r.tile(1grass)

📦
version 8.5.0 · 10 versions
, in alpine 3.24, ubuntu stonking

✨ r.tile ✨

okay bestie, welcome to ur new fave raster-splitting era 💖 this is the page for the GRASS module r.tile, and yes, it does exactly what it says on the tin: it splits a raster map into tiles. 🧩

🌸 KEYWORDS 🌸

raster, tiling

🎀 SYNOPSIS 🎀

r.tile
r.tile --help
r.tile input=name output=string width=integer height=integer
[overlap=integer]   [--help]  [--verbose]  [--quiet]  [--ui]

🫶 Flags:

  • --help — prints the usage summary, aka the "help me pls" button 💅
  • --verbose — verbose module output, so it tells u everything going on 📢
  • --quiet — quiet module output, for when u want silence and vibes 🤫
  • --ui — forces the GUI dialog to launch, fancy mode activated ✨

🦋 Parameters:

  • input=name [required] — the name of the input raster map. no map, no tiles, periodt 💀
  • output=string [required] — the output base name, aka the prefix all ur lil tile babies get 👑
  • width=integer [required] — width of tiles (in columns) 📏
  • height=integer [required] — height of tiles (in rows) 📐
  • overlap=integer — overlap of tiles, for when ur tiles want to be a lil codependent 🫂

💜 DESCRIPTION 💜

r.tile retiles an existing raster map with x and y tile sizes that you define. ur the main character, u make the rules 💅✨

🌈 NOTES 🌈

okay so here's the tea, bestie ☕

r.tile generates a separate raster for each tile. lowkey iconic behaviour. it's literally equivalent to running g.region along with r.resample in a double loop. no cap. 🌀

the module can be used to split a large raster map into smaller tiles, e.g. for further parallelized analysis on a cluster computing system. so if ur out here doing big-girl computing, this is ur moment 🔥

the overlap is defined in rows/columns. that's it. that's the note. 🎀

🌸 EXAMPLE 🌸

Retiling example for the North Carolina DEM, served fresh just for u 🍓:

g.region raster=elevation -p
# rows:       1350
# cols:       1500
# generating 2 x 2 = 4 tiles (width=1500/2, height=rows/2)
r.tile input=elevation output=elev_tile width=750 height=675

this creates 4 tiles with the prefix elev_tile (named: elev_tile-000-000, elev_tile-000-001, elev_tile-001-000, ...). four lil tiles, all named, all slaying ✨

👀 SEE ALSO 👀

g.region, r3.retile

🧚 AUTHOR 🧚

Glynn Clements — respectfully, legend behaviour 👑

📜 SOURCE CODE 📜

Available at: r.tile source code (history)

Latest change: Thursday May 08 20:58:05 2025 in commit: 4144ba81fa125e1549fc52e1cf5feb4fa004be8b

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© 2003-2026 GRASS Development Team, GRASS 8.5.0 Reference Manual

ok bestie that's the whole page, u ate that 🫶 this was r.tile from the GRASS 8.5.0 manual (GRASS Development Team, © 2003-2026) — go forth and tile, u got this 💖✨🌈

📦 where this page comes from