Fitting problem

From: Glasgow <p.hutauruk_at_physics.gla.ac.uk>
Date: Thu, 21 Jan 2010 11:01:14 +0000


Dear All,

I had a problem when I do a fitting. You can see the error message below. Could you or anyone help me to solve the problem?



5x5 matrix is as follows

     | 0 | 1 | 2 | 3 | 4 |


   0 |   0.004898     -0.0332  -1.629e-05    -0.01088    -0.01906 
   1 |    -0.0332      0.2847   7.292e-05       0.124      0.1669 
   2 | -1.629e-05   7.292e-05   2.257e-07   5.117e-05  -2.766e-05 
   3 |   -0.01088       0.124   5.117e-05      0.1021     0.04538 
   4 |   -0.01906      0.1669  -2.766e-05     0.04538      0.1436 

nOrder = 5	Chisquared = 1.28133
p0 = 2.15045
5	1.28133	0.526941	1.18024e-09

5
1.28133
0.526941
1.18024e-09
Warning in <Fit>: Abnormal termination of minimization.
 FCN=1.2813 FROM MIGRAD    STATUS=CALL LIMIT   1792 CALLS        1793
TOTAL
                     EDM=1.41512e-05    STRATEGY= 1  ERROR MATRIX
UNCERTAINTY  24.0 per cent
  EXT PARAMETER                APPROXIMATE        STEP         FIRST   
  NO.   NAME      VALUE            ERROR          SIZE      DERIVATIVE 
   1  p0           2.04980e+00   1.36174e+00   1.41786e-04   8.31491e-02
   2  p1          -8.61968e+00   1.08995e+01  -1.20473e-03  -5.29401e-02
   3  p2           9.41483e+00   1.89758e+01   2.17245e-03  -2.73666e-02
   4  p3          -5.98405e+00   5.45302e+00  -4.53394e-04   1.05655e-01
   5  p4           2.49567e+00   2.91305e+00   2.10207e-04   1.55638e-01
   6  p5           1.11878e-01   1.37352e+00   2.68535e-05  -4.89362e-02
Warning in <TBackCompFitter::GetCovarianceMatrix>: Invalid fit result

Thank for your help.

Regards,
Parada Received on Thu Jan 21 2010 - 12:01:24 CET

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