Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
NAME
v.net.bridge  - Computes bridges and articulation points in the network.
KEYWORDS
vector, 
network, 
articulation points
SYNOPSIS
v.net.bridge
v.net.bridge --help
v.net.bridge input=name output=name  [arc_layer=string]   [node_layer=string]   [arc_column=name]   [arc_backward_column=name]   [node_column=string]  method=string  [--overwrite]  [--help]  [--verbose]  [--quiet]  [--ui] 
Flags:
- --overwrite
 
- Allow output files to overwrite existing files
 
- --help
 
- Print usage summary
 
- --verbose
 
- Verbose module output
 
- --quiet
 
- Quiet module output
 
- --ui
 
- Force launching GUI dialog
 
 
Parameters:
- input=name [required]
 
- Name of input vector map
 
- Or data source for direct OGR access
 
- output=name [required]
 
- Name for output vector map
 
- arc_layer=string
 
- Arc layer
 
- Vector features can have category values in different layers. This number determines which layer to use. When used with direct OGR access this is the layer name.
 
- Default: 1
 
- node_layer=string
 
- Node layer
 
- Vector features can have category values in different layers. This number determines which layer to use. When used with direct OGR access this is the layer name.
 
- Default: 2
 
- arc_column=name
 
- Arc forward/both direction(s) cost column (number)
 
- arc_backward_column=name
 
- Arc backward direction cost column (number)
 
- node_column=string
 
- Node cost column (number)
 
- method=string [required]
 
- Feature type
 
- Options: bridge, articulation
 
- bridge: Finds bridges
 
- articulation: Finds articulation points
 
 
v.net.bridge finds bridges and articulation points in a network.
Bridge in a network is an edge/line whose removal would disconnect 
the (sub-)network. A node is an articulation point if its removal 
would disconnect the (sub-)network. For more information and formal 
definitions check the wikipedia entries:
bridge 
and 
articulation 
point.
The output of the module contains the selected 
features. For method=bridge, lines corresponding to 
bridges are copied from the input map to the output map. On the 
other hand, for method=articulation, points are created on 
the positions of articulation points.
In GRASS GIS, line is not always a single line 
segment. It might be, and often is, a sequence of line segments 
between two intersections. Also, articulation point is a standard 
graph theoretic terminology which is slightly misleading in GRASS. 
An articulation point in graph theory is an articulation
node in GRASS terminology. 
v.net,
v.category
Daniel Bundala, Google Summer of Code 2009, Student
Wolf Bergenheim, Mentor
SOURCE CODE
  Available at:
  v.net.bridge source code
  (history)
  Latest change: Thursday Feb 03 11:10:06 2022 in commit: 547ff44e6aecfb4c9cbf6a4717fc14e521bec0be
Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
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© 2003-2023
GRASS Development Team,
GRASS GIS 8.2.2dev Reference Manual