I would like to render some route relations with mapnik (e.g. route="hiking" relations that link multiple ways), using a 'standard' postgresql database created by osm2pgsql if possible.
I see that osm2pgsql using the "default" default.style file creates a 'route' column in planet_osm_line, but I am not sure if this is created from route relations, or just ways tagged with 'route'? There is another table planet_osm_rels, which looks like it might be the thing I need, but I am not sure how to write the SQL to extract the geometries of all of the ways in the relation for rendering. Arrays within tables look daunting... Does anyone have an example of this they can point me to please? Thanks Graham. -- Graham Jones Hartlepool, UK.
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