[postgis-users] Build direction in a network, only from a starting point

[aborruso]

Hi Nicolas,
thank you.


Nicolas Ribot-2 wrote
> A recursive CTE query will allow you to walk the network, checking if
> startPoint/endPoint of lines are connected as you want.
> st_reverse could then be used to correct these lines.
> (http://blog.cleverelephant.ca/2010/07/network-walking-in-postgis.html)

In this way it seems to me that I can walk the network, but it does not
gives to me a way to automatically know the edges with wrong directions. I
must built a way to do it. Am I right?



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