TH1F::Fit: Abnormal termination of minimization.Hallo,
I hope that someone can help me…I’m trying to fit a peak with the crystal ball function; this pdf fits the datas well, but I get the following error…
Warning in TH1F::Fit: Abnormal termination of minimization.
FCN=32.6432 FROM MIGRAD STATUS=FAILED 642 CALLS 643 TOTAL
EDM=0.159878 STRATEGY= 1 ERR MATRIX APPROXIMATE
EXT PARAMETER APPROXIMATE STEP FIRST
NO. NAME VALUE ERROR SIZE DERIVATIVE
1 alpha 8.62633e-02 2.12700e-02 -0.00000e+00 3.92745e+01
2 n 9.56316e+01 1.22705e+02 0.00000e+00 -3.13003e-01
3 Mean 2.24757e+03 3.85838e+00 -0.00000e+00 -5.80114e+00
4 Sigma 1.06142e+01 2.47732e+00 -0.00000e+00 -7.25097e+00
5 Height 4.38560e+01 2.90884e+00 -0.00000e+00 9.41320e-01
How can I solve this problem?
thanks!