Re: How I can fit data with a parametric equation?
- To: mathgroup at smc.vnet.net
- Subject: [mg91854] Re: How I can fit data with a parametric equation?
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Wed, 10 Sep 2008 05:09:26 -0400 (EDT)
On 9/9/08 at 7:07 AM, dinodeblasio at gmail.com wrote:
>Hello everybody, I have a list of {x,y} data and from a theoretical
>calculation I know that the data should be fitted by an equation,
>for example:
>y=ax+bx+c; where a, b, c are constant parameters.
>The question is how i can find the best fit for my data finding the
>value of this parameters.
>Do mathematica has a specific function for that?
Yes, FindFit. Assume data is a list of {x,y} pairs. Then
FindFit[data, a x + b, {a,b}, x]
will find values for a and b that represent the best fit (least
squares) line. FindFit supports non-linear models as well