2017-08-18 9:01 GMT+01:00 Tom Pfeifer <t.pfei...@computer.org>: > On 18.08.2017 02:30, Clifford Snow wrote: > >> On Thu, Aug 17, 2017 at 4:12 PM, Javier Sánchez Portero < >> javiers...@gmail.com <mailto:javiers...@gmail.com>> wrote: >> * 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. >> > > The building outline represents the "footprint" of the building on the > ground, and provides all non-3D properties such as building type (e.g. > building=apartments), address, overall height, etc. > Thus it provides backward compatibility for a data consumer who does not > want to evaluate building:part. > > If e.g. the lower floors of the apartment building is wider than the upper > floors, you can tag the outline with both, building=apartments and > building:part=yes and the appropriate 3D-properties, and the narrower upper > floors with building:part=yes and 3D-properties, but without building=*. > > tom >
Thank you. This clarifies me a lot because I had not thought to use both building=* and building:part=* in the footprint. Javier
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