FREE_BIFT(1)

📦
version 2026.2 · 4 versions
, in ubuntu resolute, ubuntu stonking

💖 free_bift — the manual page, but make it cute 💖

okay bestie, sit down, hydrate, and let me tell you about free_bift ✨ this is the manual page for free_bift 2026.2, living in section 1 (User Commands), and honestly? she's giving science. she's giving math. she's giving "I compute things while you were sleeping" 💅

🎀 NAME 🎀

free_bift — literally the manual page for free_bift 2026.2, no cap.

🌸 DESCRIPTION 🌸

so the whole vibe is:

usage: free_bift [OPTIONS] FILES

what she does, bestie, is calculate the density as function of distance p(r) curve from an I(q) scattering curve. that's the whole job. that's the main character arc 🦋

🌈 positional arguments 🌈

  • FILE — the I(q) files you're converting into p(r). give her the files, she gives you the curve. iconic behavior 💖

✨ options ✨

  • -h, --help — show this help message and exit. she's helpful like that 🫶
  • -v, --verbose — switch to verbose mode. she starts oversharing (affectionate) 🗣️✨
  • -V, --version — show program's version number and exit. quick lil "who am I" moment 💅
  • -o, --output OUTPUT — Output filename. name your baby 🌸
  • -u, --unit {nm,??,A} — Unit for q: inverse nm or ??ngstrom? yeah she's asking you, she genuinely doesn't know which unit vibe you're on 😭
  • -n, --npt NPT — number of points in p(r) curve. how many points, bestie? you decide 🔥
  • -s, --scan SCAN — Initial alpha-scan size to guess the start parameter. lil scan to get the guess going ⭐
  • -m, --mc MC — Number of Monte-Carlo samples in post-refinement. yes, Monte-Carlo, she's fancy like that 👑
  • -t, --threshold THRESHOLD — Sample at average ?? threshold*sigma in MC. the ?? is doing its best, we love her anyway 💀

💜 the lore 💜

free_bift is a Python implementation of the Bayesian Inverse Fourier Transform. this code is the implementation of Steen Hansen J. Appl. Cryst. (2000). 33, 1415-1421. based on the BIFT from Jesse Hopkins, available at:

https://sourceforge.net/p/bioxtasraw/git/ci/master/tree/bioxtasraw/BIFT.py

she aims at being a drop in replacement for datgnom of the ATSAS suite. so like... she's coming for the throne, respectfully 👑

🦋 SEE ALSO 🦋

The full documentation for free_bift is maintained as a Texinfo manual. If the info and free_bift programs are properly installed at your site, the command

info free_bift

should give you access to the complete manual. go read it, bestie, it's right there 📖💖

ngl, that's the whole page. no notes. periodt. ✨

free_bift 2026.2 — March 2026 — section FREE_BIFT(1). mwah 💋 bye bestie, go compute something gorgeous 🎀

📦 where this page comes from