On Tue, Jan 24, 2012 at 08:52:54AM +0100, [email protected] wrote: > Hi, > > I'm trying to build a linear application (topology network) with PostGIS > 2.0.0SVN. > > My real world situation has crosses edges with no nodes (water lines or > hiqh voltage power lines in different heights or levels, where both edges > have nothing to do with each other). > > Topo-Geo assumes full planar topology and gives me an error on this > crossing edges. > (SQL/MM Spatial exception - egometry crosses an edge) > > The only possiblity I see at the moment to build it up in different > topology schemas, which would be ok for example between water lines and > low voltage cables, but not between high voltage power lines themselves. > > Is it possible with PostGIS 2.0 (at the moment) to build up this situation > within on topology schema? > > If yes - how? > If no - will it come up in future versions?
Not possible with Topo-Geo. As you point out SQL/MM Topo-Geo assumes planar topology. But SQL/MM Network-Topology will let you model your network. Network-topology is not available in 2.0, but could surely come up in future versions if anyone will be investing time / money on it. --strk; () Free GIS & Flash consultant/developer /\ http://strk.keybit.net/services.html _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
