Le mer. 19 déc. 2018 à 22:26, Richard <ricoz....@gmail.com> a écrit :
> the OSM tag chain should be imho used only for very common things because > each member > of the chain will turn up as a "top level" tag in the database and > taginfo. > We are using such chains in Power, Pipeline and Telecom groups. It works well : power=transformer + transformer=distribution + voltage:primary=20000 + voltage:secondary=400 man_made=street_cabinet + street_cabinet=telecom + telecom=exchange + telecom:medium=copper + operator=Orange Adding power: and telecom: prefixes would be seriously bad to encourage for contribution and extremely redundant. Furthermore, refining of well used tags often get discouraged because of their usage. This dosn't include the redundancy in namespaces' prefixes which is worse. > If used extensively for attributes I would consider it polution of the > database. > It is also much less flexible as you can specify only one attribute at a > time. > If you have to define more than one attribute with the same name it may be the attribute isn't weel defined. Have you examples please? All the best François
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