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

2011-01-27 Thread Andrew Harvey
I've been using natural=rocks, but I'm happy to change this if
something is agreed upon.

Is a distinction made between areas which are basically one really
large rock stuck to the ground, and areas where there are lots of body
to head sized rocks (without knowing what is underneath)? Also some
areas would likely be a combination of the two.

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

2011-01-27 Thread Johan Jönsson
Andrew Harvey andrew.harvey4@... writes:
 Is a distinction made between areas which are basically one really
 large rock stuck to the ground, and areas where there are lots of body
 to head sized rocks (without knowing what is underneath)? Also some
 areas would likely be a combination of the two.
 
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.

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





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

2011-01-27 Thread M∡rtin Koppenhoefer
2011/1/27 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.


there is already the well established feature for loose rocks (natural=scree)

cheers,
Martin

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

2011-01-27 Thread Stephen Hope
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.


Stephen

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