Hi, It is trivial to do in PostGIS (ST_LineMerge) or anything that can deal with standard (OGC) geospatial types, e.g. RGeo in Ruby.
However from my experience I can tell you that working with route relation geometries is very tricky because of how they are mapped. At least for road and bicycle relations to get a real picture of the route you need to take into account ways that are NOT in the relation but are tagged with appropriate "ref". Otherwise if you consider only ways from the you will end up with a lot of disconnected components in your geometry. Anyway, not sure what do you plan to do with those routes but in the last few weeks I have done a lot of work (e.g. [1]) with road and bicycle (and also boundary but that's OT here) relations/ways so I can share if you have specific questions. Paweł [1]https://wiki.openstreetmap.org/wiki/OSMonitor/Poland_Major_Roads _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
