download_admin_data: Download administrative boundaries from geoBoundaries API
Description
This function takes a single ISO country code and downloads the corresponding
high resolution administrative boundary GeoJSON files from the www.geoBoundaries.org API
hosted at GitHub HERE. If the
desired administrative level is not available the next most detailed administrative level is returned.
A three-letter capitalized character string. Must follow the ISO-3166 Alpha-3 country code
release
A character string specifying the release type on the geoBoundaries API. It should be one of 'gbOpen',
'gbHumanitarian', or 'gbAuthoritative'. Release types are described at https://www.geoboundaries.org/api.html#api.
path_output
A character string giving the file path of an output directory to save downloaded data.
simplified
Logical indicating whether to download simplified administrative boundaries instead of high resolution. Default is FALSE.
keep_geojson
Logical indicating whether to keep the raw geojson files downloaded from geoBoundaries API. Default is FALSE.