[Tagging] Benefits of namespaces

François Lacombe fl.infosreseaux at gmail.com
Thu Dec 20 00:04:14 UTC 2018

Le mer. 19 déc. 2018 à 22:26, Richard <ricoz.osm at 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 +
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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/tagging/attachments/20181220/0ee37734/attachment.html>

More information about the Tagging mailing list