Re: [Tagging] cleanup of the key natural

2014-10-21 Thread Martin Koppenhoefer
2014-10-20 19:13 GMT+02:00 Friedrich Volkmann b...@volki.at:


 Most known caves are dry. I know because I have been in thousands of them.



being dry doesn't mean they are not water-related. beaches also often are
dry.




   please don't take wikipedia as
 your one and only reference.



I don't, but it is the easiest to quote.

cheers,
Martin
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Re: [Tagging] cleanup of the key natural

2014-10-20 Thread Martin Koppenhoefer
2014-10-17 19:25 GMT+02:00 Friedrich Volkmann b...@volki.at:

 A cave is a hollow mould, thus a landform (or a georelief element, or
 whatever).
 I own several books on geomorphology, and each of them has a chapter on
 caves.

  If we did what you propose it would still be arbitrarily divided as there
  would be landforms in vegetation related and landforms in water
 related.

 Well, you may consider a bay a landform, but without doubt it's
 water-related in the first place.



I propose to put beach in landforms and cave in water-related. Also
coastline could go into landforms. And moor into landforms. And mud in
water-related. What about putting fell into landforms? ...



 When you do a classification, you put
 every element where it fits best. It's just to get some structure in a long
 list.



yes, that's the point. Our classification system is tags, and this is about
the natural class. Putting the values of natural into arbitrary
subclasses doesn't help anybody. IMHO.

cheers,
Martin
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Re: [Tagging] cleanup of the key natural

2014-10-20 Thread Friedrich Volkmann
On 20.10.2014 17:45, Martin Koppenhoefer wrote:
 I propose to put beach in landforms and cave in water-related. Also
 coastline could go into landforms. And moor into landforms. And mud in
 water-related. What about putting fell into landforms? ...

Most known caves are dry. I know because I have been in thousands of them.

As I already told you, I am unsure what's the correct generic term for full
forms, hollow moulds and flat forms. If you don't like landform, you are
invited to come up with an alternative. But please don't take wikipedia as
your one and only reference.

 Our classification system is tags, and this is about
 the natural class. Putting the values of natural into arbitrary subclasses
 doesn't help anybody. IMHO.

Well, that may be your opinion, but when you look at
http://wiki.openstreetmap.org/wiki/Map_features you'll find that quite a lot
of keys have subclasses defined, particularly when the keys have a large
number of values. I already mentioned shop=* as an example.

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Adr.: Davidgasse 76-80/14/10, 1100 Wien, Austria

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Re: [Tagging] cleanup of the key natural

2014-10-17 Thread Martin Koppenhoefer
2014-10-07 15:56 GMT+02:00 Brad Neuhauser brad.neuhau...@gmail.com:

 Hi Martin, regarding the wiki page, I'm assuming you're talking about
 Frankthetankk's edits? I'm not seeing what the issue is. Could you clarify
 what change you see as disputable?



sorry for taking that long to respond, I've been on vacation with reduced
internet access ;-)
I think the classification system that was introduced is arbitrary and has
some issues.

Some examples:
vegetation related contains at least the following objects that don't fit
IMHO. Of course you can relate everything to vegetation (either there
will be some kind, or there won't) but that doesn't make this automatically
a logical class.

- fell (bad tag anyway, word has different meanings and seems to be used
only in a limited regional context in the way that it is defined, the
description requires principally covered with grass but the main
qualifier seems to be that it is a high lying landscape).
- moor - is characterized by the humidity and acidic soils and the
elevation level, not the vegetation
- heath (is about certain soils)
- mud (this is about the grain size of minerals and the amount of moisture)
- sand (this is about the grain size of minerals)
- stone (this is about freestanding stones! Really nothing to do with
vegetation)
- wetland (is about the amount of water in the ground)


water related and mountains related: completely arbitrary, you'll find
water in the mountains, springs in the mountains, vegetation in the
mountains, vegetation in and near the water, etc.

mountains related
- a cave doesn't have to be in the mountains
- a cliff doesn't have to be in the mountains
- a glacier is water related and temperature related, but it doesn't
require mountains
- a rock can't only be found in the mountains
- a volcano isn't mountain related (always)

I think the inconsistencies are so significant that there is no point in
trying to correct these, and there is no advantage in having this
arbitrary structure instead of a long list.

cheers,
Martin
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Re: [Tagging] cleanup of the key natural

2014-10-17 Thread Friedrich Volkmann
On 17.10.2014 15:11, Martin Koppenhoefer wrote:
 mountains related
 - a cave doesn't have to be in the mountains
 - a cliff doesn't have to be in the mountains
 - a glacier is water related and temperature related, but it doesn't
 require mountains
 - a rock can't only be found in the mountains
 - a volcano isn't mountain related (always)

Let's rename mountain related to landforms and move glacier to water
related, and everything is fine.

