FREE_GUINIER(1)

💖 NAME 💖

free_guinier — the manual page for free_guinier version 2026.2, bestie 💅

---

🌸 DESCRIPTION 🌸

okay so real talk, here's how you call it:

free_guinier [OPTIONS] FILES

what does it DO tho? it calculates the radius of gyration by doing a linear fit on the logarithmic intensities across a whole set of scattering curves ✨ like, a bunch of curves go in, one very cute radius comes out, slay.

🎀 positional arguments 🎀

• FILE — the dat files holding your scattering curves. that's the actual data, the main character of this whole operation 👑

✨ options ✨

• -h, --help — prints this help message and then dips. classic.
• -v, --verbose — flips on verbose mode, so it tells you everything it's doing instead of being mysterious about it 🫶
• -V, --version — shows the program's version number and exits. bye!
• -o, --output OUTPUT — the output filename. name your baby.
• -f, --format FORMAT — the output format, and your choices are native, csv, ssf 💫
• -u, --unit {nm,??,A} — the unit for q. like, inverse nm? or ??ngstrom? that's the question 🧐

lowkey important lore: free_guinier is an open-source implementation of the autorg algorithm that originally lived inside the ATSAS suite. but because this tool used a different theory, some results may differ. so like, don't come for it if the numbers aren't a perfect match, it's giving independent thinker 💀

---

🔭 SEE ALSO 🔭

the full documentation for free_guinier is maintained as a Texinfo manual 📖 if the info and free_guinier programs are properly installed at your site, then this command:

info free_guinier

should give you access to the complete manual. yes bestie, that's the whole thing, go read it 💜

---

and that's the vibe check, we're done here 🦋 this was free_guinier version 2026.2, dated March 2026, and it's a FREE_GUINIER(1) situation, no cap. mwah 💅✨