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v.net.centrality(1grass) | Grass User's Manual | v.net.centrality(1grass) |
NAME¶
v.net.centrality - Computes degree, centrality, betweeness, closeness and eigenvector centrality measures in the network.KEYWORDS¶
vector, network, centrality measuresSYNOPSIS¶
v.net.centralityFlags:¶
- -g
-
- -a
-
- --overwrite
-
- --verbose
-
- --quiet
-
Parameters:¶
- input=name
-
- layer=integer
-
- output=name
-
- cats=range
-
- where=sql_query
-
- afcolumn=name
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- abcolumn=name
-
- degree=name
-
- closeness=name
-
- betweenness=name
-
- eigenvector=name
-
- iterations=integer
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- error=float
-
DESCRIPTION¶
v.net.centrality computes degree, closeness, betweenness and eigenvector centrality measures.NOTES¶
The module computes various centrality measures for each node and stores them in the given columns of an attribute table, which is created and linked to the output map. For the description of these, please check the following wikipedia article. If the column name is not given for a measure then that measure is not computed. If -a flag is set then points are added on nodes without points. Also, the points for which the output is computed can be specified by cats, layer and where parameters. However, if any of these parameters is present then -a flag is ignored and no new points are added.EXAMPLES¶
Compute closeness and betweenness centrality measures for each node and produce a map containing not only points already present in the input map but a map with point on every node.betweenness=betweenness -a
SEE ALSO¶
v.net, v.generalizeAUTHORS¶
Daniel Bundala, Google Summer of Code 2009, StudentGRASS 6.4.4 |