On 1/7/20 9:14 PM, Rob H Warren wrote: > >>> Richard, >>> You know the OSM data model does not deal well with change and has poor >>> (geometry<>feature<>label) separation. My suggestion is that since the >>> roadway has not changed significantly, have the geometry encoded as a >>> series of nodes that get allocated to different temporal ways for the >>> different "features" of that route over time. It is not a great solution >>> but it works and is compatible with the renderers. The properties of >>> roadways (width, etc...) are encoded at the way levels in OSM which lets >>> you reuse the OSM highway tagging system. >> >> based on my experiences in the past with JOSM, i think such an approach >> would be pretty error prone and difficult. over on Slack, Leon Karcher >> suggested tagging the single way with its most appropriate recent tags >> and using relations for the older one. > > I don't believe that the relations will covey the state / properties of the > road as a way would.
not sure i understand. Leon Karcher gave this example over on slack, which seems like it works to me: https://openhistoricalmap.org/way/198180780 my concern comes from my experience back in 2009-10 when fixing screw ups from the TIGER 2007 import was a think; teasing out duplicate ways in JOSM was a pain in the ass, and i don't think anything has happened in the intervening 10 years that improves anything. it will be error prone and fussy unless editing tools improve. >> way way back in 2015, this section of the OHM wiki page got set up: >> https://wiki.openstreetmap.org/wiki/Open_Historical_Map#Short-term_plans the >> link to OHM/Tags was never filled in in the 4+ years since. i think it's >> high time we started describing how people are tagging to reflect historic >> features and dating. i certainly am working through a lot with my stuff, and >> the method Leon is using could certainly go in as well, as examples of >> experiments as this is largly experimental at this time. > > I've checked, the page isn't locked. Why don't you start documenting how you > are tagging roads? it had been locked, someone must have changed that. richard -- [email protected] Averill Park Networking - GIS & IT Consulting OpenStreetMap - PostgreSQL - Linux Java - Web Applications - Search _______________________________________________ Historic mailing list [email protected] https://lists.openstreetmap.org/listinfo/historic
