Test for an abrupt textural change between adjacent horizons

WRB 2022 planic criterion: clay content of the underlying horizon is at least double that of the overlying horizon, with the transition occurring within 7.5 cm vertical distance. v0.3 implements the clay-doubling test plus an optional boundary_distinctness check (must be "abrupt" or "very abrupt" on the upper horizon).

Usage

test_abrupt_textural_change(h, min_ratio = 2, require_abrupt_boundary = TRUE)

Arguments

h

Numeric threshold or option (see Details).

min_ratio

Numeric threshold or option (see Details).

require_abrupt_boundary

Numeric threshold or option (see Details).