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EASY-FIT Express 2.0

Constrained nonlinear parameter estimation, data, curve and surface fitting.


Last Week downloads: 0
Total downloads: 727
  • Last Updated: Nov 23, 2011
  • License: Freeware Free
  • OS: Windows Vista/2003/XP/2000
  • Requirements: No special requirements

User reviews

3 out of 5 based on 1 ratings for EASY-FIT Express 2.0

For EASY-FIT Express 2.0Publisher's description


EASY-FIT Express is a Home & Education software developed by University of Bayreuth. After our trial and test, the software is proved to be official, secure and free. Here is the official description for EASY-FIT Express:

EditByBrothersoft: The software system solves constrained nonlinear parameter estimation problems. Synonyms are data fitting, nonlinear regression, parameter identification, curve and surface fitting. The numerical methods are based on highly efficient Gauss-Newton-SQP algorithms.
Model functions are defined in a modeling language called PCOMP and are interpreted and evaluated during runtime.


arbitrary fitting criteria depending on parameters to be estimated
additional nonlinear EQuality or inequality constraints
second independent model variable called concentration

numerical routines
Gauss-Newton-type SQP methods, various versions
automatic differentiation
alternative norms (sum of absolute values, maximum of absolute values)
confidence intervals for estimated parameters, correlation and covariance matrix
identification of significance levels for estimated parameters
extremely fast routines

user interface
convenient and flexible modeling language
'find' and 'filter' commands
extensive report and graphics facilities, also for Gnuplot
3D plots for two model or input variables, respectively
in- and output of data from and to text or Excel files

30 fitting criteria and data sets
100 model variables
2,000 time values
3,000 experimental data
200 linear or nonlinear constraints
- limited by size of internal working arrays

modeling language (PCOMP)
highly flexible Statements depending on parameters to be estimated
tabulated data, splines, linear and piecewise constant interpolation
indexed variables and functions
(nearly) no limitations for number of lines of code
you can free download EASY-FIT Express 2.0 now.

For EASY-FIT Express 2.0Related Software


Please be aware that Brothersoft do not supply any crack, patches, serial numbers or keygen for EASY-FIT Express,and please consult directly with program authors for any problem with EASY-FIT Express.