Re: Fitting data to a curve

*To*: mathgroup at smc.vnet.net*Subject*: [mg73314] Re: Fitting data to a curve*From*: Bill Rowe <readnewsciv at sbcglobal.net>*Date*: Sun, 11 Feb 2007 01:17:11 -0500 (EST)

On 2/9/07 at 2:17 AM, benjamin.friedrich at gmail.com (ben) wrote: >fit = FindFit[data, >a x^2 + b y^2 + c x y + d x + e y + f, {a, b, c, d, e, f}, {x, y}] >Please note >Fit[] = linear fit = easy&stable = no initial guess required >FindFit[] = nonlinear fit = subtle issue = initial guess helps a lot =46indFit does both linear and nonlinear fits. For the linear case there is no need to provide an initial guess when using FindFit. =46indFit will always return the same result as Fit for the linear case. Hence, there is no real reason to use Fit any longer. >Always check your fitting results graphically. This is particularly good advice for nonlinear problems when it is possible to do so. -- To reply via email subtract one hundred and four