Fityk

Infobox_Software
name = Fityk



caption = Fityk under Ubuntu Linux
developer = Marcin Wojdyr
latest_release_version = 0.8.2
latest_release_date = August 20, 2007
operating_system = Cross-platform
genre = Curve fitting
license = GPL
website = [http://www.unipress.waw.pl/fityk www.unipress.waw.pl/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 and programs specific for one field, eg. crystallography or XPS.

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. 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.

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.

External links

* [http://www.unipress.waw.pl/fityk/ Fityk Home]