r3.null(1)

📦
version 8.4.2 · 8 versions
, in fedora 44

✨ NAME ✨

ok so bestie, meet r3.null — she's a GRASS GIS User's Manual page and her whole entire job is to explicitly create the 3D NULL-value bitmap file. that's it. that's the girl. 💅

🎀 KEYWORDS 🎀

raster3d, map management, null data, no-data, voxel

🦋 SYNOPSIS 🦋

r3.null
r3.null --help
r3.null map=string  [setnull=val[-val][,val[-val],...]]   [null=float]
[--help]  [--verbose]  [--quiet]  [--ui]

🌸 Flags 🌸

  • --help — prints the usage summary, like a little cheat sheet for when you forgot what you were doing (relatable)
  • --verbose — verbose module output, aka she tells you everything 🗣️
  • --quiet — quiet module output, aka she's giving mysterious and silent 🫶
  • --ui — forces the GUI dialog to launch, for the girlies who love a little window moment ✨

🌈 Parameters 🌈

  • map=string [required] — the 3D raster map whose null values you're about to modify. this one is mandatory, no skipping her, she's the main character 👑
  • setnull=val[-val][,val[-val],...] — the list of cell values you want set to NULL. give her a single value, a range like val-val, or a whole comma-separated parade of them 🎉
  • null=float — the value you want to replace the null value by 🔄

💖 DESCRIPTION 💖

r3.null modifies the NULL values of a 3D raster map. lowkey does exactly what it says on the tin, and honestly? we love a straightforward queen 🧚

🌟 SEE ALSO 🌟

r.null

💜 AUTHORS 💜

Roman Waupotitsch, Michael Shapiro, Helena Mitasova, Bill Brown, Lubos Mitas, Jaro Hofierka — the icons who built her 🫶

⭐ SOURCE CODE ⭐

Available at: r3.null source code (history)

Accessed: Saturday Jan 17 05:41:15 2026

Main index | 3D raster index | Topics index | Keywords index | Graphical index | Full index

no cap, that's the whole page, and she ate 💅

ok so that's r3.null(1) from the GRASS GIS 8.4.2 Reference Manual, running on GRASS 8.4.2, © 2003-2025 GRASS Development Team. tysm for coming to my ted talk bestie, go set some nulls, mwah 💖✨🌸

📦 where this page comes from