using Eurostat NUTS/LAU numbers for references values

[ImreSamu]

Hi! :heart: maybe relevant :heart:

https://ec.europa.eu/eurostat/web/nuts/national-structures-eu

• "last update 10/04/2018, based on NUTS 2016 and LAU 2017"
• imho: at least the LAU(local-administrative-units) numbers can be used.
  • https://ec.europa.eu/eurostat/web/nuts/local-administrative-units
  • These LAUs are the building blocks of the NUTS, and comprise the municipalities and communes of the European Union.
  • Since 2017, only one level of LAU has been kept.
  • Since there are frequent changes to the LAUs, Eurostat publishes an updated list towards the end of each year.

examples:

FR - Q142 - France

• NUTS1 / Z.E.A.T + DOM : 14
• NUTS2 / Régions + DOM : 27
• NUTS3 / Départements + DOM: 101
• LAU / Communes: 35 462

LU - Q32 - Luxembourg

• NUTS1: 1
• NUTS2: 1
• NUTS3: 1
• LAU / Communes : 105

HU - Q28 - Hungary

( local_knowledge=yes ) The Hungarian Eurostat numbers looks OK for references values ; but somewhere the OSM(hu) is not uptodate -> https://www.ksh.hu/regional_atlas_counties?lang=en

• NUTS1/ Statisztikai nagyrégiók : 3
  • osm : admin_level=4 and boundary=administrative in Hungary
• NUTS2/ Tervezési-statisztikai régiók : 8
  • osm: admin_level=5 and boundary=administrative in Hungary ( count= 7 - need update!! )
• NUTS3 / Megyék + Budapest : 20
  • osm: admin_level=6 and boundary=administrative in Hungary
• LAU / Települések : 3 155
  • osm: admin_level=8 and boundary=administrative in Hungary

[nlehuby]

Thanks a lot for that links :+1:

You are right, the NUTS may provide valuable information about the numbers of administrative zones we should expect in each countries, but I don't think we can use them as is : as they are primarily for statistical purposes and do not necessarily correspond to administrative divisions within the country, some local knowledge is still required.

For instance, for France

• the NUTS1 are not really relevant
• the NUTS2 relate to an old French subdivision
• the NUTS3 and the LAU seem ok :wink:

If you know these numbers are ok in Hungary, we would gratefully accept some PR :

• in the file that tells us how to extract administrative zones from OSM : https://github.com/osm-without-borders/libpostal/blob/master/resources/boundaries/osm/hu.yaml
• in the file that tells how many zones we should expect for each country : https://github.com/osm-without-borders/cosmogony-data-dashboard/blob/master/reference_stats_values.csv#L176

[ImreSamu]

Thanks, :+1:

I have created a small fix for Hungary: https://github.com/osm-without-borders/cosmogony-data-dashboard/pull/7

small feedback/comment: it is hard to find country names because now it is in FR(Hongrie) and I am searched for EN(Hungary)