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Re: 3D Curve Fitting [message #62739 is a reply to message #62737]

Thu, 02 October 2008 04:13

Wox
Messages: 184
Registered: August 2006

Senior Member

On 01 Oct 2008 13:07:37 -0400, Craig Markwardt
<craigmnet@REMOVEcow.physics.wisc.edu> wrote:

> Wox <nomail@hotmail.com> writes:
>>
>> Sorry for the confusing, it must be: "If you have 3 DEPENDENT
>> variables, you can't use mpfit or curvefit or whatever"
>
> I don't think your claim is correct. If you have the independent
> variable, X, and *two* measurements per X point, (say Y and Z) then it
> is straightforward to fit both of those points simultaneously. That
> is effectively fitting a 2D function. The method is the same,
> MPFITFUN('MYFUNCT', X, [Y, Z], [ERR_Y, ERR_Z], ...)
> and your function is responsible for computing both functions
> separately and then stacking them together.

Yes, you're right, but what if X would be measured too?

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[Message index]

		Re: 3D Curve Fitting By: Craig Markwardt on Thu, 02 October 2008 09:05
		Re: 3D Curve Fitting By: Craig Markwardt on Thu, 02 October 2008 09:01
		Re: 3D Curve Fitting By: Wox on Thu, 02 October 2008 04:50
		Re: 3D Curve Fitting By: Wox on Thu, 02 October 2008 04:13
		Re: 3D Curve Fitting By: jaz on Thu, 02 October 2008 02:59
		Re: 3D Curve Fitting By: R.G. Stockwell on Wed, 01 October 2008 11:04
		Re: 3D Curve Fitting By: Craig Markwardt on Wed, 01 October 2008 10:07
		Re: 3D Curve Fitting By: Craig Markwardt on Wed, 01 October 2008 09:53
		Re: 3D Curve Fitting By: jameskuyper on Wed, 01 October 2008 06:07
		Re: 3D Curve Fitting By: David Fanning on Wed, 01 October 2008 05:19
		Re: 3D Curve Fitting By: Wox on Wed, 01 October 2008 05:04
		Re: 3D Curve Fitting By: Wox on Wed, 01 October 2008 04:50
		Re: 3D Curve Fitting By: Rob.Dimeo on Wed, 01 October 2008 04:08
		Re: 3D Curve Fitting By: Wox on Wed, 01 October 2008 01:55
		Re: 3D Curve Fitting By: jaz on Wed, 01 October 2008 00:35
		Re: 3D Curve Fitting By: russell.grew on Tue, 30 September 2008 17:15

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