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Re: fit function [message #27320 is a reply to message #27318]

Tue, 16 October 2001 11:57

Pavel A. Romashkin
Messages: 531
Registered: November 2000

Senior Member

Reimar Bauer wrote:
>
> Dear all,
>
> I need a fit function which returns y=mx^n.
>
> Is someone able to share some code.

Maybe, the following will do?

FUNCTION junk, p, x=x, y=y
return, y - (p[0]*x^p[1])
END

; Here, X and Y are your vectors to be fitted.

coefs = MPFIT('junk', [1.d, 1.d], functargs={x:x, y:y}, /quiet)

This assumes that, just like everybody else, you have in your path
everything Craig cared to post on his web site :-)
Cheers,
Pavel

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[Message index]

		Re: fit function By: R.Bauer on Wed, 17 October 2001 01:31
		Re: fit function By: Craig Markwardt on Tue, 16 October 2001 14:20
		Re: fit function By: Craig Markwardt on Tue, 16 October 2001 12:36
		Re: fit function By: Pavel A. Romashkin on Tue, 16 October 2001 11:57
		Re: fit function By: Martin Downing on Tue, 16 October 2001 11:19
		Re: fit function By: David Fanning on Tue, 16 October 2001 11:07

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