Hi Sandro, Thank you very much for your quick response - helps me a lot!! Best wishes, willi
-----Ursprüngliche Nachricht----- Von: "Sandro Santilli" <[email protected]> Gesendet: 24.01.2012 09:03:01 An: "PostGIS Users Discussion" <[email protected]> Betreff: Re: [postgis-users] PostGIS 2.0 - network topology - crosses edges (SQL/MM: Topo-Net: NEDNODE, NEDLINK) >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 ___________________________________________________________ SMS schreiben mit WEB.DE FreeMail - einfach, schnell und kostenguenstig. Jetzt gleich testen! http://f.web.de/?mc=021192 _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
