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Re: Curve Fitting Problem
From: |
Sergei Steshenko |
Subject: |
Re: Curve Fitting Problem |
Date: |
Fri, 27 Jun 2008 01:40:28 -0700 (PDT) |
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--- On Thu, 6/26/08, A. Kalten <address@hidden> wrote:
> From: A. Kalten <address@hidden>
> Subject: Re: Curve Fitting Problem
> To: address@hidden
> Date: Thursday, June 26, 2008, 9:37 PM
> On Thu, 26 Jun 2008 19:52:32 -0700 (PDT)
> Sergei Steshenko <address@hidden> wrote:
>
> >
> > If I understand your problem correctly, is more or
> less like this;
> >
> > 1) there is f(x) to be approximated;
> > 2) the desired approximation is:
> >
> > a * x^2 + b * x + c;
> >
>
> In this case there is no function to be approximated.
> There
> is only data that fits a theoretical model. I was
> inquiring
> about any off-the-shelf algorithms that can fit a function
> to a data set where some of the parameters of the function
> need to be constrained in a certain way.
>
> AK
>
When I said "function to be approximated" I meant tabular function,
so if you have tabular f(x) for a set of given xs, you can as well
approximate
f(x) - a * x ^ 2
for the same set of given xs.
Regards,
Sergei.
Re: Curve Fitting Problem, Peter Cloetens, 2008/06/27
Re: Curve Fitting Problem, Fredrik Lingvall, 2008/06/27