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d.where(1)		    GRASS GIS User's Manual		    d.where(1)

NAME
       d.where	 - Identifies the geographic coordinates associated with point
       locations given in display coordinates.

KEYWORDS
       display,	sampling, position, querying

SYNOPSIS
       d.where
       d.where --help
       d.where [-dlwf]	[at=x,y[,x,y,...]]   [input=name]   [--help]   [--ver-
       bose]  [--quiet]	 [--ui]

   Flags:
       -d
	   Output lat/long in decimal degree

       -l
	   Output lat/long referenced to current ellipsoid

       -w
	   Output lat/long referenced to WGS84 ellipsoid using datum transfor-
	   mation parameters defined in	current	location (if available)

       -f
	   Output frame	coordinates of current display monitor (percentage)

       --help
	   Print usage summary

       --verbose
	   Verbose module output

       --quiet
	   Quiet module	output

       --ui
	   Force launching GUI dialog

   Parameters:
       at=x,y[,x,y,...]
	   Display coordinates to convert

       input=name
	   File	from which to read coordinates ("-" to read from stdin)

DESCRIPTION
       d.where is an interactive program  that	allows	the  user,  using  the
       pointing	device (mouse),	to identify the	geographic coordinates associ-
       ated 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 cur-
       rently located beneath the mouse	pointer.  A mouse-button menu is  pre-
       sented  so the user knows which mouse buttons to	use. The output	is al-
       ways printed to the terminal screen; if the output is redirected	into a
       file, it	will be	written	to the file as well.

       Mouse buttons:
	    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 mod-
       ule.

NOTES
       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).

EXAMPLE
       Query position in map (North Carolina sample dataset):
       d.rast elevation
       d.where

SEE ALSO
	d.what.rast, d.what.vect, g.region, v.what.rast, v.what.vect

AUTHORS
       James Westervelt,
       Michael Shapiro,
       U.S. Army Construction Engineering Research Laboratory

SOURCE CODE
       Available at: d.where source code (history)

       Main  index | Display index | Topics index | Keywords index | Graphical
       index | Full index

       A(C) 2003-2020 GRASS Development	Team, GRASS GIS	7.8.5 Reference	Manual

GRASS 7.8.5							    d.where(1)

NAME | KEYWORDS | SYNOPSIS | DESCRIPTION | NOTES | EXAMPLE | SEE ALSO | AUTHORS | SOURCE CODE

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