Get the stable version from CRAN:
install.packages('aqp', dep=TRUE)
Get the development version from Github, after installing the CRAN version + dependencies:
remotes::install_github("ncss-tech/aqp", dependencies=FALSE, upgrade=FALSE, build=FALSE)
![aqp hexsticker (Paxton, Montauk, Woodbridge, Ridgebury, Whitman, Catden soil series dendogram) aqp hexsticker (Paxton, Montauk, Woodbridge, Ridgebury, Whitman, Catden soil series dendogram)](https://raw.githubusercontent.com/ncss-tech/aqp/master/misc/hexstickers/aqp_sticker_v2.png)
http://ncss-tech.github.io/AQP/
library(aqp)
data(sp4)
depths(sp4) <- id ~ top + bottom
par(mar=c(0,0,4,0))
plot(sp4, color='clay')
plot(sp4, color='CF')
Dylan Beaudette, Pierre Roudier and Andrew Brown (2021). aqp: Algorithms for Quantitative Pedology. R package version 1.29. https://CRAN.R-project.org/package=aqp
D.E. Beaudette, P. Roudier, A.T. O'Geen, Algorithms for quantitative pedology: A toolkit for soil scientists, Computers & Geosciences, Volume 52, March 2013, Pages 258-268, ISSN 0098-3004, http://dx.doi.org/10.1016/j.cageo.2012.10.020.