Test that a horizon designation matches a regex pattern

Useful for diagnostics that key on field-described features (e.g., glossic tongues for retic, R / Cr for leptic, "f" suffix for cryic / frozen, hortic / irragric / plaggic / pretic / terric for anthric).

Usage

test_designation_pattern(h, pattern, candidate_layers = NULL)

Arguments

h

Numeric threshold or option (see Details).

pattern

A regex (case-insensitive).

candidate_layers

Numeric threshold or option (see Details).