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soilKey  

Automated Soil Profile Classification per WRB 2022, 'SiBCS' 5 and USDA Soil Taxonomy 13
View on CRAN: Click here


Download and install soilKey package within the R console
Install from CRAN:
install.packages("soilKey")

Install from Github:
library("remotes")
install_github("cran/soilKey")

Install by package version:
library("remotes")
install_version("soilKey", "0.9.184")



Attach the package and use:
library("soilKey")
Maintained by
Hugo Rodrigues
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2026-05-19
Latest Update: 2026-05-19
Description:
Implements deterministic classification keys for the World Reference Base for Soil Resources ('WRB') 2022, 4th edition (IUSS Working Group WRB, 2022, ISBN:979-8-9862451-1-9), the Brazilian System of Soil Classification ('SiBCS') 5th edition (Santos et al., 2018, ISBN:978-85-7035-800-4) and the United States Department of Agriculture ('USDA') Soil Taxonomy 13th edition (Soil Survey Staff, 2022, <https://www.nrcs.usda.gov/resources/guides-and-instructions/keys-to-soil-taxonomy>). Provides a unified profile representation with explicit per-attribute provenance, multimodal extraction from field reports and photos via vision-language models (VLM), spatial priors from 'SoilGrids' (Poggio et al., 2021, <doi:10.5194/soil-7-217-2021>) and national soil maps, and gap-filling of soil attributes from visible-near-infrared (Vis-NIR) or mid-infrared (MIR) spectra via the Open Soil Spectral Library ('OSSL'; Safanelli et al., 2025, <doi:10.7717/peerj.18908>). The taxonomic key itself is never delegated to a large language model (LLM); LLMs are restricted to schema-validated extraction. Each classification result reports a key trace, a provenance-aware evidence grade, and ambiguities that further measurement would resolve.
How to cite:
Hugo Rodrigues (2026). soilKey: Automated Soil Profile Classification per WRB 2022, 'SiBCS' 5 and USDA Soil Taxonomy 13. R package version 0.9.184, https://cran.r-project.org/web/packages/soilKey. Accessed 25 Oct. 2026.
Previous versions and publish date:
(2026-10-14 20:42), 0.9.97 (2026-05-19 11:20), 0.9.155 (2026-06-22 08:50), 0.9.157 (2026-06-30 15:20), 0.9.184 (2026-07-07 21:40)
Other packages that cited soilKey R package
View soilKey citation profile
Other R packages that soilKey depends, imports, suggests or enhances
Complete documentation for soilKey
Functions, R codes and Examples using the soilKey R package
Full soilKey package functions and examples
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