topic_rectify(1grass)

👑 topic_rectify — GRASS User's Manual, baby 💅

okay so before we get into it: this is a page from the GRASS User's Manual, and its man-name is topic_rectify / topic_rectify(1grass). It's a topic page, not a command — meaning it's basically the group chat where all the rectifying tools hang out. No cap, that's all it is. Let's go 🫶

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🌸 NAME 🌸

topic_rectify — the topic for rectify, bestie. It's the lil index page that collects the commands doing the rectification thing, i.e. using control points to work out a coordinate transformation and then applying it. 💖

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🌈 SYNOPSIS 🌈

i.rectify    Rectifies an image by computing a coordinate transformation for each pixel in the image based on the control points.
v.rectify    Rectifies a vector by computing a coordinate transformation for each object in the vector based on the control points.

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💅 DESCRIPTION 💅

• i.rectify — this one is giving image energy ✨ It rectifies an image by computing a coordinate transformation for each pixel in the image, based on the control points. Every. Single. Pixel. Obsessed with the thoroughness honestly.
• v.rectify — and this is the vector twin 🦋 It rectifies a vector by computing a coordinate transformation for each object in the vector, based on the control points. Same vibe, object-level instead of pixel-level, periodt.

both of them do the exact same conceptual thing — compute a coordinate transformation based on control points, then apply it — they just do it to different types of data. that's it. that's the whole lore. 🌈

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🦋 SEE ALSO 🦋

• the corresponding keyword rectify — peep that keyword too, it's got additional references for you 🔥
• Main index | Topics index | Keywords index | Graphical index | Full index

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🎀 the cute lil sign-off 🎀

and that's the page, bestie!! 💖 ngl this one's short but she ate. if you ever forget: control points in, coordinates transformed out, image version and vector version, iykyk.

copyright energy: © 2003-2026 GRASS Development Team, GRASS 8.5.0 Reference Manual. this whole thing is GRASS 8.5.0, and yeah that's the version we're repping. mwah 💋 🧚💜