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data fitting function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg40823] data fitting function
  • From: gongli at cutey.com (gong)
  • Date: Sat, 19 Apr 2003 23:03:31 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

hi

i would like to fit some data X = {{x1,y1},...,{xn,yn}} to a set of
functions, then have this assigned to a function i can call:

fittedfunc[x1] \approx y1

moreover, i need fittedfunc to be as fast as possible in terms of
evaluation, since it will be used in a loop.  i think it should be
ideally a compiled function.

i tried 

f=Function[x,Fit[X,{functions},x]

bit im finding a major speed hit here, i think every time i call f[x]
it refits the data.

any help would be greatly appreciated.

-gong


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