coords_to_iso3: Convert coordinates to ISO country code
Description
This function takes a set of longitude and latitude coordinates and retrieves the administrative
units that each point lies within. The administrative units are given in the ISO-3166 Alpha-3 country code
standard (https://en.wikipedia.org/wiki/ISO_3166-1_alpha-3).
Usage
coords_to_iso3(lon, lat)
Value
data.frame
Arguments
lon
A numeric vector giving the longitude of the sampling sites in Decimal Degrees.
lat
A numeric vector giving the latitude of the sampling sites in Decimal Degrees.