[Imports] Finalizing DC building + address import round 2

Alex Barth alex at mapbox.com
Wed Aug 7 19:17:32 UTC 2013


Woahoo, Jaak. Thanks for pointing this out, but I'm trying to keep the
scope tight :)

Looks interesting though ....


On Wed, Aug 7, 2013 at 3:20 AM, Jaak Laineste (Nutiteq) <jaak at nutiteq.com>wrote:

> Hi Alex,
>
> Buildings in DC reminds me that this is the only dataset where I've seen
> 3D Shapefiles [1] in the wild. Have you considered importing this data to
> the OSM as Simple 3D  Building [2] schema?
>
> It would not be trivial at all, as you'd need to convert and approximate
> 3D shapes (triangles / meshes) into parametric height and roof type tags.
> Common opensource tools like OGR and shapelib does not read the MultiPatch
> elements, or project them to 2D (e.g. in QGIS you see roofs like [3]), so
> custom shapefile reader would be needed; but Shapefile format is actually
> quite simple to read. And then you'd need to do conflation with all the
> existing data, not only adding tags but also do splitting to building parts.
>
> [1] http://dcatlas.dcgis.dc.gov/metadata/BldgPly_3D.html
> [2] http://wiki.openstreetmap.org/wiki/Simple_3D_Buildings
> [3] http://grab.by/p8HC
>
> Jaak
>
> On 07.08.2013, at 2:28, Alex Barth <alex at mapbox.com> wrote:
>
> Hello everyone -
>
> I've put together a proposal [1] to finalize the stalled DC building +
> address import.
>
> Working with Chris Andino and others in the DC community we've made some
> good progress over the last couple of weeks. A good first round of reviews
> on imports-us [3] has yielded great feedback [2] that I'm looking to
> incorporate it at this weekend's OSM birthday sprint in DC.
>
> Please review the proposal below [1] and post feedback here on the list
> **after checking for existing issues** [2].
>
> Thank you for your time!
>
> [1] https://github.com/osmlab/dcbuildings/blob/master/PROPOSAL.md
> [2] https://github.com/osmlab/dcbuildings/issues?state=open
> [3]
> http://lists.openstreetmap.org/pipermail/imports-us/2013-August/000209.html
> [4] http://osmlab.github.io/birthday-sprint/
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