[Tagging] Simplify building:part areas

Clifford Snow clifford at snowandsnow.us
Fri Aug 18 00:30:08 UTC 2017

On Thu, Aug 17, 2017 at 4:12 PM, Javier Sánchez Portero <
javiersanp at gmail.com> wrote:

> I am thinking in ways to reduce the complexity that introduces the mapping
> of parts of buildings. For example:
> * If one part is inscribed within a larger one, can I use simple ways
> overlapped and leave to the render decide how to draw them or should I
> create a multipolygon for the larger part with the smaller part with inner
> role? I'm prone to the first.

An example would help. If the building has an inner court yard, then a
multipolygon would be appropriate, with the inner court yard with an inner

> * In the wiki [1] says that the outline should be tagged with
> building:levels and height, but this, if the parts cover the whole outline,
> is a duplication since these tags will always be in some of the parts.
> Could I delete the part(s) whose labels match those of the outline?

If you use a multipolygon, then the multipolygon would contain the levels
and height.

> [1] https://wiki.openstreetmap.org/wiki/Key:building:part
> Greetings, Javier
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