>>Ideally there would >>be a start_date and end_date tag also that defines the period when the >>object was present. > > +1 >
So, I think that the question is related to whether you want something in the current dataset to represent the things that were 'here' at a previous time or have a way of entering 'new' historical data. Taking the burning man festival example - could you add an area tagged with snapshot date (rather than tagging individual items), which indicates that this portion of the map requires the renderer to 'find' historical OSM data from that date? This would remove the need to tag a lot individual items, but does not prevent a scheme where it would be possible to add 'new' historical data into the OSM data with start/stop dates. As for rendering, would this area be given a sepia tone? :-) For someone like flickr I would imagine that they would always want to render the historic portions, so would likely keep the 'old' snapshots of OSM data to hand. Cheers, Mungewell. _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
