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Re: Piecewise curve fitting in idl [message #61793 is a reply to message #61788]

Thu, 31 July 2008 04:54

d.poreh
Messages: 406
Registered: October 2007

Senior Member

On Jul 31, 1:21 pm, Wox <nom...@hotmail.com> wrote:
> On Thu, 31 Jul 2008 03:30:22 -0700 (PDT), d.po...@gmail.com wrote:
>> Folks
>> How we can do the piecewise curve fitting in idl. Say we have an array
>> that this array has got 2 or 3 trends in data and we want to fit a
>> liner curve for each trends. In MATLAB curve fitting tool, we can
>> easily exclude or include a part of data and then fit a curve. How we
>> can do this in IDL
>> Cheers
>> Dave
>
> Euhm, just do the fitting on the different parts? Or do you mean
> fitting with a piecewise polynomial (i.e. spline: see e.g. IMSL_BSLSQ
> or IMSL_CONLSQ)

just doing the fitting on the difrent part. how we can select this
parts and how we can fit a curve to these parts separatly?
Cheers

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[Message index]

		Re: Piecewise curve fitting in idl By: Wox on Fri, 01 August 2008 01:27
		Re: Piecewise curve fitting in idl By: jameskuyper on Thu, 31 July 2008 07:58
		Re: Piecewise curve fitting in idl By: pgrigis on Thu, 31 July 2008 07:41
		Re: Piecewise curve fitting in idl By: Paul Van Delst[1] on Thu, 31 July 2008 07:31
		Re: Piecewise curve fitting in idl By: David Fanning on Thu, 31 July 2008 07:03
		Re: Piecewise curve fitting in idl By: d.poreh on Thu, 31 July 2008 07:00
		Re: Piecewise curve fitting in idl By: jameskuyper on Thu, 31 July 2008 05:39
		Re: Piecewise curve fitting in idl By: d.poreh on Thu, 31 July 2008 04:54
		Re: Piecewise curve fitting in idl By: Wox on Thu, 31 July 2008 04:21
		Re: Piecewise curve fitting in idl By: Craig Markwardt on Sun, 03 August 2008 21:58

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