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g.gui.mapswipe

Interactively compares two maps by swiping a visibility bar.

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

Example:

g.gui.mapswipe

grass.script.run_command("g.gui.mapswipe", first=None, second=None, mode="swipe", verbose=False, quiet=False, superquiet=False)

Example:

gs.run_command("g.gui.mapswipe")

Parameters

first=name
    First (top/right) raster map
second=name
    Second (bottom/left) raster map
mode=string
    View mode
    Allowed values: swipe, mirror
    Default: swipe
    swipe: swiping the upper map layer to show the map layer below
    mirror: synchronized maps side by side
--help
    Print usage summary
--verbose
    Verbose module output
--quiet
    Quiet module output
--qq
    Very quiet module output
--ui
    Force launching GUI dialog

first : str, optional
    First (top/right) raster map
    Used as: input, raster, name
second : str, optional
    Second (bottom/left) raster map
    Used as: input, raster, name
mode : str, optional
    View mode
    Allowed values: swipe, mirror
    swipe: swiping the upper map layer to show the map layer below
    mirror: synchronized maps side by side
    Default: swipe
verbose: bool, optional
    Verbose module output
    Default: False
quiet: bool, optional
    Quiet module output
    Default: False
superquiet: bool, optional
    Very quiet module output
    Default: False

wxGUI Map Swipe

DESCRIPTION

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:

  • 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)

Map swipe screenshot
Figure: 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, wxGUI components

See also the user wiki page.

AUTHOR

Anna Kratochvilova, Czech Technical University in Prague, Czech Republic

SOURCE CODE

Available at: g.gui.mapswipe source code (history)
Latest change: Friday Feb 21 12:41:42 2025 in commit 7d39c54