I'm attempting to trace some of the Gower coastline from the (very fuzzy)
Yahoo images. But I'm not sure how to tag beaches made up of flat rock.
For example, the type of thing shown by this Google aerial view:
On Monday 14 April 2008 13:46:34 Steve Hill wrote:
I'm attempting to trace some of the Gower coastline from the (very fuzzy)
Yahoo images. But I'm not sure how to tag beaches made up of flat rock.
For example, the type of thing shown by this Google aerial view:
natural=scree perhaps?
http://wiki.openstreetmap.org/index.php/Key:natural
http://en.wikipedia.org/wiki/Scree
Stefan
On Mon, Apr 14, 2008 at 2:46 PM, Steve Hill [EMAIL PROTECTED] wrote:
I'm attempting to trace some of the Gower coastline from the (very fuzzy)
Yahoo images. But I'm not
On Mon, 14 Apr 2008, Stefan Baebler wrote:
natural=scree perhaps?
Scree refers to steep slopes covered with loose stones - this is
(very uneven) horizontal solid rock.
- Steve
xmpp:[EMAIL PROTECTED] sip:[EMAIL PROTECTED] http://www.nexusuk.org/
Servatis a periculum, servatis
On Mon, 14 Apr 2008, Matt Williams wrote:
From the proposal at
http://wiki.openstreetmap.org/index.php/Proposed_features/Water_cover it
seems that natural=beach, surface=rocky (or surface=rock?) and optional
water=tidal tag if you feel like it :)
Excellent - that seems to be a good answer,
On Monday 14 April 2008 15:46:14 you wrote:
On Mon, 14 Apr 2008, Matt Williams wrote:
From the proposal at
http://wiki.openstreetmap.org/index.php/Proposed_features/Water_cover it
seems that natural=beach, surface=rocky (or surface=rock?) and optional
water=tidal tag if you feel like it
High and low water marks vary every day, the height of the tides vary a lot..
Tidal ranges in the south west of England can be about 13 metres in height.
Most measurements are made using Mean Sea Level, which doesn't change (rising
sea levels aside). When you look at the Yahoo images, how
On Mon, 14 Apr 2008, Chris Hill wrote:
High and low water marks vary every day, the height of the tides vary a
lot..
Correct - anyone who records high and low watermarks on maps/charts will
be using the highest and lowest astronomical tides, not the high/low tide
of an arbitrary day.
Most
Hi. It's nice to see the Water Cover page anticipate a tagging question :)
Just looking at wikipedia, they say that beaches need to be formed by
gradual deposit of solids from dissolved in waves, which means (a) rocky
shorelines might not be a beach, and (b) definition of beach is confusing
Lots of coastline in OSM comes from PGS data. According to
http://wiki.openstreetmap.org/index.php/PGS_whitepaper
This new shoreline is an approximation of the High Water Line; it is NOT a
Mean High Water Line since the source data have not been tide coordinated.
This of course says nothing
Also, if you are in an area with extensive coastal swamps (mangroves
for example) be aware that the PGS data usually traces the land side
of the swamp. This makes sense, looking at the statement below, but
the mangrove swamps can extend for many kilometres to sea, and I
wouldn't want to sail
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