Hello Sandro, I'll surely do things the way you suggest, I realize it is what makes the most sense for me.
Thanks for the quick answer ! Cheers, Rémi-C 2013/10/22 Sandro Santilli <[email protected]> > On Tue, Oct 22, 2013 at 01:51:53PM +0200, Rémi Cura wrote: > > Hey dear List, > > (and hey Sandro ;-) ) > > > > somebody knows if there is a mechanism to make explicit link between 2 > > topogeoms of different type (lineal and puntal)?. > > For instance in a road network with topogeom "road" and topogeom > > "road_intersection", I would like to link the "road_intersection" to all > > incoming/outcoming "road". > > > > I was thinking of using classical relations (foregin key etc), but maybe > > there is something I don't understand. > > > > I'm going to do this a lot so I would appreciate suggestions making it > > compatible with current postgis_topology functionning. > > The TopoGeometry type was created mostly to let people deal with them > the way they used to deal with Geometry objects, so you can use classical > relations. > > BUT if you get down one level you can use GetNodeEdges against a node > associated > with a "road_intersection" value to obtain a list of edge identifiers, and > then > go back up to find linear TopoGeometry objects whose definition include > those > edge identifiers. Those relations are already there, it's only your choice > to > use them. > > --strk; > _______________________________________________ > postgis-users mailing list > [email protected] > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >
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