country_halos: Pre-computed Equal-Area Country Halos
In areaOfEffect: Spatial Support at Scale
country_halos R Documentation
Pre-computed Equal-Area Country Halos
Description
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.
Details
Each halo is a "donut" shape: the area between the original country
boundary and the expanded boundary, clipped to land.
Source
Computed from Natural Earth country polygons and land mask.
Examples
# Get France's equal-area halo
france_halo <- country_halos[["FRA"]]
areaOfEffect documentation built on Feb. 7, 2026, 1:08 a.m.
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| country_halos | R Documentation |
Pre-computed Equal-Area Country Halos
Description
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.
Details
Each halo is a "donut" shape: the area between the original country boundary and the expanded boundary, clipped to land.
Source
Computed from Natural Earth country polygons and land mask.
Examples
# Get France's equal-area halo
france_halo <- country_halos[["FRA"]]
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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