Thanks Daniel,
Daniel Kastl ha scritto:
For routing with Dijkstra algorithm you only need a "valid" road
network with information about source (start) and target (end) of each
link. That's all, and you even don't need something like a geometry
column.
Ok, I understand what is a valid table, as it is a table "routable",
this meaning that it is basically a list of branches with two fields
indicating the two nodes. The question is: if I have a shape file (I
assume it comes from a ArcGis environment) and who provided it claims it
is topologically valid (btw I have two, one with nodes and one with
branches), but I cannot see in the table generated from shp2pgsql any
field (because actually in the shape file there isn't this information):
is there a way to transform it into something readable from one of the
shortest_path functions?
Thanks a lot
Andrea Maschio
http://wwwsuperandrew.it
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