Re: Re: Fit or Interpolate

*To*: mathgroup at smc.vnet.net*Subject*: [mg39237] Re: [mg39219] Re: Fit or Interpolate*From*: Ian Brooks <ianbrooks at earthlink.net>*Date*: Wed, 5 Feb 2003 00:11:09 -0500 (EST)*References*: <b1l24l$ib5$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

There is a explanation of the difference between Interpolate, Fit and NonlinearFit, along with a discussion of when to use each in the online Mathematica library. http://library.wolfram.com/examples/curvefit/ Ian >David Seruyange wrote: > > > > Hello all, > > > > Another in a series of potentially simple questions: > > > > What is the difference between using Fit and Interpolation? > > f[x_]=Fit[data, {1,x},x] > > -or- > > f[x_]=Interpolation[data][x] > > > > I do know that Fit can take arguments for the independant variables > > form like: > > f[x_]=Fit[data, {1,x},x] > > f[x_]=Fit[data, {1,x,x^2},x] > > but that's a bit of guesswork if you have a limited set of points, no? > > > > Also, is there a function in Mathematica that allows me to swap > > dependent and independent variables? e.g. x=2.5y --> y=x/2.5 > > > > Thanks much, > > > > David Seruyange > > Student