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Showing content from https://github.com/ncss-tech/sharpshootR below:

ncss-tech/sharpshootR: Miscellaneous soil data management, summary, visualization, and conversion utilities to support soil survey.

This package contains a mish-mash of functionality and sample data related to the daily business of soil survey operations with the USDA-NRCS. Many of the functions are highly specialized and inherit default arguments from the names used by the various NCSS (National Cooperative Soil Survey) databases.

Get the stable version from CRAN:

install.packages('sharpshootR', dep = TRUE)

Get the development version from Github, after installing the CRAN version + dependencies:

remotes::install_github("ncss-tech/sharpshootR", dependencies=FALSE, upgrade=FALSE, build=FALSE)

Install Suggested Packages

p <- c("MASS", "spdep", "circlize", "rvest", "xml2", "terra", 
       "raster", "exactextractr", "httr", "jsonlite", "igraph", 
       "dendextend", "testthat", "hydromad", "latticeExtra", 
       "farver", "venn", "gower", "daymetr", "elevatr", 
       "Evapotranspiration", "zoo", "SoilTaxonomy", "sf", "Hmisc"
)

install.packages(p)

http://ncss-tech.github.io/AQP/

library(sharpshootR)
library(aqp)
data(loafercreek, package = 'soilDB')

# generalize horizon names using REGEX rules
n <- c('Oi', 'A', 'BA','Bt1','Bt2','Bt3','Cr','R')
p <- c('O', '^A$|Ad|Ap|AB','BA$|Bw', 
       'Bt1$|^B$','^Bt$|^Bt2$','^Bt3|^Bt4|CBt$|BCt$|2Bt|2CB$|^C$','Cr','R')
loafercreek$genhz <- generalize.hz(loafercreek$hzname, n, p)

# remove non-matching generalized horizon names
loafercreek$genhz[loafercreek$genhz == 'not-used'] <- NA
loafercreek$genhz <- factor(loafercreek$genhz)

# aggregate color data, this function is from the `aqp` package
a <- aggregateColor(loafercreek, 'genhz', k = 8)

# plot
par(mar=c(4.5, 1.25, 1, 0.25))
aggregateColorPlot(a, print.n.hz = TRUE)

citation("sharpshootR")
#> 
#> To cite package 'sharpshootR' in publications use:
#> 
#>   Beaudette D, Skovlin J, Roecker S, Brown A (2023). _sharpshootR: A
#>   Soil Survey Toolkit_. R package version 2.2,
#>   <https://CRAN.R-project.org/package=sharpshootR>.
#> 
#> A BibTeX entry for LaTeX users is
#> 
#>   @Manual{,
#>     title = {sharpshootR: A Soil Survey Toolkit},
#>     author = {Dylan Beaudette and Jay Skovlin and Stephen Roecker and Andrew Brown},
#>     year = {2023},
#>     note = {R package version 2.2},
#>     url = {https://CRAN.R-project.org/package=sharpshootR},
#>   }