ОПИСАНИЕ

v.net is used for vector network maps maintenance. It reports about the current network graph status. It also permits to globally insert missing nodes and to connect unconnected nodes to the graph within a given distance threshold.

ПРИМЕЧАНИЯ

If vector editing is required to modify the graph, v.digit or v.edit can be used. Separately, Linear Referencing System is available in GRASS.

ПРИМЕРЫ

Spearfish based examples:

Create nodes globally for all line ends and intersections: 

v.net in=streams out=streams_node

Merge in nodes from a separate map within given threshold: 

echo "1|601653.5|4922869.2|start
2|593330.8|4924096.6|end" | v.in.ascii cat=1 x=2 y=3 out=startend col="cat integer, \
                         east double precision, north double precision, label varchar(43)"

#create lines map connecting points to network (on layer 2)
v.net myroads points=startend out=myroads_net op=connect thresh=200

СМ. ТАКЖЕ

v.digit, v.edit, v.net.iso, v.net.path, v.net.steiner, v.net.salesman

АВТОРЫ

Radim Blazek, ITC-Irst, Trento, Italy
Martin Landa, FBK-Irst, Trento, Italy

Last changed: $Date: 2007-12-17 07:45:01 -0600 (Пн, 17 дек 2007) $

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