g.gui.mapswipe(1grass)

✨ g.gui.mapswipe ✨

okay bestie, so g.gui.mapswipe is a GRASS module, and honestly? it's giving main character energy — it lets you interactively compare two maps by swiping a visibility bar 💅

🌈 KEYWORDS 🌈

general, GUI, display

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🫶 SYNOPSIS 🫶

g.gui.mapswipe
g.gui.mapswipe --help
g.gui.mapswipe  [first=name]   [second=name]   [mode=string]   [--help]
[--verbose]  [--quiet]  [--ui]

🎀 Flags

• --help — prints the usage summary, like a little cheat sheet
• --verbose — verbose module output (she's chatty, she's telling you everything)
• --quiet — quiet module output (she's keeping it lowkey)
• --ui — force launching the GUI dialog

🦋 Parameters

• first=name — the First (top/right) raster map
• second=name — the Second (bottom/left) raster map
• mode=string — View mode<br> Options: swipe, mirror<br> Default: swipe<br> swipe: swiping the upper map layer to show the map layer below<br> mirror: synchronized maps side by side

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💖 DESCRIPTION 💖

The Map Swipe is a wxGUI component which lets you interactively compare two raster maps of the same area by revealing different parts of them, no cap. It's useful e.g. for comparing raster maps from different time periods. You can launch Map Swipe from the menu File -> Map Swipe.

Map Swipe allows you to:

• switch orientation of the swipe line (horizontal or vertical)
• zooming, panning
• automatically load maps when opening Map Swipe with two selected raster maps in Layer Manager
• compare 2 raster maps or load different combinations of raster and vector maps and set transparency (advanced mode)
• save display to graphics file
• display text labels with map names
• choose between 'swipe' mode (default) and 'mirror' mode (synchronized maps displayed side by side)
• change the appearance of cursor in 'mirror' mode (available in Map Swipe settings)

Pre and post disaster images of the tsunami in Japan in 2011. The upper MODIS image taken on February 26, 2011, shows the coastline under normal conditions while the lower MODIS image on March 13, 2011, shows a clear view of tsunami flooding along the coastline. Water, black and dark blue in these false-color images, still covers the ground as much as five kilometers (three miles) from the coast. Source: Earth Observatory/NASA

literally iconic imagery fr fr 🫶

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👀 SEE ALSO 👀

wxGUI, wxGUI components

See also the user wiki page.

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💜 AUTHOR 💜

Anna Kratochvilova, Czech Technical University in Prague, Czech Republic

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⭐ SOURCE CODE ⭐

Available at: wxGUI Map Swipe source code (history)

Accessed: Tuesday Sep 08 11:56:21 2026

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

and that's the whole thing bestie, no notes 💅✨ this was g.gui.mapswipe(1grass) from GRASS 8.5.0 — go swipe some maps, you absolute icon 👑🌸