On Wed, Feb 14, 2018 at 05:17:09PM +0100, Roland Olbricht wrote: > > - timestamps however cannot only potentially be used in lieu of > > changeset ids to group contributions, the information itself is > > problematic because it allows to profile contributions over time > > Timestamps are necessary to correctly figure out which nodes have belonged > to a certain version of a way, and similarly for ways and nodes belonging to > relations.
Just want to hilight this. Timestamps are not optional when working with history data, without them it isn't possible to figure out which object of a specific versions refers to other specific object versions. This is a result of objects refering to other objects by id only and not by (id, version) pair. So when working with non-history (ie only current data), you don't need any metadata at all (to correctly interpret the geodata). But when working with history data, you need both, version and timestamp. Jochen -- Jochen Topf joc...@remote.org https://www.jochentopf.com/ +49-351-31778688 _______________________________________________ dev mailing list dev@openstreetmap.org https://lists.openstreetmap.org/listinfo/dev