Re: [Tagging] Feature Proposal - RFC - natural=bare_rock

2011-01-28 Thread Andrew Harvey
2011/1/28 Johan Jönsson joha...@goteborg.cc:
 My opinion is that natural=bare_rock should be used for solid rock and not for
 fields of stone/stony ground. The visible bedrock, even if it could be
 splintered and jagged.

Okay, so this natural=bare_rock RFC should be used where there is one
very large stone/rock surface in the ground, even when jagged, and not
for loose rocks.

I support this proposal then.

 The first proposal intended to span all kinds of stone surfaces, I changed 
 that.
 I took a look at [[IOFmapping#Rock_and_boulders]] and got convinced to 
 separate
 the solid bare_rock.
 In the discussion it was argued that natural=scree could be used for rough 
 stony
 grounds, that maybe not the case as scree have a limited definition meaning a
 certain mountain slope filled with rubble, 
 [[http://en.wikipedia.org/wiki/Scree
 Scree on wikipedia]].

 There is a definition on
 [http://etc-lusi.eionet.europa.eu/CLC2000/classes/Pictures?CLCcategory=3/3.3/3.3.2CLCtitle=Bare%20rocks
 European Topic Centre on Land Use and Spatial Information] that is like the
 first proposal, encompassing all kinds of areas with visible rock.

 /Johan Jönsson

I also think it makes sense to separate the solid bare_rock.


On Fri, Jan 28, 2011 at 9:02 AM, Stephen Hope slh...@gmail.com wrote:
 On 28 January 2011 07:43,  j...@jfeldredge.com wrote:
 Scree, however, usually refers to a sloping pile of loose rock at the base 
 of a cliff, rather than being a general term for loose rocks.

 It's a little bit more general than that - a sloping hillside covered
 with loose rock is also scree.  But loose rock on flat ground never
 is.  I used to climb up scree slopes a lot when I was a kid.

Sorry for diverting the thread if this is getting too off topic, feel
free to reply using a different subject-- I saw scree on the wiki,
your explanation helps. The kind of rocks I'm thinking about are on
the coastline, not on a slope, and are not really at the base of a
cliff. They are mostly stable rocks, but usually enough to walk on if
you are careful, but can move. What tag should I use for this? I think
it is different to scree. Thanks.

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Re: [Tagging] Feature Proposal - RFC - natural=bare_rock

2011-01-28 Thread M∡rtin Koppenhoefer
2011/1/27 Stephen Hope slh...@gmail.com:
 On 28 January 2011 07:43,  j...@jfeldredge.com wrote:
 Scree, however, usually refers to a sloping pile of loose rock at the base 
 of a cliff, rather than being a general term for loose rocks.

 It's a little bit more general than that - a sloping hillside covered
 with loose rock is also scree.  But loose rock on flat ground never
 is.  I used to climb up scree slopes a lot when I was a kid.


OK, so IMHO this would be right to remain in natural: it is more about
the geographical situation then about the material (or better: it is
not only about the material, but it is a type of landscape-feature).
Opposed to this, loose_rock would be a landcover-feature (and
probably implied by scree).

Cheers,
Martin

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Re: [Tagging] Feature Proposal - RFC - natural=bare_rock

2011-01-28 Thread M∡rtin Koppenhoefer
2011/1/28 Andrew Harvey andrew.harv...@gmail.com:
 Sorry for diverting the thread if this is getting too off topic, feel
 free to reply using a different subject-- I saw scree on the wiki,
 your explanation helps. The kind of rocks I'm thinking about are on
 the coastline, not on a slope, and are not really at the base of a
 cliff. They are mostly stable rocks, but usually enough to walk on if
 you are careful, but can move. What tag should I use for this? I think
 it is different to scree. Thanks.


Yes, IMHO (I'm not an English native) this is not scree. I would tag them
landcover=bare_rock (or depending on the size landcover=pebbles)
http://en.wikipedia.org/wiki/File:Wave_Retreating_from_Pebbles.jpg

cheers,
Martin

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Re: [Tagging] Feature Proposal - RFC - natural=bare_rock

2011-01-28 Thread John Smith
On 28 January 2011 21:35, M∡rtin Koppenhoefer dieterdre...@gmail.com wrote:
 Yes, IMHO (I'm not an English native) this is not scree. I would tag them
 landcover=bare_rock (or depending on the size landcover=pebbles)
 http://en.wikipedia.org/wiki/File:Wave_Retreating_from_Pebbles.jpg

Why bother with landcover=* when we have natural=* and surface=* already?

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