Puneet Varma (Editor)

Fityk

Updated on
Edit
Like
Comment
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit
Developer(s)
  
Marcin Wojdyr

Operating system
  
Cross-platform

Written in
  
C++

Fityk

Initial release
  
2004; 13 years ago (2004)

Stable release
  
1.3.0 / May 25, 2015; 21 months ago (2015-05-25)

Repository
  
github.com/wojdyr/fityk

Fityk is a curve fitting and data analysis application, predominantly used to fit analytical, bell-shaped functions to experimental data. It is positioned to fill the gap between general plotting software and programs specific for one field, e.g. crystallography or XPS.

Contents

Originally, Fityk was developed to analyse powder diffraction data. It is also used in other fields that require peak analysis and peak-fitting, like chromatography or various kinds of spectroscopy.

Fityk is distributed under the terms of GNU General Public License, but since version 1.0.0, subscription is required for downloading binaries. It runs on Linux, Mac OS X, Microsoft Windows, FreeBSD and other platforms. It operates either as a command line program or with a graphical user interface.

It is written in C++, using wxWidgets, and providing bindings for Python and other scripting languages.

Features

  • three weighted least squares methods:
  • Levenberg-Marquardt algorithm,
  • Nelder-Mead method
  • Genetic algorithm
  • about 20 built-in functions and support for user-defined functions
  • equality constraints
  • data manipulations,
  • handling series of datasets,
  • automation of common tasks with scripts.
  • Alternatives

    The programs peak-o-mat and MagicPlot have similar scope.

    More generic data analysis programs with spread-sheet capabilities include the proprietary Origin and its free clones QtiPlot and SciDAVis.

    References

    Fityk Wikipedia