Look up siblings and cousins for a given soil series from the current fiscal year SSURGO snapshot via SoilWeb.
The siblings of any given soil series are defined as those soil components (major and minor) that share a parent map unit with the named series (as a major component). Component names are filtered using a snapshot of the Soil Classification database to ensure that only valid soil series names are included. Cousins are siblings of siblings. Data are sourced from SoilWeb which maintains a copy of the current SSURGO snapshot. Visualizations of soil "siblings"-related concepts can be found in the "Sibling Summary" tab of Soil Data Explorer app: https://casoilresource.lawr.ucdavis.edu/sde/.
Additional resources:
siblings(s, only.major = FALSE, component.data = FALSE, cousins = FALSE)
character vector, the name of a single soil series, case-insensitive.
logical, should only return siblings that are major components
logical, should component data for siblings (and optionally cousins) be returned?
logical, should siblings-of-siblings (cousins) be returned?
A list
containing:
sib: data.frame
containing siblings, major component flag, and number of co-occurrences
sib.data: data.frame
containing sibling component data (only when component.data = TRUE
)
cousins: data.frame
containing cousins, major component flag, and number of co-occurrences (only when cousins = TRUE
)
cousin.data: data.frame
containing cousin component data (only when cousins = TRUE, component.data = TRUE
)
O'Geen, A., Walkinshaw, M. and Beaudette, D. (2017), SoilWeb: A Multifaceted Interface to Soil Survey Information. Soil Science Society of America Journal, 81: 853-862. doi:10.2136/sssaj2016.11.0386n
# \donttest{
if(requireNamespace("curl") &
curl::has_internet()) {
# basic usage
x <- siblings('zook')
x$sib
# restrict to siblings that are major components
# e.g. the most likely siblings
x <- siblings('zook', only.major = TRUE)
x$sib
}
#> series sibling majcompflag n
#> 1 zook Olmitz TRUE 17
#> 2 zook Vigar TRUE 12
#> 3 zook Vesser TRUE 10
#> 4 zook Ely TRUE 10
#> 5 zook Excello TRUE 9
#> 6 zook Colo TRUE 8
#> 7 zook Nodaway TRUE 5
#> 8 zook Zoe TRUE 3
#> 9 zook Mt. Sterling TRUE 3
#> 10 zook Kezan TRUE 2
#> 11 zook Clamo TRUE 2
#> 12 zook Humeston TRUE 1
#> 13 zook Klum TRUE 1
#> 14 zook Quiver TRUE 1
# }