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Re: Error detected while calling MPFIT_FDJAC2 [message #71503 is a reply to message #71489]

Tue, 22 June 2010 02:40

Fermiona Fermiona
Messages: 17
Registered: June 2010

Junior Member

Hello Dr. Craige,

I didn't compute the derivatives. The user function returnes the
residual:

FUNCTION LinearFit, p, X=x, Y=y, ERR=err, $
perror=perror, bestnorm=bestnorm, dof=dof

model = p[0]+p[1]*x
resid = (y-model)/err

return, resid
END

and inside the procedure, I had:

p0 = [51.0,-0.5]
args = {X:x_n, Y:y_n, ERR:yerr}
fit_res = mpfit('LinearFit', p0, functargs=args,perror=perror,
bestnorm=bestnorm, dof=dof)

The first time I called mpfit outside of the loop, there was no
error.
When mpfit was called again, from inside the loop this time, I got the
error I mentioned.

Many thanks!

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[Message index]

		Re: Error detected while calling MPFIT_FDJAC2 By: Craig Markwardt on Wed, 23 June 2010 17:16
		Re: Error detected while calling MPFIT_FDJAC2 By: Fermiona Fermiona on Wed, 23 June 2010 01:39
		Re: Error detected while calling MPFIT_FDJAC2 By: Fermiona Fermiona on Tue, 22 June 2010 23:35
		Re: Error detected while calling MPFIT_FDJAC2 By: Craig Markwardt on Tue, 22 June 2010 21:47
		Re: Error detected while calling MPFIT_FDJAC2 By: Fermiona Fermiona on Tue, 22 June 2010 02:40
		Re: Error detected while calling MPFIT_FDJAC2 By: Craig Markwardt on Tue, 22 June 2010 00:48
		Re: Error detected while calling MPFIT_FDJAC2 By: pete.petrus on Thu, 01 May 2014 07:28
		Re: Error detected while calling MPFIT_FDJAC2 By: Craig Markwardt on Thu, 01 May 2014 10:34

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