE ERROR NEGATIVE POSITIVE > 1 p0 2.06813e-01 7.75185e-02 -6.69639e-02 8.88198e-02 > 2 p1 7.93187e-01 7.86323e-02 -8.98656e-02 6.83877e-02 > 3 p2 6.99663e-01 1.64727e-01 -1.58526e-01 1.73633e-01 > 4 p3 3.00337e-01 1.86156e-01 -1.93731e-01 1.85260e-01 > 5 p4 7.35839e-01 1.21140e-01 -1.08260e-01 1.40031e-01 > 6 p5 1.16457e-01 3.56975e-02 -3.99971e-02 3.22014e-02 > 7 p6 6.41985e-01 9.11096e-02 -8.25384e-02 1.01704e-01 > 8 p7 1.50805e-01 3.03124e-02 -3.35608e-02 2.75935e-02 > > The top line says STATUS=SUCCESSFUL, however sometimes I have FAILED > or PROBLEMS. I assume there is some way to get this information but > I cant find any access methods that sound right. > > I am basically defining a histogram and then a fit fuction and then > I do: > histo->Fit("System8","rnem"); > > I figured out how to get the parameters, the errors, the chi2, but > the success/failed flag escapes me. > > Anyone know how to get this information? > -Drew
This archive was generated by hypermail 2b29 : Sun Jan 02 2005 - 05:50:07 MET