1v.net.bridge(1)             GRASS GIS User's Manual            v.net.bridge(1)
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NAME

6       v.net.bridge   -  Computes  bridges and articulation points in the net‐
7       work.
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KEYWORDS

10       vector, network, articulation points
11

SYNOPSIS

13       v.net.bridge
14       v.net.bridge --help
15       v.net.bridge      input=name      output=name        [arc_layer=string]
16       [node_layer=string]     [arc_column=name]    [arc_backward_column=name]
17       [node_column=string]  method=string  [--overwrite]   [--help]   [--ver‐
18       bose]  [--quiet]  [--ui]
19
20   Flags:
21       --overwrite
22           Allow output files to overwrite existing files
23
24       --help
25           Print usage summary
26
27       --verbose
28           Verbose module output
29
30       --quiet
31           Quiet module output
32
33       --ui
34           Force launching GUI dialog
35
36   Parameters:
37       input=name [required]
38           Name of input vector map
39           Or data source for direct OGR access
40
41       output=name [required]
42           Name for output vector map
43
44       arc_layer=string
45           Arc layer
46           Vector  features can have category values in different layers. This
47           number determines which layer to use. When used with direct OGR ac‐
48           cess this is the layer name.
49           Default: 1
50
51       node_layer=string
52           Node layer
53           Vector  features can have category values in different layers. This
54           number determines which layer to use. When used with direct OGR ac‐
55           cess this is the layer name.
56           Default: 2
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58       arc_column=name
59           Arc forward/both direction(s) cost column (number)
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61       arc_backward_column=name
62           Arc backward direction cost column (number)
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64       node_column=string
65           Node cost column (number)
66
67       method=string [required]
68           Feature type
69           Options: bridge, articulation
70           bridge: Finds bridges
71           articulation: Finds articulation points
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DESCRIPTION

74       v.net.bridge finds bridges and articulation points in a network.
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NOTES

77       Bridge  in a network is an edge/line whose removal would disconnect the
78       (sub-)network. A node is an articulation point  if  its  removal  would
79       disconnect  the  (sub-)network. For more information and formal defini‐
80       tions check the wikipedia entries: bridge and articulation point.
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82       The  output  of  the  module  contains  the  selected   features.   For
83       method=bridge, lines corresponding to bridges are copied from the input
84       map to the output map. On  the  other  hand,  for  method=articulation,
85       points are created on the positions of articulation points.
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87       In  GRASS  GIS,  line is not always a single line segment. It might be,
88       and often is, a sequence of line segments  between  two  intersections.
89       Also,  articulation  point  is  a  standard graph theoretic terminology
90       which is slightly misleading in GRASS.  An articulation point in  graph
91       theory is an articulation node in GRASS terminology.
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EXAMPLES

94            TBD
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SEE ALSO

97        v.net, v.category
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AUTHORS

100       Daniel Bundala, Google Summer of Code 2009, Student
101       Wolf Bergenheim, Mentor
102

SOURCE CODE

104       Available at: v.net.bridge source code (history)
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106       Accessed: Mon Jun 20 16:47:06 2022
107
108       Main  index  | Vector index | Topics index | Keywords index | Graphical
109       index | Full index
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111       © 2003-2022 GRASS Development Team, GRASS GIS 8.2.0 Reference Manual
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115GRASS 8.2.0                                                    v.net.bridge(1)
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