Re: [Tagging] Proposal - RFC - man_made=lamp

2013-11-05 Thread Martin Koppenhoefer


 Am 05/nov/2013 um 08:32 schrieb Manuel Hohmann 
 mhohm...@physnet.uni-hamburg.de:
 
 Yes, indeed I was thinking about this (or rather light_fitting, which
 should be UK English), which would be the correct technical term. I
 finally used lamp for the following reasons:


If I see this right, lamp technically seems to refer to the light emitting, 
usually changeable, component described here: 
http://en.m.wikipedia.org/wiki/Lamp_(electrical_component)

(just the same as the German Lampe, which colloquially is also sometimes used 
for Leuchte, but actually shouldn't). I'd prefer to stick to correct 
terminology in order to avoid confusion (e.g. lamp:colour, it should be clear 
if this refers to the lamp or the fixture)

cheers,
Martin
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Re: [Tagging] Proposal - RFC - man_made=lamp

2013-11-04 Thread Martin Koppenhöfer


Am 03.11.2013 um 14:52 schrieb Manuel Hohmann mhohm...@physnet.uni-hamburg.de:

 I propose the tag man_made=lamp for lamps, together with a number of
 additional tags for lamp type, light source, power and so on. Central
 motivations for this proposal are:


Wouldn't it make more sense use the tag light_fixture (de Leuchte)? 

Cheers,
Martin
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Re: [Tagging] Proposal - RFC - man_made=lamp

2013-11-04 Thread Manuel Hohmann
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 Wouldn't it make more sense use the tag light_fixture (de
 Leuchte)?

Let me refer to http://en.wikipedia.org/wiki/Light_fixture here.

Yes, indeed I was thinking about this (or rather light_fitting, which
should be UK English), which would be the correct technical term. I
finally used lamp for the following reasons:

- - The term lamp is in colloquial use for a light fixture (see
http://en.wikipedia.org/wiki/Lamp) and used more often than the
technical term.

- - The term lamp appears in combinations such as street lamp (also
called street light), signal lamp, and so on.

- - Many of the sub-tags lamp:* actually refer to properties (colour,
power...) of the lamp.

Maybe a native speaker could comment on this, in particular on the
first item and common usage of these terms.

One could also think about light instead of lamp, as in street
light, flood light... But I fear a confusion with traffic lights,
which should not be affected by this.

Best,
Manuel

PS: Unfortunately I'll be leaving for a several week business trip
today and I don't know when I'll be able to do and OSM related stuff
after this. So if anyone would like to adopt the proposal from me,
please let me know. Otherwise, and if there is no urgent veto
against it, I would open voting, and I'll be back when the voting
period is over.
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[Tagging] Proposal - RFC - man_made=lamp

2013-11-03 Thread Manuel Hohmann
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Dear all,

I propose the tag man_made=lamp for lamps, together with a number of
additional tags for lamp type, light source, power and so on. Central
motivations for this proposal are:

- - Lamps are clearly visible landmarks for orientation, mainly at night.
- - Mapping lamps gives a detailed image of the lighting situation.

The present tagging does not suffice for this:

- - highway=street_lamp does not apply to any other lamp type.
- - Tagging lamps as highway features is at least questionable.
- - There is no tag for other types of lamps.
- - There are no tags for lamp properties, such as light source and power.

You can find the full proposal for a unified lamp tagging here:

https://wiki.openstreetmap.org/wiki/Proposed_features/lamp

This tagging has evolved from a thorough discussion in the German OSM
forum:

http://forum.openstreetmap.org/viewtopic.php?id=23041

In the forum it has also been suggested to start voting soon, since
mapping lamps is done most easily during the dark time of the year,
which is just starting (in the northern hemisphere, where most mappers
are located). Voting will therefore be opened soon, unless there are
further suggestions / improvement / discussions required.

Best,
Manuel
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Re: [Tagging] Proposal - RFC - man_made=lamp

2013-11-03 Thread Frederik Ramm
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Hi,

On 03.11.2013 14:52, Manuel Hohmann wrote:
 - There are no tags for lamp properties, such as light source and
 power.

lamp_type has 20,000 uses and lamp_mount has 17,000; this proposal
tries to replace them both?

 You can find the full proposal for a unified lamp tagging here:

Frankly, this sounds like typical astronaut tagging. A group of people
got together and thought: Now what could we *possibly* want to tag
about a lamp? and everything has been written down.

