argillic.clay.increase.depth: Return upper boundary of argillic horizon

Description Usage Arguments Value Author(s) See Also Examples

View source: R/getArgillicBounds.R

Description

Returns the top depth of the argillic horizon as a numeric vector.

Uses crit.clay.argillic to determine threshold clay increase, and get.increase.matrix to determine where increase is met within a vertical distance of 30 cm.

Usage

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argillic.clay.increase.depth(p, clay.attr = "clay")

Arguments

p

A single-profile SoilProfileCllection object.

clay.attr

OPTIONAL: horizon attribute name referring to clay content. default: 'clay'

Value

A numeric vector containing top depth of argillic horizon, if present, or NA.

Author(s)

Andrew Gene Brown

See Also

getArgillicBounds, get.increase.matrix, crit.clay.argillic

Examples

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data(sp1, package = 'aqp')
depths(sp1) <- id ~ top + bottom
site(sp1) <- ~ group

p <- sp1[1]
attr <- 'prop' # clay contents 
foo <- argillic.clay.increase.depth(p, clay.attr = attr)
foo

ncss-tech/aqp documentation built on April 4, 2020, 8:11 a.m.