Re: [Tagging] Key "location" (was "Feature Proposal - Voting - entrance=*")

2011-10-14 Thread Martin Koppenhoefer
2011/10/14 Pieren :
> On Fri, Oct 14, 2011 at 3:43 PM, Martin Koppenhoefer
>  wrote:
>>> Well, we already have location=underground established (see
>>> http://wiki.openstreetmap.org/wiki/Key:location) and I think it would
>>> be a pity to have more than one way of indicating that something is
>>> underground.
>>
>
> 'established' is a big word. I'm surprised by the taginfo stats. I
> never used this tag myself and I don't remember if it was really
> discussed in the international lists.  It is in the wiki since July.


+1, I never wrote what is written above but I wrote more or less what
you wrote, please do your quoting with attention.

Cheers,
Martin

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Re: [Tagging] Key "location" (was "Feature Proposal - Voting - entrance=*")

2011-10-14 Thread Kytömaa Lauri
>'established' is a big word. I'm surprised by the taginfo stats. I
>never used this tag myself and I don't remember if it was really
>discussed in the international lists. It is in the wiki since July.

Taginfo won't show the combinations at the moment, but location=*
is, afaik, used on ways with man_made=pipeline and nodes tagged
amenity/emergency=fire_hydrant. The pipeline tagging proposal
suggested it first on 6 December 2007(*) and the proposal vote
ended on 31 December 2007. The "proper" mention has been
on Tag:man_made=pipeline from the day that page was created,
on 17 May 2009.

*) 
http://wiki.openstreetmap.org/w/index.php?title=Approved_features/Tag:man_made%3Dpipeline&oldid=62974

-- 
Alv
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Re: [Tagging] Key "location" (was "Feature Proposal - Voting - entrance=*")

2011-10-14 Thread Pieren
2011/10/14 Kytömaa Lauri :
> Taginfo won't show the combinations at the moment, but location=*
> is, afaik, used on ways with man_made=pipeline and nodes tagged
> amenity/emergency=fire_hydrant.

Yes but the proposal is now to extend its usage to everything under
ground. To be honest, I'm not aware about pipelines and fire hydants
tagging but I'm concerned if I discover a tag "location=*" in many OSM
objects like buildings, shops or e.g. telephones just because they are
underground.

Pieren

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Re: [Tagging] Key "location" (was "Feature Proposal - Voting - entrance=*")

2011-10-14 Thread John Sturdy
On Fri, Oct 14, 2011 at 3:53 PM, Pieren  wrote:
> 2011/10/14 Kytömaa Lauri :
>> Taginfo won't show the combinations at the moment, but location=*
>> is, afaik, used on ways with man_made=pipeline and nodes tagged
>> amenity/emergency=fire_hydrant.
>
> Yes but the proposal is now to extend its usage to everything under
> ground. To be honest, I'm not aware about pipelines and fire hydants
> tagging but I'm concerned if I discover a tag "location=*" in many OSM
> objects like buildings, shops or e.g. telephones just because they are
> underground.

I don't think the word "location" is very good, but then it wouldn't
be the only tag key in use that seems a bit clumsy; I guess tagging is
just far enough away from normal use of natural language words that
we'll have to put up with that.  (I would have chosen the word "level"
for this use, and that is not documented as being used, but is it
worth trying to change to use it?)

I think it makes sense to have one tag that indicates that something
is underground, for any type of thing.  That means that software (e.g.
renderers) can do a simple test for it, and that mappers only need to
know one tag for it.  And I prefer "location=underground" over
"underground=yes" because we could also use "location=overground", and
thus still only have to do one check in software to know that
something's not at ground level.

__John

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Re: [Tagging] Key "location" (was "Feature Proposal - Voting - entrance=*")

2011-10-17 Thread Martin Koppenhoefer
2011/10/14 John Sturdy :
> I don't think the word "location" is very good, but then it wouldn't
> be the only tag key in use that seems a bit clumsy; I guess tagging is
> just far enough away from normal use of natural language words that
> we'll have to put up with that.


+1


> (I would have chosen the word "level"
> for this use, and that is not documented as being used, but is it
> worth trying to change to use it?)


well level is documented in the wiki since 2009
http://wiki.openstreetmap.org/wiki/Key:level and has already 18000
occurances in the db
http://taginfo.openstreetmap.org/keys/level#values


> I think it makes sense to have one tag that indicates that something
> is underground, for any type of thing.  That means that software (e.g.
> renderers) can do a simple test for it, and that mappers only need to
> know one tag for it.  And I prefer "location=underground" over
> "underground=yes" because we could also use "location=overground", and
> thus still only have to do one check in software to know that
> something's not at ground level.


what does "underground" exactly mean? What is the definition for
"ground"-level in the case of a highly modified urban context? Is
"earth/soil" required, or can ground also be completely artificial?

cheers,
Martin

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