On 3/9/15 4:58 PM, Bryce Nesbitt wrote: > > The broader point is intact. > > When making sense of abandoned bridges and oddly rounded buildings in > various places, it is super helpful > to see the context of the prior railroad grade. It helps in mapping > from the air and on the ground. > > A given railway grade may (and often does) exist as razed, abandoned, > disused, and reused (e.g. highway=residential or highway=service, > leisure=park) along it's length. So how can we represent the former > way, and the current use of each bit, > in a rational way? > it's probably worthwhile to consider OpenHistoricalMap as a resource for recording information about spatial entities that no longer exist in the modern world. this relieves us of the argument about representing them in OSM.
i am now in the opening phase of a campaign to describe old auto racing venues in OHM; in some cases they are related to existing physical entities (e.g., the first and second Watkins Glen Grand Prix courses used public roads of the time, most of which still exist. likewise, many airport courses have been used over the years and are no longer; but the airports frequently still exist. these things go in OHM because while the physical entities still exist, the racing usage is long gone.) the issue of how to relate OHM objects to OSM objects is an open question; right now i am not attempting to provide links from OHM entities to OSM entities and instead am depending on a leaflet application to use OSM as a basemap to provide context. richard -- rwe...@averillpark.net Averill Park Networking - GIS & IT Consulting OpenStreetMap - PostgreSQL - Linux Java - Web Applications - Search
signature.asc
Description: OpenPGP digital signature
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
