On Mon, Jun 15, 2009 at 12:02 PM, Ben Laenen<[email protected]> wrote: > MP wrote: >> So currently, if I want to know "how was the way drawn in time T", I >> had to get history of the way, then find out which nodes were used by >> the way in time T, then get history from each of the nodes and pick >> appropriate node from the history, given the time. Then combine this >> into output XML which I can view >> >> Is there some automated tool that will do that? > > Now, what I really want to see here is something similar, but for relations: > being able to ask for a certain version of a relation from the history and > seeing how it looked back then with its members also like they were at that > time.
But remember that the nodes in way change, and the positions of the nodes change, without the version number of the relation incrementing. So you don't really want a system that shows you what the relation X version Y looks like, you want relation X timestamp T. Does anyone want to propose a moniker for "point releases" of objects i.e. all the variations in a object over time that occur between version increments on the object itself? Cheers, Andy > If someone edits some roads nowadays and doesn't see that there are route > relations on the roads you could end up easily with a situation where it's > virtually impossible to know how the route was going, because ways were moved, > merged, and deleted, and the list of way ids you get from the history is not > helping a bit. The only option would then be to search for and contact the > person who created that route there and hope that he's still active in OSM and > still has his notes somewhere so he can retag that route. If not, then the > only option to fix something is to resurvey, and that seems like a waist of > time given that the information is in the database. > > Ben > > > _______________________________________________ > talk mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk > _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