Next thing, a helpful soul will create a JOSM template that has
*every* *single* *one* of the 20 tags in that proposal, and gives
people the impression that they should really know the aperture angle
or else the tagging isn't good.

I recommend to shorten the proposal to two or three tags and let
people map a couple thousand lamps first, then see where the journey goes.

Therein lies the quality of a proposal - to capture the essential
bits, not to make endless lists of detailed stuff that could possibly
be mapped.

Creating a full blown feature catalog before the first lamp aperture
has ever been mapped hasn't been our style in the past.

Bye
Frederik

- -- 
Frederik Ramm  ##  eMail frede...@remote.org  ##  N49°00'09 E008°23'33
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Re: [Tagging] Proposal - RFC - man_made=lamp

2013-11-03 Thread Frederik Ramm
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Hi,

On 03.11.2013 14:52, Manuel Hohmann wrote:
 In the forum it has also been suggested to start voting soon,
 since mapping lamps is done most easily during the dark time of the
 year,

There is no link. Anyone can map lamps whether or not the voting has
been started. Even if the proposal is rejected, people can still map
lamps.

Bye
Frederik

- -- 
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Re: [Tagging] Proposal - RFC - man_made=lamp

2013-11-03 Thread Andy Townsend


On 03/11/13 13:52, Manuel Hohmann wrote:

You can find the full proposal for a unified lamp tagging here:

https://wiki.openstreetmap.org/wiki/Proposed_features/lamp

This tagging has evolved from a thorough discussion in the German OSM
forum:

http://forum.openstreetmap.org/viewtopic.php?id=23041




I had a quick scan through those, but it's not immediately clear to me 
what problem you're trying to solve.  What nature of illuminated things 
are OSM mappers failing to capture in the absence of a lamp proposal?


Cheers,

Andy


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Re: [Tagging] Proposal - RFC - man_made=lamp

2013-11-03 Thread Manuel Hohmann
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 lamp_type has 20,000 uses and lamp_mount has 17,000; this proposal 
 tries to replace them both?

Yes.

 Frankly, this sounds like typical astronaut tagging. A group of
 people got together and thought: Now what could we *possibly* want
 to tag about a lamp? and everything has been written down.

Basically that's the plan.

 Next thing, a helpful soul will create a JOSM template that has 
 *every* *single* *one* of the 20 tags in that proposal, and gives 
 people the impression that they should really know the aperture
 angle or else the tagging isn't good.

The first part is true, the second is wrong. It is written in the
proposal that these additional tags are optional and should be added
only if known. This will also be emphasized in the JOSM template.
Nobody is forced to enter any of this information. This is just the
same as with parking lots, highways and so on - also there the JOSM
templates contain lots of tags such as surface, width, maxheight,
maxspeed and a plethora of access tags. Yet it works.

 I recommend to shorten the proposal to two or three tags and let 
 people map a couple thousand lamps first, then see where the
 journey goes.

As you wrote above, we already have thousands of lamps with 2-3 tags.

 Therein lies the quality of a proposal - to capture the essential 
 bits, not to make endless lists of detailed stuff that could
 possibly be mapped.

Of course, essential and non-essential things should be distinguished,
I don't doubt that. I'll try to make this distinction more apparent in
the proposal, which goes beyond the essential (and yet done) there is
a lamp tagging.

 Creating a full blown feature catalog before the first lamp
 aperture has ever been mapped hasn't been our style in the past.

Indeed it has been the past style that everybody starts mapping
something and invents new tags, and when there is a number of
conflicting taggings, it needs to be cleaned up. This is exactly the
reason why I suggest tags for these things, before everybody comes up
with their own tags and we get the same mess again.

 There is no link. Anyone can map lamps whether or not the voting
 has been started. Even if the proposal is rejected, people can
 still map lamps.

If there is no agreed way to map something, people will either invent
their own tagging or not map something at all. Of course I could just
start mapping lamps, powers, colours and apertures right away, but if
nobody else agrees with this, it does not make much sense.

 I had a quick scan through those, but it's not immediately clear
 to me what problem you're trying to solve.  What nature of
 illuminated things are OSM mappers failing to capture in the
 absence of a lamp proposal?

Have a look at the examples / pictures in the proposal which are not
street lamps.

Manuel
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