I am fitting a histogram hyds with a gaussian according to :
g = new TF1("g","gaus",gmin, gmax);
hyds->Fit("g","ER0");
g->GetParameters(par);
hyds->Draw() ;
I got the following on my root-command-screen
FCN=66.6685 FROM MINOS STATUS=PROBLEMS 1282 CALLS 1694
TOTAL
EDM=2.55251e-05 STRATEGY= 2 ERROR MATRIX
ACCURATE
EXT PARAMETER PARABOLIC MINOS ERRORS
NO. NAME VALUE ERROR NEGATIVE POSITIVE
1 Constant 1.47776e+02 4.41311e+00 -3.80487e+00 3.80193e+00
2 Mean -2.83708e-04 3.83873e-04 -3.99915e-04 3.99098e-04
3 Sigma 1.52598e-02 2.16818e-06
but on the graphics an information-window is appearing with the
hist- parameters (I do believe) not the fit ones :
hyds
Nent = 1600
Mean = -0.00539024
RMS = 0.14343
is it a bug ?
Faouzi