[talk-au] PSMA Administrative Boundaries

[Joel H.]

>Do you have examples of the overlapping ways? It looks pretty okay
around Brisbane to me. Here's an a mesh of the LGA's in GeoJSON which
you can import into JOSM with enough memory.
https://tianjara.net/data/LGA_mesh.geojson.xz

Just import the shapefile into JOSM and use the validation. The GeoJSON
file is looking much cleaner.


>That's fairly easy to as a preprocessing step, eg with ogr2osm or via
other scripts. I've been working on processing the PSMA data to make it
easier to import. Since I think we should reuse existing ways where
possible, if we did that it's a mostly manual process anyway. Even
without reusing existing way, to get relations you need shared ways on
the borders. One approach is to use
https://github.com/andrewharvey/geojson-mesh to get single ways for the
border which we then manually join up into the full relations in JOSM.

We might just have to do this. It would be a lot faster then trying to
find overlapping ways, at least on the LGA data.


>If there's an existing place node, then we should use that as the label
member of the relation

Yes this is what I was intending.