Hi, Steve, The image does not load. Where can I find it? Colleagues of mine want to have a look.
Regards, David On Thu, 30 Dec 2021 at 23:36, Stephen V. Mather <[email protected]> wrote: > Hi David, > > This is a good example. I have modified this to walk networks before, and > it's a minimal and understandable example: > > http://blog.cleverelephant.ca/2010/07/network-walking-in-postgis.html > > There may be some better ways to do this, as the postgres tooling has > changed quite a bit. The use of a function may be precluded by some modern > fancy join type. Others can speak better to that than I can these days. > > Also, if you don't mind installing one more thing, pgrouting will do > network traversal much more efficiently than a *WITH RECURSIVE* network > traversal: > > https://pgrouting.org/ > > > Cheers, > > Best, > > Steve > > > On 12/30/21 4:13 PM, Shaozhong SHI wrote: > > *WARNING: This email originated outside of Cleveland Metroparks. DO NOT > CLICK links or attachments unless you recognize the sender and know the > content is safe.* > In hydrological network, how to trace network from each source node and > check whether the trace can reach the sea? > > Any examples? > > Regards, > > David > > _______________________________________________ > postgis-users mailing > [email protected]https://lists.osgeo.org/mailman/listinfo/postgis-users > > _______________________________________________ > postgis-users mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/postgis-users >
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