fitting problem

From: Roger Mason <rmason_at_esd.mun.ca>
Date: Fri, 09 Feb 2007 11:52:38 -0330


Hello rooters,

I'm trying to fit a TGraph of 2775 points generated by combination of 4 gaussians + noise. The fit does not converge: 

root [1]  **********
 **    5 **MIGRAD        5000    0.002775
 **********

 CALL LIMIT EXCEEDED IN MIGRAD.
 MIGRAD TERMINATED WITHOUT CONVERGENCE. 
 FCN=1328.43 FROM MIGRAD    STATUS=CALL LIMIT  11189 CALLS       11190 TOTAL
                     EDM= unknown      STRATEGY= 1      NO ERROR MATRIX

A fit to a similar spectrum with only 3 gaussians converges OK.

What do I need to tweak to get this to work?

Thanks,
Roger Received on Fri Feb 09 2007 - 16:25:20 CET

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