| curvefit hang-ups ????? [message #13300] |
Mon, 02 November 1998 00:00  |
Jens Redemann
Messages: 4
Registered: September 1998
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Junior Member |
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Hi everybody,
has anybody ever had the following problem of with the CURVEFIT
procedure?
I am trying to fit a not too complicated analytical function to some
data, but sometimes
the CURVEFIT procedure just stalls on me. Admittedly, that is when the
data does not
look too much like the shape of the analytical function I am trying to
force it to, but I
thought there is an error message for non-convergence.
Also, when I just interrupt the process, iter = 2, which indicates that
the routine
is stuck after the second iteration step, doesn't it?
Well, any input would be much appreciated.
Thanks,
Jens Redemann
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| Re: curvefit hang-ups ????? [message #13401 is a reply to message #13300] |
Wed, 04 November 1998 00:00  |
G. Scott Lett
Messages: 2
Registered: October 1998
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Junior Member |
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Jens,
Which version of IDL are you using? There was a hole in the logic for the
inner (lambda) loop through IDL 5.0. I recall plugging the hole, so it
should have shown up in IDL 5.1 or IDL 5.1.1.
That's not the only possible source of problems. One may be in your code
for the fitting function.
Regards,
Scott Lett
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