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Load Africa Soil Profiles (AfSP) v1.2 as PedonRecord objects

Source: R/afsp.R
load_afsp_pedons.Rd

Reads the AfSP DBase tables shipped inside AF-AfSP1.2.zip (downloadable from https://files.isric.org/public/afsp/AF-AfSP1.2.zip) and converts each profile + its horizons to a soilKey PedonRecord. Filters to profiles with a populated WRB 2006 RSG code (i.e.\ classifiable; AfSP has ~7000 of these of the total 18,533).

Usage

load_afsp_pedons(
  afsp_dir,
  max_n = NULL,
  countries = NULL,
  wrb_codes = NULL,
  verbose = TRUE
)

Arguments

afsp_dir

Directory containing the extracted AfSP DBase tables (AfSP012Qry_Profiles.dbf, AfSP012Qry_Layers.dbf).

max_n

Optional integer; take a random sample of this size from the classifiable profiles.

countries

Optional character vector of ISO country codes to keep (e.g.\ c("MW", "ET", "TZ")).

wrb_codes

Optional character vector of WRB 2006 RSG codes to keep (e.g.\ c("VR", "FR", "AC")).

verbose

Print progress.

Value

A list of PedonRecord objects.

References

Leenaars, J. G. B., van Oostrum, A. J. M., & Ruiperez Gonzalez, M. (2014). Africa Soil Profiles Database, Version 1.2. ISRIC Report 2014/01. ISRIC – World Soil Information, Wageningen. Project page: https://isric.org/projects/africa-soil-profiles-database-afsp.