[postgis-users] Extract nodes in a Polygon Mosaic (Topology)

[Andreas Neumann]

Hello all,

I have a polygon mosaic (lets say administrative units, municipalities)
and would like to get a list of nodes where 3 or more polygons meet or 2
polygons depart at the edge of the mosaic. Is there any straight forward
way to extract these nodes?

I have read about topology support in Postgis and found this:
http://postgis.refractions.net/support/wiki/index.php?PostgisTopology -
whats the state of this project?

Thanks for any hints on my two questions.

Andreas


-- 
Andreas Neumann
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