-- 
Friedrich K. Volkmann   http://www.volki.at/
Adr.: Davidgasse 76-80/14/10, 1100 Wien, Austria

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Re: [Tagging] cleanup of the key natural

2014-10-17 Thread Friedrich Volkmann
On 17.10.2014 15:49, Friedrich Volkmann wrote:
 On 17.10.2014 15:11, Martin Koppenhoefer wrote:
 mountains related
 - a cave doesn't have to be in the mountains
 - a cliff doesn't have to be in the mountains
 - a glacier is water related and temperature related, but it doesn't
 require mountains
 - a rock can't only be found in the mountains
 - a volcano isn't mountain related (always)
 
 Let's rename mountain related to landforms and move glacier to water
 related, and everything is fine.

I was eager to do that, so I just did it, plus some more reordering. Please
review.

-- 
Friedrich K. Volkmann   http://www.volki.at/
Adr.: Davidgasse 76-80/14/10, 1100 Wien, Austria

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Re: [Tagging] cleanup of the key natural

2014-10-17 Thread Martin Koppenhoefer
2014-10-17 15:49 GMT+02:00 Friedrich Volkmann b...@volki.at:

 Let's rename mountain related to landforms and move glacier to water
 related, and everything is fine.


a cave entrance isn't a landform. The issues with vegetation related
would persist. Wikipedia says about landforms: A *landform* is a
geomorphological http://en.wikipedia.org/wiki/Geomorphology unit, and is
largely defined by its surface form and location in the landscape. As part
of the terrain http://en.wikipedia.org/wiki/Terrain, a landform is an
element of topography http://en.wikipedia.org/wiki/Topography. Landform
elements also include land http://en.wikipedia.org/wiki/Land such as hills
http://en.wikipedia.org/wiki/Hill, mountains
http://en.wikipedia.org/wiki/Mountain, plateaus
http://en.wikipedia.org/wiki/Plateau, canyons
http://en.wikipedia.org/wiki/Canyon, valleys
http://en.wikipedia.org/wiki/Valley, seascape
http://en.wikipedia.org/wiki/Seascape and oceanic waterbody
http://en.wikipedia.org/wiki/Waterbody interface features such as bays
http://en.wikipedia.org/wiki/Bay, peninsulas
http://en.wikipedia.org/wiki/Peninsula, seas
http://en.wikipedia.org/wiki/Sea and so forth.

If we did what you propose it would still be arbitrarily divided as there
would be landforms in vegetation related and landforms in water
related.

cheers,
Martin
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Re: [Tagging] cleanup of the key natural

2014-10-17 Thread Friedrich Volkmann
On 17.10.2014 16:29, Martin Koppenhoefer wrote:
 a cave entrance isn't a landform.

There are several similar terms, like georelief elements. I don't know
which one fits best. Anyway, these consist of one or more of:
full forms
hollow moulds
flat forms

A cave is a hollow mould, thus a landform (or a georelief element, or whatever).
I own several books on geomorphology, and each of them has a chapter on caves.

 If we did what you propose it would still be arbitrarily divided as there
 would be landforms in vegetation related and landforms in water related.

Well, you may consider a bay a landform, but without doubt it's
water-related in the first place. When you do a classification, you put
every element where it fits best. It's just to get some structure in a long
list.

Have a look at the key:shop template. You could place supermarket in the
food, beverages section, but it's in the general store, department store,
mall section. Likewise you could put bathroom_furnishing and houseware
in the furniture and interior section, variety_store in the general
store, department store, mall section, and so on.

-- 
Friedrich K. Volkmann   http://www.volki.at/
Adr.: Davidgasse 76-80/14/10, 1100 Wien, Austria

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Re: [Tagging] cleanup of the key natural

2014-10-09 Thread Martin Koppenhoefer




 Il giorno 07/ott/2014, alle ore 19:40, Dan S danstowell+...@gmail.com ha 
 scritto:
 
 For example it's not clear to me whether you would
 accept natural=tree (see my first point), but since there are more
 than 4 million of them, I think you are going to have to accept them.



I'm in a hurry  now, just a remark: natural=tree should be kept, it does fit 
logically into the scheme, it says: one tree. Like a spring, a bay, a wetland, 
a rock etc
mud doesn't fit, for natural that would be wetland (with appropriate subtags). 
The same for sand, this would be beach or desert or wasteland or ...

sand or mud aren't geographical features in my understanding, they are 
orthogonal and hence are creating conflicts (because you could either tag beach 
or sand etc)

What might be disputed is water. In my reading something like lake  or pond 
would fit better, but this can be done with subtagging as well, like it is 
already proposed so I wouldn't change water for historical reasons 

cheers,
Martin
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[Tagging] cleanup of the key natural

2014-10-07 Thread Martin Koppenhoefer
According to the wiki, the natural key is currently a mixture of different
aspects of something. The wiki states that it covers a selection of
geological and landcover features.

My suggestion is to keep only geological/geographical features in natural
(all three, point features like peak and spring as well as linear features
like natural=cliff or coastline and areas like
natural=fell/wetland/beach/heath/bay/scrub/...) and to move the landcover
features (those describing material rather than features, e.g. mud and
sand) to a different key (my suggestion is landcover but there are also
mappers advocating surface).

