42 lines
1.7 KiB
Markdown
42 lines
1.7 KiB
Markdown
---
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title: "Fityk"
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chunk: 1/1
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source: "https://en.wikipedia.org/wiki/Fityk"
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category: "reference"
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tags: "science, encyclopedia"
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date_saved: "2026-05-05T10:11:23.018116+00:00"
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instance: "kb-cron"
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---
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Fityk is curve fitting and data analysis application, predominantly used to fit analytical,
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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.
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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.
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Fityk is free and open source, distributed under the terms of GNU General Public License, with binaries/installers available free of charge on the project's website. It runs on Linux, macOS, Microsoft Windows, FreeBSD and other platforms. It operates either as a command line program or with a graphical user interface.
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It is written in C++, using wxWidgets, and providing bindings for Python and other scripting languages.
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== Features ==
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three weighted least squares methods:
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Levenberg-Marquardt algorithm,
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Nelder-Mead method
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Genetic algorithm
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about 20 built-in functions and support for user-defined functions
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equality constraints
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data manipulations,
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handling series of datasets,
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automation of common tasks with scripts.
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== Alternatives ==
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The programs LabPlot, MagicPlot and peak-o-mat have similar scope.
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More generic data analysis programs with spread-sheet capabilities include the proprietary Origin and its clones QtiPlot (paid, closed source) and SciDAVis (non-paid, open source).
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== See also ==
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== External links ==
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Official website
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== References == |