Fityk
Fityk is nonlinear curve-fitting and data analysis software. It allows data visualization, separation of overlapping peaks, and least squares fitting using standard Levenberg-Marquardt algorithm, a genetic algorithm, or Nelder-Mead simplex method. It knows about many functions (mostly bell-shaped, like Gaussian, Loretzian, Pearson 7, Voigt, Pseudo-Voigt, and Doniach-Sunjic) and user-defined functions can be easily added. It also enables background substracting, data calibration, and task automation with a simple script language. It is being developed to analyze powder diffraction patterns, but is also used in chromatography, photoluminescence, infrared, and Raman spectroscopy, and can be used to fit analytical functions to any kind of data. The most similar program to Fityk is probably PeakFit.
| Tags | Scientific/Engineering Chemistry Visualization |
|---|---|
| Licenses | GPL |
| Operating Systems | Windows Windows POSIX Linux Mac OS X |
| Implementation | C++ |
Recent releases
- 21 Jun 2009 23:55
Changes: Two flags were added to the configure script: --with-xylib and --with-samples. xylib from the fityk tarball is no longer used by default. A few bugs in building scripts were fixed.
- 11 Jun 2009 21:01
Changes: The LogNormal function was added. The status bar was redesigned. The license was changed from the GPLv2 to the GPLv2+.
- 15 Apr 2008 10:40
Changes: A few bugs were fixed.
- 18 Mar 2008 00:42
Changes: The syntax of the Fityk mini-language was changed slightly. An option to save a plot as a PNG image was added.
- 15 Feb 2008 00:01
Changes: Support for the pdCIF file format was added.
