soil_af_elements: Soil elements data for Africa

View source: R/soil_afsis.R

soil_af_elementsR Documentation

Soil elements data for Africa


Connect to or download chemical soil element concentration (for the 0-30 cm topsoil) data for Africa. The spatial resolution is 30 arc-seconds (about 1 km2), aggregated from the original 250 m spatial resolution.

The data have an Open Data Commons Open Database License (ODbL)

For more information, see


soil_af_elements(var, path, ...)



character. Variables name. One of: "Al", "B", "Ca", "Cu", "Fe", "K", "Mg", "Mn", "N", "Na", "P", "Ptot", "Zn". See Details


character. Path for storing the downloaded data. See geodata_path


additional arguments passed to download.file


var description unit
Al Extractable aluminum mg kg-1 (ppm)
B Extractable boron mg kg-1 (ppm)
Ca Extractable calcium mg kg-1 (ppm)
Cu Extractable copper mg kg-1 (ppm)
Fe Extractable iron mg kg-1 (ppm)
K Extractable potassium mg kg-1 (ppm)
Mg Extractable magnesium mg kg-1 (ppm)
Mn Extractable manganese mg kg-1 (ppm)
N Organic nitrogen mg kg-1 (ppm)
Na Extractable sodium mg kg-1 (ppm)
P Extractable phosphorus mg (100 kg-1)
Ptot Total phosphorus mg (100 kg-1)
Zn Extractable zinc mg kg-1 (ppm)




Hengl T, Heuvelink GBM, Kempen B, Leenaars JGB, Walsh MG, Shepherd KD, et al. (2015) Mapping Soil Properties of Africa at 250 m Resolution: Random Forests Significantly Improve Current Predictions. PLoS ONE 10(6): e0125814. doi:10.1371/journal.pone.0125814

See Also

soil_af, soil_af_isda, soil_world


fe <- soil_af_elements("Fe", path=tempdir(), quiet=TRUE)

geodata documentation built on Oct. 13, 2023, 9:07 a.m.