NAME

       d.what.vect   -  Allows  the  user  to  interactively query a vector map layer at user-selected locations
       within the current geographic region.

KEYWORDS

       display, vector

SYNOPSIS

       d.what.vect
       d.what.vect help
       d.what.vect [-1txdfe] map=name[,name,...]  [--verbose]  [--quiet]

   Flags:
       -1
           Identify just one location

       -t
           Terse output. For parsing by programs

       -x
           Print information as plain text to terminal window

       -d
           Print topological information (debugging)

       -f
           Enable flashing (slower)

       -e
           Open form in edit mode

       --verbose
           Verbose module output

       --quiet
           Quiet module output

   Parameters:
       map=name[,name,...]
           Name of existing vector map

DESCRIPTION

       d.what.vect outputs the category value(s) associated with user-specified  location(s)  in  user-specified
       vector map layer(s).

       The  program  activates  the  mouse,  and  expects  the user to indicate the location(s) to be queried by
       depressing a mouse button over desired location(s) within the current geographic  region  in  the  active
       display  frame  on  the  graphic  monitor.  Query  results  from map(s) are by default displayed in a new
       monitor, where label values can be added or changed. Using parameter -x information will be displayed  as
       plain text to terminal window.

       This module always reports standard acres, even when the location uses US Survey feet as the map unit.

EXAMPLE

       A  sample d.what.vect session is given below. Although it is not necessary that the user first displays a
       vector map to be queried in the active display frame, it is helpful to have a  map  displayed  there  for
       reference.

       d.vect map=roads

       Displays the roads vector map layer on the graphics monitor.

       d.what.vect map=roads,geology

       After  typing  this, the user moves the mouse to a desired location on the displayed roads map layer, and
       presses the left mouse button to query the category value of the roads and the geology vector map at this
       location.  The program then outputs the category value of a line type corresponding to this user-selected
       map location, for the vector map queried by the user.

       The query may be repeated as often as desired using the  left  mouse  button.  The  middle  mouse  button
       toggles the flash color.  The right button on the mouse is used to quit the d.what.vect session.

SEE ALSO

        d.rast
       d.vect
       d.what.rast
       g.region
       v.what

AUTHOR

       Jim Hinthorne, Central Washington University
       Upgrades by Dennis Finch, National Park Service and Radim Blazek, ITC-Irst, Trento, Italy

       Last changed: $Date: 2012-02-25 05:14:51 -0800 (Sat, 25 Feb 2012) $

       Full index

       © 2003-2013 GRASS Development Team

GRASS 6.4.3                                                                                  d.what.vect(1grass)