Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2008

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

Search the Archive

Problems with FindMinimum

  • To: mathgroup at smc.vnet.net
  • Subject: [mg90701] Problems with FindMinimum
  • From: teodorom at hotmail.com
  • Date: Sun, 20 Jul 2008 06:32:35 -0400 (EDT)

Hi,
I'm having problems with the FindMinimum.
I'm currently getting errors like this:
FindMinimum::nrlnum: The function value {0.335521+43899.8 \
[ImaginaryI],0.376043+43899.8 \[ImaginaryI],0.424669+43899.8 \
[ImaginaryI],<<6>>,0.311208+46311.9 \[ImaginaryI],<<27>>} is not a
list of real numbers with dimensions {37} at {x0,y0,x1,y1,hh0,hh1} =
{0.00580647,-2.13969*10^20,-9.86301*10^-6,1.23875*10^20,-30574.3,19.6042}.
I guess this happens because the function I'm trying to fit with
experimantal data, gets imaginary values for some values of the
parameters.
How can I avoid this and get meaningful results ?
Thanks
         Teodoro


  • Prev by Date: Re: Spreadsheet like input
  • Next by Date: Re: Spreadsheet like input
  • Previous by thread: Re: Collapsing cell groups [was: Mathematica
  • Next by thread: Re: Problems with FindMinimum