Tom Chance wrote:
Hi there,
I want a way of creating an object for an energy generator and then
saying "this is on top of / inside this building object". Here is an
example of one such object:
http://www.openstreetmap.org/browse/way/35802300
I checked on the wiki page and couldn't see any established or proposed
uses of relations for this purpose. Am I missing one, has this been
discussed before?
http://wiki.openstreetmap.org/wiki/Relations
Isn't it kind of obvious, that a "photovoltaic" type power generator is
located on top of the building rather than inside or below?
You may assume a basic level of intelligence from the user of the data
and add only information that has more than one option. E.g. is the post
box attached to a wall or does it stand on its own? In this example you
would not need a relation, since the post box node can simply be joined
with the building way.
If there is something notable about the object, you could also start
with a note=* tag that describes the interesting features. If there are
more advanced tagging schemes in the future, other mappers can apply it
without visiting the place again.
Sebastian
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