Folks,
we noticed that, despite the use of ST_SimplifyPreserveTopology, non-adjacent
polygons may overlap; this happens when there is a long and narrow water body of
between them (think of a fiord), but this body is not itself a polygon.
To solve this issue we came up with the idea of adding an "universe polygon"; that
is, a polygon that enclose the entire extent of a table, so that every polygon has
a left and right polygon: would this do the trick ?
Regards,
Luca Morandini
Data Architect - AURIN project
Melbourne eResearch Group
Department of Computing and Information Systems
University of Melbourne
Tel. +61 03 903 58 380
Skype: lmorandini
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