[Tagging] Mapping of VLF antenna lines

[stevea]

On Jun 16, 2022, at 4:48 AM, Warin <61sundowner at gmail.com> wrote:
> The one I referenced each line would be one part of the antenna, the total antenna would be the collection of the lines. 
> While a single line could be used as an antenna it is more efficient to use the collection as an array. 
> Much like astronomy radio telescopes used collectively as a 'square kilometer array' in Africa and Australia.

It seems quite correct to map these gigantic antennas as ways), each way tagged man_made=antenna (appreciate it, Martin!), NOT tagged power=line as some seem to be, including the Australian example given — I'd guess this was done for the sole purpose of "so it renders" which, of course, is frowned upon AND is incorrect.  Ideally, we'd collect these ways together into a relation, I'd postulate the relation also be tagged man_made=antenna and type=site. (Right?)  If not type=site, I'm not sure what a better type=* value might be (other than site), suggestions are welcome here.

Guy lines / wires / cables / ropes are another topic.  Rendering, as mentioned, is another topic.


Clifford wrote:
>> ...man_made=antenna should be the right tag since the lines between towers are the actual antenna. Taginfo shows only 576 antennas mapped as ways.

576 is a small number compared to the number of ways in OSM, but 576 is a large enough number that OSM ought to sensibly tag consistently on these.  We have a good start here.  Thank you for posing the question, Clifford.

>> If I was energetic I'd suggest moving communications into its own key. But right now, I need a glass of wine.

Another fine suggestion, even WITH a glass of wine, as our data could use some better restructuring of these important concepts and OSM key-value pairs.  Care for a little project, anybody?!  (With <600 ways, I do think it would be fairly small).

I thank Clifford for posing the topic and the list for allowing me to "bridge a recollection" (antenna guy wires I mapped years ago), expanding some good dialog, and gaining something closer to agreement and perhaps even actual answers.