[Tagging] Fwd: OSM Wikibase is now live

Yuri Astrakhan yuriastrakhan at gmail.com
Tue Sep 18 18:12:21 UTC 2018

Janko, this is an awesome idea! We could use it for templates - e.g. iD
editor could show a list of these, and selecting one would pre-populate it.
The combination would contain both keys (e.g. something that user would
need to type in), and tags (key=specific value).  It would be a bit more
difficult to go the other way -- given an OSM feature, determine which
tag_combination(s) would match it.

I am not sure I understood about the key+value property.  Are you asking
for a new string property to store "key=value" of the current tag?  But
that's already being stored as a sitelink (shown in the upper right
corner). The only possible problem is that "_" and spaces are treated as
equals, so in some rare cases we may have to store it as a string too.

On Tue, Sep 18, 2018 at 1:52 PM Janko Mihelić <janjko at gmail.com> wrote:

> This is wonderful news! I hope this will soon become the new principal tag
> database to get semantic meaning out of OSM tags. Thank you to all involved!
> And now a few questions:
> Why isn't there key+value as a property? The Q888 (bridge:movable=bascule)
> should have a property "Tag" which has the whole string,
> "bridge:movable=bascule". That brings us to my second question:
> Are there plans to have tag combinations? I have a feeling combinations
> are going to be the real killer application, because only with combinations
> you can connect tags and real world classes of objects. For example, a
> football field can't be put in the wikibase with any one tag. We need a tag
> combination, leisure=pitch + sport=soccer.
> Bridge:movable=bascule is also only an attribute of a bridge, not an
> instance of a movable bridge.
> So I propose a new value, "instance_of":"tag_combination", and in it, we
> can have two or more "Tag" properties that I proposed in the first half of
> this post.
> Again, thanks for making this service!
> Janko
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