- Identifies the geographic coordinates associated with point locations given in display coordinates.
d.where [-dlwf] [at=x,y[,x,y,...]] [input=name] [--help] [--verbose] [--quiet] [--ui]
- Output lat/long in decimal degree
- Output lat/long referenced to current ellipsoid
- Output lat/long referenced to WGS84 ellipsoid using datum transformation parameters defined in current location (if available)
- Output frame coordinates of current display monitor (percentage)
- Print usage summary
- Verbose module output
- Quiet module output
- Force launching GUI dialog
- Display coordinates to convert
- File from which to read coordinates ("-" to read from stdin)
is an interactive
allows the user, using the pointing device (mouse), to
identify the geographic coordinates associated with point
locations within the current geographic region in the
active display frame on the graphics monitor.
Each mouse click will output the easting and northing of the point
currently located beneath the mouse pointer.
A mouse-button menu is presented so the user knows which
mouse buttons to use. The output is always printed to the
terminal screen; if the output is redirected into a file,
it will be written to the file as well.
Left: where am i
Middle: draw to/from here
Right: quit this
The left mouse button prints the coordinates at the selected point,
the middle mouse button allows you to query two points (they are connected
by a line for convenience). Use the right mouse button to exit the module.
This program uses the current geographic region setting and active frame.
It is not necessary, although useful, to have displayed a map in the current
frame before running d.where
. The -d
flag allows the user to
optionally output latitude/longitude coordinates pair(s) in decimal degree
rather than DD:MM:SS format. The -w
flag is only valid
if a datum is defined for the current location.
If the -f
flag is given the x,y frame coordinates of the active display
monitor will be returned (as a percentage, 0,0 is bottom left).
Query position in map (North Carolina sample dataset):
U.S. Army Construction Engineering
Last changed: $Date: 2014-12-11 15:12:46 -0800 (Thu, 11 Dec 2014) $
Available at: d.where source code (history)
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GRASS Development Team,
GRASS GIS 7.2.3svn Reference Manual