@awinkler We also have a pretty active forum - https://forum.openhistoricalmap.org/ & Discord channel at OSMWorld Discord - #openhistoricalmap at https://discord.gg/openstreetmap
One other note - we do not use a database license for our freely-available downloads and user submissions default to CC0, although we have some flexibility around that when importing existing datasets.
OpenHistoricalMap (@ohm@mapstodon.space)
@Life_is OSM aims to represent only the *current* state of things, so when names or whatever change, we just update the map. The complete revision history is kept, but it's not simple to query.
The project that does aim to record all past usages and data is #OpenHistoricalMap: https://www.openhistoricalmap.org/
In that, each map feature gets a start and end date.
Just in time for #StateOfTheMapUS next week, we landed some long-awaited features on top of the many other things we quietly released on #OpenHistoricalMap over the past few months. Check out the details on the forum:
Hard to believe it’s already been three months since we deployed our big round of performance improvements and more. Since then, the development team has continued to push out periodic improvements to the site, some more noticeable than others. You just haven’t heard about it from me because I’ve been a little busy. I’ve started writing up similar announcements for OpenStreetMap too. Think of those announcements as a preview of things to come in OpenHistoricalMap the next time we update our code...
In the past month, the #OpenHistoricalMap community added 49,939 dated elements, 5,965 buildings, and 293,247¼ railroad miles. The average age of a dated element fell by 14 months, and the average year shifted over 6 months later. All this with the help of 31 new contributors – welcome!
https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics
My OpenStreetMap daily edit graph has taken a beating since I started mapping exclusively on OpenHistoricalMap.
In the past month, the #OpenHistoricalMap community added 50,639 dated elements, 5,919 buildings, and 3,996¼ railroad miles. The average age of a dated element fell by 15 months, and the average year shifted 9 months later. All this with the help of 25 new contributors – welcome!
https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics
The #VectorMaps branch of @openrailwaymap has started double-tracking #OpenStreetMap and #OpenHistoricalMap data. Finally – appreciate #AbandonedRailways in the proper setting!
https://forum.openhistoricalmap.org/t/openrailwaymap-adds-openhistoricalmap/446
The next generation of OpenRailwayMap now sources its historical railway data from OpenHistoricalMap. ORM’s Infrastructure layer sports a new date filter. When you set it to any year in the past, the layer switches from OpenStreetMap data to OHM data. Hover over any rail line to highlight it. Click on it to see basic details such as the name and dates of significance or an option to edit the map. For example, ORM now features the former Hauptbahnhof Karlsruhe, which was decomissioned over a cent...
OpenHistoricalMap
end0fline
Sam Wilson
CharliePlett
Richard Welty