1d.what.vect(1)                Grass User's Manual               d.what.vect(1)
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NAME

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

10       display
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SYNOPSIS

13       d.what.vect
14       d.what.vect help
15       d.what.vect [-1txdfe] map=name[,name,...]  [--verbose]  [--quiet]
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17   Flags:
18       -1
19           Identify just one location
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21       -t
22           Terse output. For parsing by programs
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24       -x
25           Print information as plain text to terminal window
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27       -d
28           Print topological information (debugging)
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30       -f
31           Enable flashing (slower)
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33       -e
34           Open form in edit mode
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36       --verbose
37           Verbose module output
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39       --quiet
40           Quiet module output
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42   Parameters:
43       map=name[,name,...]
44           Name of existing vector map
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DESCRIPTION

47       d.what.vect outputs the category value(s) associated  with  user-speci‐
48       fied location(s) in user-specified vector map layer(s).
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50       The  program  activates the mouse, and expects the user to indicate the
51       location(s) to be queried by depressing a  mouse  button  over  desired
52       location(s)  within the current geographic region in the active display
53       frame on the graphic monitor. Query results from map(s) are by  default
54       displayed in a new monitor, where label values can be added or changed.
55       Using parameter -x informations will be displayed as plain text to ter‐
56       minal window.
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EXAMPLE

59       A  sample d.what.vect session is given below. Although it is not neces‐
60       sary that the user first displays a vector map to  be  queried  in  the
61       active  display  frame, it is helpful to have a map displayed there for
62       reference.
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64       d.vect map=roads
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66       Displays the roads vector map layer on the graphics monitor.
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68       d.what.vect map=roads,geology
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70       After typing this, the user moves the mouse to a  desired  location  on
71       the  displayed  roads  map  layer, and presses the left mouse button to
72       query the category value of the roads and the  geology  vector  map  at
73       this  location.   The program then outputs the category value of a line
74       type corresponding to this user-selected map location, for  the  vector
75       map queried by the user.
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77       The query may be repeated as often as desired using the left mouse but‐
78       ton. The middle mouse button toggles the flash color.  The right button
79       on the mouse is used to quit the d.what.vect session.
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SEE ALSO

82       d.rast
83       d.vect
84       d.what.rast
85       g.region
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AUTHOR

88       Jim Hinthorne, Central Washington University
89       Upgrades  by Dennis Finch, National Park Service and Radim Blazek, ITC-
90       Irst, Trento, Italy
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92       Last changed: $Date: 2007-03-15 21:04:39 +0100 (Thu, 15 Mar 2007) $
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94       Full index
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96       © 2003-2008 GRASS Development Team
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100GRASS 6.3.0                                                     d.what.vect(1)
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