topic_algebra(1grass)

🌈 Topic: algebra 🌈

okay so bestie, welcome to the GRASS User's Manual 💖 — this page right here is topic_algebra(1grass), and it's the topic index for… you guessed it… algebra. ✨ it's giving math girl summer, and honestly? we ate.

if you're new here: GRASS is the GIS, and this is the roster of every tool that shows up when you go looking for algebra. raster algebra, 3D raster algebra, vector algebra, temporal algebra — all of it, all in one place. let's get into it. 🎀

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🦋 THE LINEUP 🦋

• r.mapcalc — the raster map calculator. yes, the one. the icon, the legend. 👑
• r.mapcalc.simple — calculates a brand new raster map from a simple r.mapcalc expression. lowkey easy mode, and we respect it. 💅
• r.mfilter — performs a raster map matrix filter. glow-up applied. ✨
• r.neighbors — makes each cell category value a function of the category values assigned to the cells around it, and stores those new cell values in an output raster map layer. it's giving "you are who you hang out with" fr fr. 🫶
• r.quantile — computes quantiles using two passes. two. passes. no shortcuts, just dedication. 💪
• r.texture — generates images with textural features from a raster map. so aesthetic. 🌸
• r3.mapcalc — raster map calculator, but 3D. the r3 remix. 🧊
• r3.neighbors — makes each voxel value a function of the values assigned to the voxels around it, and stores the new voxel values in an output 3D raster map. voxel besties stay together. 💜
• t.rast.algebra — applies temporal and spatial operations on space time raster datasets using temporal raster algebra. time AND space?? main character energy tbh. ⏳
• t.rast.mapcalc — performs spatio-temporal mapcalc expressions on temporally sampled maps of space time raster datasets.
• t.rast3d.algebra — applies temporal and spatial operations on space time 3D raster datasets using temporal 3D raster algebra. we went 3D, we went temporal, we went iconic. 🌟
• t.rast3d.mapcalc — performs r3.mapcalc expressions on maps of sampled space time 3D raster datasets.
• t.vect.algebra — applies temporal and spatial operations on space time vector datasets using temporal vector algebra. vectors said "me too." 💫
• v.neighbors — the neighborhood analysis tool for vector point maps. sqaud goals, but for points. 📍

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🔍 SEE ALSO 🔍

see also the corresponding keyword algebra for additional references. iykyk. 🧚

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Main index | Topics index | Keywords index | Graphical index | Full index

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and that's the whole vibe check, babe — every single one of those lil tools is one click away and they all live under the algebra keyword. go forth and calculate. 💖

© 2003-2026 GRASS Development Team — GRASS 8.5.0 Reference Manual. written by the GRASS Development Team, shipped in GRASS 8.5.0, dated 2003-2026, and yes the grannies on the team are still slaying. 🎀💅✨