Pre-computed Equal-Area Country Halos

A named list of pre-computed halo geometries for each country where the halo area equals the country area (area proportion = 1). These halos account for land masking (sea areas excluded).

Usage

country_halos

Format

A named list with ISO3 country codes as names. Each element is either an sfc geometry (POLYGON or MULTIPOLYGON) in WGS84, or NULL if computation failed for that country.

Source

Computed from Natural Earth country polygons and land mask.

Details

Each halo is a "donut" shape: the area between the original country boundary and the expanded boundary, clipped to land.

Examples

# Get France's equal-area halo
france_halo <- country_halos[["FRA"]]