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*From*: brian whatcott <betwys1@sbcglobal.net>*Date*: Thu, 2 Apr 2020 18:17:07 -0500

The fitting algorithm my curve fitter uses is also Levenberg-Marquardt in combination with Gauss-Newton (ref) so I am likely mistaken

Brian W

ref: ACM TRans math Software 7,3(sep 1981)'An Adaptive Nonlinear Least-squares Algorithm' Dennis J.E et al

On 4/2/2020 3:33 PM, bernard cleyet wrote:

/snip/I think the fit (is a Marquardt) treats each datum equally unless one weights the data.

/snip/

Whether the scale (ordinate) is linear of log, the fit is the same.

bc delayed, soon

**References**:**[Phys-L] Fwd: Re: six more days in Okla***From:*brian whatcott <betwys1@sbcglobal.net>

**Re: [Phys-L] Fwd: Re: six more days in Okla***From:*bernard cleyet <bernard@cleyet.org>

**Re: [Phys-L] Fwd: Re: six more days in Okla***From:*brian whatcott <betwys1@sbcglobal.net>

**Re: [Phys-L] Fwd: Re: six more days in Okla***From:*bernard cleyet <bernard@cleyet.org>

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