topic_transformation(1grass)

📦
version 8.5.0 · 9 versions
, in alpine 3.24, ubuntu stonking

💖 topic_transformation 💖

okay bestie, this lil page lives in the GRASS User's Manual (yes, that GRASS — Geographic Resources Analysis Support System) and it's literally just a cozy little hub of every command that does a transformation for you. think of it as the group chat where all the transformation girlies hang out 🎀

no cap, if you're trying to move stuff around, rotate it, squash it, or drag your data into a whole other mathematical dimension, one of these six is your girl. periodt.

✨ Topic: transformation ✨

here's the whole squad, alphabetical, exactly as they come 💅

  • i.fft — the Fast Fourier Transform (FFT), but make it image processing. it takes your image and flips it into frequency space, main character energy 🌈
  • i.ifft — the Inverse Fast Fourier Transform (IFFT) for image processing. it's the undo button for i.fft, and honestly? iconic.
  • i.pca — Principal components analysis (PCA) for image processing. squishes all your bands down into the ones that actually matter 🍓
  • i.tasscap — Performs Tasseled Cap (Kauth Thomas) transformation. yes that's the real name, no I'm not kidding, it's giving remote-sensing royalty 👑
  • m.transform — Computes a coordinate transformation based on the control points. you feed it your control points, it does the math, you say thank you 🫶
  • v.transform — Performs an affine transformation (shift, scale and rotate) on vector map. shift, scale, rotate — the holy trinity of "why is my map crooked" 🔥

🌸 also see

See also the corresponding keyword transformation for additional references. if this list wasn't enough for you (greedy, love that), go peep the keyword and there's more where that came from 👀

🦋 the indexes (iykyk)

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

get lost in there for three hours like the rest of us, that's the vibe 💀

💜 little reminder bestie: every single one of those commands above is its own man page, so man i.fft, man v.transform, etc., when you wanna go deeper. this page is just the corkboard with all the polaroids pinned to it ✨

and that's the whole page, babe! brought to you by the GRASS Development Team, from the GRASS 8.5.0 Reference Manual, © 2003-2026. slay, ate, no crumbs left, the transformation topic is closed 🎀💅🦋

📦 where this page comes from