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Re: 3D Curve Fitting [message #62755 is a reply to message #62754]

Wed, 01 October 2008 04:50

Wox
Messages: 184
Registered: August 2006

Senior Member

On Wed, 1 Oct 2008 04:08:29 -0700 (PDT), Rob.Dimeo@gmail.com wrote:

> On Oct 1, 4:55ï¿½am, Wox <nom...@hotmail.com> wrote:
>> On Wed, 1 Oct 2008 00:35:08 -0700 (PDT), jaz <jazpear...@gmail.com>
>> wrote:
>>
>> If you have 3 independent variables, you can't use mpfit or curvefit
>> or whatever. There was a recent thread about fitting a plane through
>> 3D points:http://groups.google.com/group/comp.lang.idl-pvwave/b rowse_thread/thr...
>
> Using either MPFIT or MPCURVEFIT, I am not aware of any such
> limitation on the number of independent variables with which one can
> fit a user-supplied model to data (other than computational
> resources).

Sorry for the confusing, it must be: "If you have 3 DEPENDENT
variables, you can't use mpfit or curvefit or whatever"

The point is, mpfit (and all curvefitting routines) can handle only 1
dependent variable and any number if independent variables.

The example I was referring to was fitting a plane ax+by+cz+d=0
through measured points in 3D.

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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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