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g.gui.mapswipe.1grass - Man Page

Interactively compares two maps by swiping a visibility bar.


general, GUI, display


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



Print usage summary


Verbose module output


Quiet module output


Force launching GUI dialog



First (top/right) raster map


Second (bottom/left) raster map


View mode
Options: swipe, mirror
Default: swipe
swipe: swiping the upper map layer to show the map layer below
mirror: synchronized maps side by side


The Map Swipe is a wxGUI component which allows the user to interactively compare two raster maps of the same area by revealing different parts of the raster maps. It is useful e.g. for comparing raster maps from different time periods. Map Swipe can be launched from the menu File -> Map Swipe.

Map Swipe allows you to:

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

See Also

wxGUI components

See also the user wiki page.


Anna Kratochvilova, Czech Technical University in Prague, Czech Republic

Source Code

Available at: wxGUI Map Swipe source code (history)

Accessed: Tuesday Mar 19 11:03:30 2024

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GRASS 8.3.2 GRASS GIS User's Manual