World country/region geometry for GRAPH("WORLDMAP")
Source: Natural Earth, Admin 0 - Countries, 1:10m, version 5.1.1.
https://www.naturalearthdata.com/downloads/10m-cultural-vectors/10m-admin-0-countries/
https://www.naturalearthdata.com/about/terms-of-use/
Download: https://naciscdn.org/naturalearth/10m/cultural/ne_10m_admin_0_countries.zip
Archive SHA256: ce1ac7036499a0edd641fbc093cd209a98f96a49d2eca8480aaacad35138a7f6
License: Public domain. Attribution is not required by Natural Earth.
Retrieved: 2026-09-08.
258 Natural Earth country/region features (not a count of independent states).
Canonical codes: ISO_A3 except -99. FRA and NOR use ISO_A3_EH.
Other -99 features use NE- plus ADM0_A3, to avoid duplicate ISO_A3_EH codes.
Keep original NAME_JA and NAME_EN as aliases. All 258 codes/names are unique.
WGS84 longitude/latitude, full-precision source coordinates.
Preprocessing: Shapely 2.1.2 coverage_simplify, tolerance 0.08 degrees.
The invalid EGY self-intersection is repaired with make_valid, retaining polygonal parts.
Validated all geometries and coverage before/after simplification.
All polygon components retained after repair. Exterior rings clockwise, holes counterclockwise.
Vertices reduced from 548471 to 58935. Shared boundaries are simplified together.
Source date-line splits retained; the South Pole boundary spans the world width.
Boundaries follow the Natural Earth dataset's de facto representation.
Tiny regions may be smaller than a pixel; SVG/PDF preserve their vector geometry.
Preprocessing dependencies are NOT required by BASIC or the transpiler.
The bundled JSON is embedded only when a world-map operation is present.
No runtime file access or network requests are needed for maps.
