> From: Alex Sims [mailto:a...@softgrow.com] > Subject: Re: [talk-au] Historical rail lines > > On 26/11/2012 10:38 AM, mick wrote: > > I'm in two minds about removing 'historical' data. > > > > Yes, objects no longer visible on the ground shouldn't be rendered on > the map. > I've been following this discussion with interest. We do mark and should > mark administrative boundaries which are not visible on the ground. Can > the logic for these boundaries which be usefully extended to historical > data?
The subject of historical rail lines and historical roads came up on the talk-us@ mailing list relatively recently. As always, there were multiple views. The result of the discussion was that the general view is that historic information only belongs in OSM when there is some trace on the ground. As a practical matter, historic roads are not generally mapped in OSM. Whenever a road is physically realigned and the new alignment mapped in OSM the old alignment is not saved as a separate way. If I survey the area I only look at how it looks now so I don't know if the old alignment in the database is because it was aligned that way in the past or because the data was inaccurate. _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
