i.group(1)

📦
version 8.4.2 · 8 versions
, in fedora 44

🦋 i.group(1) — the GRASS GIS User's Manual glow-up 🦋

okay bestie, so this is i.group from the GRASS GIS User's Manual and honestly? it's giving imagery map management icon. let's get into it 💖

✨ NAME ✨

i.group — creates, edits, and lists groups of imagery data. that's it, that's the whole vibe 🎀

🔑 KEYWORDS 🔑

imagery, map management

📜 SYNOPSIS 📜

i.group
i.group --help
i.group [-rlsg] group=name  [subgroup=name]   [input=name[,name,...]]
[file=name]   [--help]  [--verbose]  [--quiet]  [--ui]

🚩 Flags 🚩

  • -r — remove selected files from specified group or subgroup. bye bestie 👋
  • -l — list files from specified (sub)group 📋
  • -s — list subgroups from specified group 🗂️
  • -g — print in shell script style, so it's all scriptable and cute 🐚
  • --help — print usage summary (when you're lost, queen) 🙈
  • --verbose — verbose module output, aka it tells you everything 💬
  • --quiet — quiet module output, aka shhh 🤫
  • --ui — force launching GUI dialog 🖥️✨

🎀 Parameters 🎀

  • group=name [required] — name of imagery group. non-negotiable bestie, you gotta give her a name 👑
  • subgroup=name — name of imagery subgroup
  • input=name[,name,...] — name of raster map(s) to include in group
  • file=name — input file with one raster map name per line 📄

💜 DESCRIPTION 💜

i.group lets you collect raster map layers into an imagery group by assigning them to user-named subgroups or other groups. this is the moment where you get to run analyses on literally any combination of the raster map layers in a group. no cap 🔥

you create the groups and subgroups, and you select the raster map layers that get to reside in them. it's very main character energy, you're literally curating the guest list.

imagery analysis programs like g.gui.gcp, i.rectify, i.ortho.photo and others will ask you for the name of an imagery group whose data are to be analyzed. meanwhile imagery analysis programs like i.cluster and i.maxlik ask you for the imagery group and imagery subgroup whose data are to be analyzed. so yeah, they need both. iykyk 💅

📝 NOTES 📝

the i.group options are only available for imagery map layers in the current LOCATION_NAME. periodt.
subgroup names may not contain more than 12 characters. TWELVE. that's the limit bestie, don't push it 😭

🌸 EXAMPLE 🌸

this example runs in the "landsat" mapset of the North Carolina sample dataset. the following command creates a group and subgroup containing only the visible light bands of Landsat-7:

i.group group=vis_bands subgroup=vis_bands input=lsat7_2000_10,lsat7_2000_20,lsat7_2000_30

ate that. absolutely slayed 💅✨

👀 SEE ALSO 👀

The GRASS 4 Image Processing manual

g.gui.gcp, i.cluster, i.maxlik, i.rectify, i.ortho.photo

go read those too, bestie, they're all connected 🫶

👑 AUTHORS 👑

  • Michael Shapiro, U.S.Army Construction Engineering Research Laboratory
  • Parser support: Bob Covill (Tekmap, Canada)

thank you for your service legends 🎀

💻 SOURCE CODE 💻

Available at: i.group source code (history)

Accessed: Saturday Jan 17 05:41:40 2026

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© 2003-2025 GRASS Development Team, GRASS GIS 8.4.2 Reference Manual

and that's the whole page bestie!! 🌈 this was i.group from the GRASS GIS User's Manual, running on GRASS 8.4.2, page dated Saturday Jan 17 05:41:40 2026, © 2003-2025 GRASS Development Team 💖 mwah, go make some imagery groups, you've got this 🦋✨🌸

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