[talk-au] PSMA Administrative Boundaries

[Phil Wyatt]

Hi Andrew,

I am happy to help out BUT, I have never done any imports previously so it will be a cautious approach from me. My main interest is in Tasmania.


Cheers - Phil, 
On the road with his iPad 

> On 31 Aug 2018, at 4:23 pm, Andrew Harvey <andrew.harvey4 at gmail.com> wrote:
> 
> The Department of Industry, Innovation and Science which manages data.gov.au have just completed the OSMF CC BY waiver allowing the PSMA Administrative Boundaries[1] to be used within OpenStreetMap[2].
> 
> Quoting their email, "The Australian Government received great encouragement from PSMA Australia Limited to make the AB [Administrative Boundaries] data more accessible. Many thanks to OSM for your ongoing global open data efforts."
> 
> Others more active in working with admin boundaries in OSM might be able to comment further on my analysis, but I've taken a look at the current OSM data from a planet extract[3], using osmium tool to extract administrative boundaries[4]:
> 
>     osmium tags-filter australia-latest.osm.pbf nwr/boundary=administrative -o osm-admin-boundaries.osm.pbf
> 
> Then converted to GeoPackage to open in QGIS to compare to PSMA boundaries:
> 
>     ogr2ogr -f GPKG osm-admin-boundaries.gpkg osm-admin-boundaries.osm.pbf
> 
> The admin_level values for Australia are defined as[5]:
> 
> 3 n/a
> 4 State or Territory
> 5 n/a (but used in Victoria for regions[6])
> 6 Local Government Area (eg Shire/Council)
> 7 District or Region (e.g Perthshire, Fitzroy, Canning, Greater Sydney, Greater Melbourne, etc.)
> 8 Postcode
> 9 Suburb and Locality
> 10 Suburb and Locality
> 
> (not sure why the split across 9 and 10...? but it looks like no data for 9 and all suburb/localities are marked as 10, a seperate discussion but perhaps they should be 9 and smaller neighbourhoods be in 10?)
> 
> PSMA Admin Boundaries provide (for Australia wide Shapefiles see [7] built from [8])
> 
> Commonwealth Electoral Boundaries (I don't think should be included in OSM)
> State Electoral Boundaries (I don't think should be included in OSM)
> State Boundaries
> Local Government Areas
> Suburbs / Localities
> Town Points
> Wards
> 
> admin_level 6 LGAs
> It looks like NSW, VIC have complete LGA coverage already aside a few minor differences, but NT is patchy and TAS, QLD, WA are almost non-existent (ACT doesn't really have LGAs it's all managed by the Territory). SA is missing a few LGAs which exist in the PSMA data.
> 
> admin_level 7 is a mixed bag, but the PSMA data won't help here
> 
> suburbs/localities
> NSW, VIC, SA all have pretty much complete data in OSM but there are a number of differences with the PSMA data which should warrent investigation and correction.
> 
> ACT I think has good existing data (in the PSMA data in suburb/localities there are both levels, eg. Canberra Centre and Parkes), but the districts have a slightly different name format.
> 
> All other states are empty in OSM.
> 
> Keeping in mind that we have state data for admin boundaries in VIC (VicMap), NSW (Spatial Services), ACT (ACTmapi) and SA (data.sa.gov.au) already.
> 
> So there does appear to be a lot of data missing in OSM, which licensing wise we could bring in to OSM. So I guess the question is should we and how should we do that. Is anyone interested in working on this? If people are, I think it should go through the proper import process (discuss first, identify the process and then execute).
> 
> [1] https://data.gov.au/dataset/psma-administrative-boundaries
> [2] https://wiki.openstreetmap.org/wiki/File:Department_of_Industry_Innovation_and_Science_ODbl_permission_Administrative_Boundaries.pdf
> [3] http://download.openstreetmap.fr/extracts/oceania/
> [4] https://osmcode.org/osmium-tool/manual.html#filtering-by-tags
> [5] https://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative#10_admin_level_values_for_specific_countries
> [6] https://en.wikipedia.org/wiki/Regions_of_Victoria
> [7] https://tianjara.net/data/psma-admin-bdys/
> [8] https://github.com/andrewharvey/psma-admin-bdys-data
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