A more coherent scheme would have a lot of advantages (easier to learn and
understand because of more inherent logics, easier to maintain and extend
and would allow to elaborate on different aspects for the same area object
(i.e. will lead to more detailed data in the end)).

---

Additionally I have spotted that recently a user has decided to group the
features according to his interpretation:
http://wiki.openstreetmap.org/w/index.php?title=Template:Map_Features:naturalaction=history

I believe that this new grouping is disputable and propose to revert this
change.
---


Please comment.

cheers,
Martin
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Re: [Tagging] cleanup of the key natural

2014-10-07 Thread Brad Neuhauser
Hi Martin, regarding the wiki page, I'm assuming you're talking about
Frankthetankk's edits? I'm not seeing what the issue is. Could you clarify
what change you see as disputable? Thanks, Brad

On Tue, Oct 7, 2014 at 8:42 AM, Martin Koppenhoefer dieterdre...@gmail.com
wrote:

 snip

 Additionally I have spotted that recently a user has decided to group the
 features according to his interpretation:

 http://wiki.openstreetmap.org/w/index.php?title=Template:Map_Features:naturalaction=history

 I believe that this new grouping is disputable and propose to revert this
 change.
 ---


 Please comment.

 cheers,
 Martin

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Re: [Tagging] cleanup of the key natural

2014-10-07 Thread Malcolm Herring
+1 if it means that the rendering of these features is done according to 
whatever is agreed. I have a particular interest in coastal and tidal 
riverbank areas. I had tagged some such areas some years ago according 
to the Wiki and the rendering was as expected. Since the introduction of 
Carto, the rendering rules between coastal and riverbank 
wetland/tidalflat sand/mud changed, causing abrupt changes in estuaries, 
where sea becomes river at some arbitrary point. Now recently, the zoom 
rules between mud and sand/beach have diverged.


In summary, I would like to see a set of tagging rules that produce 
predictable  consistent renderings in the map. I am agnostic as to 
exactly what these tags should be  will gladly change my mapping to the 
new scheme.


I will leave it to others to argue at length over what the tags should be!


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Re: [Tagging] cleanup of the key natural

2014-10-07 Thread Mateusz Konieczny
Now recently, the zoom rules between mud and sand/beach have diverged. -
I consider this as a bug and
I plan on fixing it in the near future (see
https://github.com/gravitystorm/openstreetmap-carto/issues/1018 ).

2014-10-07 16:49 GMT+02:00 Malcolm Herring malcolm.herr...@btinternet.com:

 +1 if it means that the rendering of these features is done according to
 whatever is agreed. I have a particular interest in coastal and tidal
 riverbank areas. I had tagged some such areas some years ago according to
 the Wiki and the rendering was as expected. Since the introduction of
 Carto, the rendering rules between coastal and riverbank wetland/tidalflat
 sand/mud changed, causing abrupt changes in estuaries, where sea becomes
 river at some arbitrary point. Now recently, the zoom rules between mud and
 sand/beach have diverged.

 In summary, I would like to see a set of tagging rules that produce
 predictable  consistent renderings in the map. I am agnostic as to exactly
 what these tags should be  will gladly change my mapping to the new scheme.

 I will leave it to others to argue at length over what the tags should be!



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Re: [Tagging] cleanup of the key natural

2014-10-07 Thread Dan S
Hi Martin,

OK, well since you requested comments: Firstly, I find it difficult to
understand what makes your proposed split more coherent or easy to
learn than thewiki- grouping that you propose to revert! By the way
please don't start a revert battle without first talking to that
editor.

Secondly, these tags are used so widely that I think you may have
missed your chance. For example it's not clear to me whether you would
accept natural=tree (see my first point), but since there are more
than 4 million of them, I think you are going to have to accept them.

If you want to make a change to the tagging of a massive number of
objects, you're going to need a _really_ persuasive argument. Not to
persuade me, but to persuade the crowd...

Just my 2p

Best
Dan


2014-10-07 14:42 GMT+01:00 Martin Koppenhoefer dieterdre...@gmail.com:
 According to the wiki, the natural key is currently a mixture of different
 aspects of something. The wiki states that it covers a selection of
 geological and landcover features.

 My suggestion is to keep only geological/geographical features in natural
 (all three, point features like peak and spring as well as linear features
 like natural=cliff or coastline and areas like
 natural=fell/wetland/beach/heath/bay/scrub/...) and to move the landcover
 features (those describing material rather than features, e.g. mud and
 sand) to a different key (my suggestion is landcover but there are also
 mappers advocating surface).

 A more coherent scheme would have a lot of advantages (easier to learn and
 understand because of more inherent logics, easier to maintain and extend
 and would allow to elaborate on different aspects for the same area object
 (i.e. will lead to more detailed data in the end)).

 ---

 Additionally I have spotted that recently a user has decided to group the
 features according to his interpretation:
 http://wiki.openstreetmap.org/w/index.php?title=Template:Map_Features:naturalaction=history

 I believe that this new grouping is disputable and propose to revert this
 change.
 ---


 Please comment.

 cheers,
 Martin

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