ukgeographies

library(ukgeographies)

Notes on URL patterns:

• Countries
  • Countries (December 2022) Boundaries GB BUC: https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Countries_December_2022_GB_BUC/FeatureServer/0/query?outFields=*&where=1%3D1&f=geojson
  • Countries (December 2019) Boundaries GB BUC: https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Countries_Dec_2019_UGCB_GB_2022/FeatureServer/0/query?outFields=*&where=1%3D1&f=geojson
• Counties
  • Counties (December 2021) Boundaries EN BGC : https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Counties_December_2021_EN_BGC_2022/FeatureServer/0/query?outFields=*&where=1%3D1&f=geojson
  • Counties (December 2021) Boundaries EN BFC https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Counties_December_2021_EN_BFC_2022/FeatureServer/0/query?outFields=*&where=1%3D1&f=geojson
  • Counties (May 2023) Boundaries EN BFC: https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Counties_May_2023_Boundaries_EN_BFC/FeatureServer/0/query?outFields=*&where=1%3D1&f=geojson
• Combined authorities
  • Combined Authorities (December 2022) Boundaries EN BUC :
    https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Combined_Authorities_December_2022_EN_BUC/FeatureServer/0/query?outFields=*&where=1%3D1&f=geojson
  • Countries (December 2019) Boundaries GB BUC:

Another option could be having a dataframe with all the possible URLs and retrieve them from there

Components

Clipping / Resolution:

• BFC: Full resolution - clipped to the coastline (Mean High Water mark)
• BFE: Full resolution - extent of the realm (usually this is the Mean Low Water mark but, in some cases, boundaries extend beyond this to include offshore islands)
• BGC: Generalised (20m) - clipped to the coastline (Mean High Water mark)
• BUC: Ultra Generalised (500m) - clipped to the coastline (Mean High Water mark)