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Re: Solution of Nonlinear System of Equations (BROYDEN etc.) [message #31908 is a reply to message #31894]

Sun, 25 August 2002 07:00

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

Here I am, replying to my own post. As David can attest, this is a
sure sign of madness.

Craig Markwardt <craigmnet@cow.physics.wisc.edu> writes:
...
> Here is an example using MPFITEXPR, but you could also use MPFIT
> directly. All you need to do is return the vector of non-linear
> function values. Here is an example based on the BROYDEN
> documentation. I have set X and Y to zero because the expression,
> EXPR, computes the residuals directly.
...

I wanted to add that if you define your function BROYFUNC, as it is
defined in the BROYDEN documentation, then you can use MPFIT directly
with no additional changes. The benefit is that you can also use the
nice FUNCTARGS features of MPFIT to pass named values to your function.

Craig

--
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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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[Message index]

		Re: Solution of Nonlinear System of Equations (BROYDEN etc.) By: air_jlin on Mon, 26 August 2002 14:04
		Re: Solution of Nonlinear System of Equations (BROYDEN etc.) By: Craig Markwardt on Sun, 25 August 2002 07:00
		Re: Solution of Nonlinear System of Equations (BROYDEN etc.) By: Craig Markwardt on Sun, 25 August 2002 06:34

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