Hi Sandro, Approximately how much time/money would you project to enable SQL/MM Network Topology? Thanks,Chris
> Date: Tue, 24 Jan 2012 09:34:21 +0100 > From: [email protected] > To: [email protected] > Subject: Re: [postgis-users] PostGIS 2.0 - network topology - crosses edges > (SQL/MM: Topo-Net: NEDNODE, NEDLINK) > > 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
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