1d.what.vect(1) Grass User's Manual d.what.vect(1)
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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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10 display
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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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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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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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82 d.rast
83 d.vect
84 d.what.rast
85 g.region
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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)