GADM attribute tables include a GID_0 (country code), GID_1 (state ID), and NAME_1 (state name). Use GID_1 for reliable joins.
| Level | Description | Example Attribute | |-------|-------------|------------------| | 0 | Country | NAME_0 = "Indonesia" | | 1 | First-level admin (province/state) | NAME_1 = "Java Barat" | | 2 | Second-level (regency/district) | NAME_2 = "Bandung" | | 3 | Third-level (subdistrict/commune) | NAME_3 = "Cimenyan" | | 4 | Fourth-level (village/neighborhood) | NAME_4 (not all countries) | download gadm data version 36 work
For more information and support, consult these resources: GADM attribute tables include a GID_0 (country code),
is a high-resolution, open-access database containing spatial boundaries for all countries and their sub-divisions. To efficiently download and analyze global boundaries, many spatial data analysts specifically opt to download GADM data version 3.6 . While newer iterations exist, version 3.6 remains a widely adopted baseline for academic research, time-series spatial analyses, and legacy GIS workflows due to its stability and structured layers. To efficiently download and analyze global boundaries, many
For global analysis, you can download the entire world as a single database on the World Download page . Note that these are very large files. Available Data Formats
: Choose GeoPackage or Shapefile . Then click the download button. The file will be named like gadm36_FRA_gpkg.zip or gadm36_FRA_shp.zip .
# Load necessary library library(sf)
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