[OSM-talk] Topology (was: OSM the mediocre alternative)

[Martijn van Oosterhout]

On 4/26/07, Artem Pavlenko <artem at mapnik.org> wrote:
> OK, I was hoping you have something to play with. I think investigating
> PostGIS topology or even fixing MySQL is a good plan. I'm not so sure about
> Oracle.

Is there a particular reason why we need PostGIS topology? If we store
ways as arrays of node IDs and index them (which can be done in
standard postgres) you get almost all the way. Add a trigger to
automatically regenerate the polyline wherever the array changes and
it should work just fine.

Have a nice day,
-- 
Martijn van Oosterhout <kleptog at gmail.com> http://svana.org/kleptog/