Services & Resources / Wolfram Forums / MathGroup Archive

MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

Fitting experimental data

  • To: mathgroup at
  • Subject: [mg85462] Fitting experimental data
  • From: "Ausman, Kevin" <ausman at>
  • Date: Mon, 11 Feb 2008 06:12:14 -0500 (EST)

I am trying to fit experimental data (a list of {x,y} points) with a 
model that produces a similar list of points. It seems that FindMinimum 
with a Levenberg Marquardt method makes the most sense; unfortunately, I 
can't seem to get it to work.


In this example, xptData is the list of experimental data. simulatedData 
returns just the y axis as a list (assuming the same x axis), and the 
resulting list, as you might imagine, depends on k1auto and a1initauto. 
However, this results in a number of errors, I think because it tries to 
evaluate simulatedData for the general case rather than for specific 
instances of k1auto and a1initauto. simulatedData requires the use of 
ListConvolve, NDSolve, and a number of other functions that seem to 
preclude a general solution rather than a specific solution.

Does anyone have any thoughts on how to overcome this problem? Thanks!

Kevin Ausman
ausman at

  • Prev by Date: Re: General question about WebMathematica
  • Next by Date: Re: NDSolve and Parametric Plot
  • Previous by thread: Re: NDSolve Percision
  • Next by thread: Re: Fitting experimental data