[Tagging] The value of the list (was Observations of the use of the diet: tag)

2013-07-03 Thread Serge Wroclawski
On Wed, Jul 3, 2013 at 6:25 AM, Pieren pier...@gmail.com wrote:
 On Wed, Jul 3, 2013 at 5:14 AM, Serge Wroclawski emac...@gmail.com wrote:

 My experience with mapping has been that after talking on the tagging
 list, and being voted down, when I just went ahead and used my tags,
 they were adopted by the community, on more than one occassion.

 Yeah, you can just ignore the feedbacks. Then we end up with the mess
 of tags like power=substation or shop=bakery or designation=* which
 are completely misinterpreted in different countries. Then it takes
 years until we can clarify the situation (if it will happen ever),
 thanks for the guys ignoring the talks or votes (which are more
 opinion polls)...

OSM data is a key/value store. What people decide to put in those
key/value pairs is up to them.

What I've found, over years of participating, is that:

1. This list is a small subset of OSMers. It doesn't represent many of
the supermappers, and it doesn't include editor authors or renderer
people either.

In other words, it's a small, self-selected group of people who are
spending a lot of time talking, or arguing, in an echo chamber.

2. This list's idea of good tags differs from the OSM community at large.

Most OSMers dislike complex schemes, and will avoid relations when
they can. But relations are quite common here. The same goes for colon
tags, which are heavily proposed (such as in the diet proposal) but
not often used by the public except in very limited circumstances
(addr).

3. This list often ignores usage

If two proposals are up for discussion, there seems to be little or no
weight placed on existing usage vs this list's idea of correctness.


There is value in having a place to discuss issues of a tagging
question, or problem, but I fear that this list isn't it.

If people on this list wanted to do more community work that wasn't
mapping, there would be tremendous value in going in to the wiki,
finding the tags that are in use but not documented well, and
expanding, or translating those pages.

That would be a useful exercise, and I would participate. But right
now, my view, and my advice to others, is generally to go out and
map.[1]

- Serge

[1] This is my advice to individuals doing individual mapping via
manual survey. As it relates to imports or automated edits, I have
very different views.

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Re: [Tagging] The value of the list (was Observations of the use of the diet: tag)

2013-07-03 Thread Martin Koppenhoefer
2013/7/3 Serge Wroclawski emac...@gmail.com

 OSM data is a key/value store. What people decide to put in those
 key/value pairs is up to them.



yes, up to the point that they are using duplicate values for well
established keys. As we can only put one value for a key, the well
established one should be used when it comes to tagging something for what
there is already a convention.



 What I've found, over years of participating, is that:

 1. This list is a small subset of OSMers. It doesn't represent many of
 the supermappers, and it doesn't include editor authors or renderer
 people either.

 In other words, it's a small, self-selected group of people who are
 spending a lot of time talking, or arguing, in an echo chamber.



every one is invited to take part in tagging discussions. If you decide not
to do so, you shouldn't complain afterwards that your ideas aren't
integrated.



 2. This list's idea of good tags differs from the OSM community at large.



don't agree.


Most OSMers dislike complex schemes, and will avoid relations when
 they can. But relations are quite common here.



actually my experience is that relations aren't very common here. Most
mappers have understood that something that can be expressed without a
relation should be done so.



 The same goes for colon
 tags, which are heavily proposed (such as in the diet proposal) but
 not often used by the public except in very limited circumstances
 (addr).



colon tags have the advantage of creating kind of a namespace that helps
distinguishing and avoiding misinterpretations and the disadvantage that
you have to type more text (not a real problem with autocompletion, but
yes, it is a disadvantage).



 3. This list often ignores usage

 If two proposals are up for discussion, there seems to be little or no
 weight placed on existing usage vs this list's idea of correctness.



Personally I don't share this observation (I think usage numbers play a
role in the discussions here), but you'll also have to see usage numbers
in the context of how many of these features potentially exist in the real
world, and how many are already mapped. If there a 2 tags for the exact
same thing and one is used 1 times, the other 23 times, it seems clear
(as long as there aren't serious problems with these 1 tags), but when
one tag is used 120 times and the other 40 times (for a feature that occurs
often) it is a good idea to look at the semantics and implications of
both ways of doing it, without giving too much importance to the actual
(small) use numbers. Another problem with usage numbers is, that one single
import can distort heavily the statistics, so looking at how many different
people have used a tag also makes sense.



 There is value in having a place to discuss issues of a tagging
 question, or problem, but I fear that this list isn't it.



do you know a good alternative? In my experience tags are often developed
on a national level (on national mailing lists) and when there is some
agreement the proposal will be pushed to [tagging] to get comments from the
international community.



 If people on this list wanted to do more community work that wasn't
 mapping, there would be tremendous value in going in to the wiki,
 finding the tags that are in use but not documented well, and
 expanding, or translating those pages.



how could they do the expansion? How would they know what definition a
mapper had in mind when using a specific tag that is not or not
sufficiently documented? How could they even know what is a sufficient
definition? OK for translations, but unilateral amendments?


cheers,
Martin
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Re: [Tagging] The value of the list (was Observations of the use of the diet: tag)

2013-07-03 Thread Pieren
On Wed, Jul 3, 2013 at 1:56 PM, Serge Wroclawski emac...@gmail.com wrote:

 1. This list is a small subset of OSMers. It doesn't represent many of
 the supermappers, and it doesn't include editor authors or renderer
 people either.

True. But you forget one important point : most of the contributors
simply don't care about creating, defining, documenting new tags. If
it's not in the editor presets or the huge map features wiki page,
they don't tag or just write their blabla=wow special tag and they
don't care if it will be recognized later or not.
And today, this list is mostly

 2. This list's idea of good tags differs from the OSM community at large.
 But relations are quite common here.

Not true. Go back in archives or votes and you will see plenty of
messages against unnecessary complexity (incl. relations).

 The same goes for colon
 tags, which are heavily proposed (such as in the diet proposal) but
 not often used by the public except in very limited circumstances
 (addr).

The semi-colon multiple values is an old practice (or
recommandation) in OSM. It seemed to be a good idea and practical for
contributors in the past but today, with our experience, it's not the
case for data consumers neither in editors.

 3. This list often ignores usage

Again, most of the map features tags are today well defined and
documented. Now we come to a point where discussions are about
non-geographic features like diet or specialized features like power
voltage, type of beers or amount of bridge pillars. Such discussions
are also implying a very small subset of the community.
Anout tags usage. check the list of designation values and you will
see that eventhough it's widely used, it can be massively incorretly
used.

 That would be a useful exercise, and I would participate. But right
 now, my view, and my advice to others, is generally to go out and
 map.[1]

But this list is about finding consensus about controversial or new
tags and put the result on the wiki. The vote is a good point in
this way that we call feedbacks from a wider audience (only wiki
users, local lists). If you find that this list is not reflecting the
real community, then call for more players. List is open and no one
will complain.

Pieren

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