[Tagging] Orientation of an adit?
miketho16 at gmail.com
Fri Mar 10 19:30:18 UTC 2017
On Fri, Mar 10, 2017 at 12:20 PM, Zecke <zecke at historic.place> wrote:
> Am 10.03.2017 20:04, schrieb Mike Thompson:
> On Fri, Mar 10, 2017 at 7:34 AM, Kevin Kenny <kevin.b.kenny+osm at gmail.com>
>> I can just now hear, nevertheless, a chorus asserting that the
>> information is available by other means and therefore does not belong in
>> OSM. An adit or a cave entrance (that isn't a sinkhole) pretty much has to
>> go into a hillside, and a waterfall or a dam flows downhill, so with
>> information about local topography, the direction can be determined.
> In many parts of the world there may not be elevation data with an open
> license of suitable resolution to make this determination for an adit.
> It's not true that an adit always enters the hill in slope direction. I
> know of many adits entering at an angle. So this approach does not really
> help. We decided to use a different symbol for adits without direction
> information than for directed adits.
All the more reason to explicitly tag the direction of the opening.
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