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windows default iconFityk for Windows Publisher's description

Fityk [fi:tik] is a program for data processing and nonlinear curve fitting.

Fityk [fi:tik] is a program for data processing and nonlinear curve fitting.

It is primarily used

* by scientists who analyse data from powder diffraction, chromatography, photoluminescence and photoelectron spectroscopy, infrared and Raman spectroscopy, and other experimental techniques,

* to fit peaks – bell-shaped functions (Gaussian, Lorentzian, Voigt, Pearson VII, bifurcated Gaussian, EMG, Doniach-Sunjic, etc.),

but any functions can be fitted to any 2D (x,y) data.

More В»

* intuitive graphical interface (and also command line interface),
* support for many data file formats, thanks to the xylib library,
* dozens of built-in functions and support for user-defined functions,
* equality constraints,
* modelling error of the x coordinate of points (that can be caused by instrumental zero-shift or by sample displacement in powder diffraction),
* manual, graphical placement of peaks or auto-placement using peak detection algorithm,
* various optimization methods (standard Marquardt least-squares algorithm, Genetic Algorithms, Nelder-Mead simplex),
* handling series of datasets,
* automation with scripts,
* an add-on for powder diffraction data (Pawley refinement)
* modular architecture,
* open source licence (GPL),
* portability.

What's New in This Release:

В· bug fixes: UDFs (user-defined functions) did not work in ver. 0.9.5-6, a few fixes in the powder diffraction add-on and in other places
В· data operations: added aggregate functions argmin, argmax and count
В· GUI: redesigned the Data > Export dialog

System Requirements:

No special requirements.
Program Release Status: Major Update
Program Install Support: Install and Uninstall

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