Makes a SpatRaster or SpatVector mask layer of Africa, based on shapefiles for African nations from the malaraAtlas package.
Usage
make_africa_mask(
filename = NULL,
type = c("raster", "vector"),
res = c("high", "low"),
countries = NULL
)
Arguments
- filename
Character of file path and name if mask is to be written to disc.
- type
Character raster or vector; to return mask as either SpatRaster or SpatVector.
- res
Character "high" or "low"; corresponding to resolution of 0.008333333 or 0.04166667 decimal degrees
- countries
Character of ISO3 country names. If NULL returns all countries in Africa.
Value
SpatRaster or SpatVector in WGS 84 (EPSG:4326).
Details
Raster layers creates with extent of terra::ext(-18.0000019073486, 52.0416647593181, -34.9999987284343, 37.5416679382324)
Examples
if (FALSE) { # \dontrun{
# Create an object in workspace
africa_mask_v <- make_africa_mask(type = "vector")
# Save to disk
make_africa_mask(filename = "africa_mask.tif", type = "raster")
# or do both at once
africa_mask_r <- make_africa_mask("africa_mask.tif")
} # }