2012/12/4 Friedrich Volkmann <[email protected]>: > Pieren <[email protected]> wrote: >> One principle I like in OSM is "one feature, one OSM element": >> http://wiki.openstreetmap.org/wiki/One_feature,_one_OSM_element > An address is not a feature. An address is an attribute of a feature. An > address never exists on its own in the real world. There cannot be an > address somewhere in no man's land. It always refers to some property.
generally agree with you, but you might also see it as a feature (in which case a node is a poor representation) >> A single address should be tagged only once. If you have several POI's >> with the same address, tag the address on its own node. > This is not how mappers usually handle this case. They set the address on > each POI, because otherwise applications cannot find out which POI has which > address. applications could find out which POIs are inside which address-polygon, but it requires some processing, it is not impossible, but it might take too long if you want up to date data (incremental updates) depending on your calculation capacities. > There are many possibilities where to put the node, but each of them has > some cases where it won't work, and there are always arguments and edit wars > about this. This is because each of the position is only part of the truth. > The whole truth is that an address is actually an attribute of a 2- oder > 3-dimensional object. +1 cheers, Martin _______________________________________________ Tagging mailing list [email protected] http://lists.openstreetmap.org/listinfo/tagging
