FITYK(1)

💖 FITYK(1) — the glow-up 💖

okay bestie, so this is the General Commands Manual page for fityk and cfityk, and I'm about to make it make sense fr fr. Buckle up. 🎀

✨ NAME ✨

fityk — non-linear curve fitting and data analysis. that's it, that's the whole vibe. 👑

🌸 SYNOPSIS 🌸

fityk [OPTION]... [FILE]...
cfityk [OPTION]... [FILE]...

two names, same energy. pick your fighter. 🦋

🫶 DESCRIPTION 🫶

So this manpage is gonna give you the brief rundown on the fityk and cfityk programs — they do nonlinear fitting of analytical functions (esp. the peak-shaped ones, you know the ones) onto data (usually experimental data). Translation: it's for nonlinear peak separation and analysis. periodt. 💅

It was originally developed for analyzing diffraction patterns, but bestie it can be used in other fields too, because the concepts and operations that are specific to crystallography are separated from the rest of the program. clean separation, iconic design decision honestly. ✨

Fityk offers, and I'm listing all of it because it's a lot and it's all slay:

• various nonlinear fitting methods
• subtracting background
• calibrating data
• easy placement of peaks and changing peak parameters
• automation of common tasks with scripts
• and much more

The main advantage of the program is a flexibility — parameters of peaks can be arbitrarily binded with each other, eg. width of peak can be an independent variable, can be the same as width of other peak or can be given by complicated — common for all peaks — formula. like, the power? unmatched. 🔥

The program comes in two versions:

• fityk — the GUI version 👑
• cfityk — the command line version 💀

A user manual for fityk and cfityk can be found in /usr/share/doc/fityk/html/fityk-manual.html. go read it, iykyk. 📖

🎀 OPTIONS 🎀

• -h, --help — Print the usage and exit. classic. does what it says, no notes. 🙈
• -V, --version — Print the version number and exit. ✨

Use --help to see the full list of options. bestie this manpage is just the appetizer, the real menu is in --help. 🍓

💜 AUTHOR 💜

This manual page was written by Carlo Segre <segre@iit.edu> and updated by Marcin Wojdyr. we love a collaborative effort. 🧚

okay that's the whole page, tysm for reading, you ate that. 🌈 this was from FITYK(1) in the General Commands Manual, dated January 8, 2006, and the source/version line says FITYK(1) on both ends because symmetry is hot. bye bestie, go fit some peaks. 💖🌸