[GRASS-user] shortest path in grass 6.2
ec.jkd at tpcsed.com
ec.jkd at tpcsed.com
Tue Oct 30 02:28:36 EDT 2007
hi,
I have an issue while doing a shortest path between two points in grass 6.2:
GRASS 6.2.0 (spearfish60):~ > echo "1 2 4" | v.net.path in=roads out=road1
Building graph:
Registering arcs ... 100%
Flattening the graph ... done.
Graph was built.
WARNING: No point with category 2
WARNING: No point with category 4
Attributes:
cat - path unique category assigned by module
id - path id (read from input)
fcat - from point category
tcat - to point category
sp - result status:
0 - OK, path found
1 - node is not reachable
2 - point of given category does not exist
cost - travelling costs (on the network, not to/from network)
fdist - the distance from first point to the network
tdist - the distance from the network to second point
WARNING: 2 points of given category missing
Building topology ...
0 primitives registered
0 areas built
0 isles built
Attaching islands:
Attaching centroids: Topology was built.
Number of nodes : 0
Number of primitives: 0
Number of points : 0
Number of lines : 0
Number of boundaries: 0
Number of centroids : 0
Number of areas : 0
Number of isles : 0
can you help mwe with this,plz
thanking you,
Jainita
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