On Mon, 13 Jul 2020 at 22:56, Martin Koppenhoefer <dieterdre...@gmail.com> wrote:
> actually all of these could be „grouped“ with tags alone, e.g distributed > museums could have an identifying „network“ tag (or sth similar). > But why invent a new network tag, if we have a site relation, waiting to be used. (I was thinking of open air museums, where the various exhibits are spread over the landscape) > For power plants a site might be appropriate, if an area does not do it > and you don’t want to rely on only tags. > If you have ever looked at the complexities of a hydro-power-plant with dams, lakes, pipes, turbines deep in the mountains or in dedicated buildings . they are really complex, and only parts of it are visible on the surface. > In theory objects like the Great Wall in China can and should be modeled > as areas, although they seem to be linear in nature, they are also thick > enough to „require“ an area representation in order to be well mapped in > the scale of OpenStreetMap (you can walk on it). > That's not true - you can walk on parts of it, other parts are completely missing, others are heaps of stones. > In practice we would also want a way to have preliminary mapping as a > line, and mixed geometry relations. A multipolygon relation for all parts > of the great wall would likely be broken every day, and would be over the > member limits for relations. > It's not a multipolygon - it is bits and pieces, some connected, same not. Some may be linear (in first approximation). > Would those that are in favour of using a site relation for a linear, > circular, interrupted structure, 19km long and some meters wide, also see > it as a good relation type for the Chinese Great Wall? > You lost me with your question here. Volker <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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