Fit or Interpolate
- To: mathgroup at smc.vnet.net
- Subject: [mg39200] Fit or Interpolate
- From: sophtwarez at hotmail.com (David Seruyange)
- Date: Mon, 3 Feb 2003 01:10:16 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
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