NAME

       g.gui.mapswipe  - Interactively compares two maps by swiping a visibility bar.

KEYWORDS

       general, GUI, display

SYNOPSIS

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

   Flags:
       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:
       first=name
           First (top/right) raster map

       second=name
           Second (bottom/left) raster map

       mode=string
           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

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)
       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: wxGUI Map Swipe source code (history)

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

       © 2003-2019 GRASS Development Team, GRASS GIS 7.8.2 Reference Manual