preceding_taxon_codes

Find all codes that logically precede the specified codes. For instance, code "ABC" ("Anhyturbels") returns "AA" ("Histels") "ABA" ("Histoturbels") and "ABB" ("Aquiturbels"). Use in conjunction with a lookup table that maps Order, Suborder, Great Group and Subgroup taxa to their codes (see <code>taxon_code_to_taxon</code> and <code>taxon_to_taxon_code</code>).

Taxonomic dictionaries, formative element lists, and functions related to the maintenance, development and application of U.S. Soil Taxonomy.
Data and functionality are based on official U.S. Department of Agriculture sources including the latest edition of the Keys to Soil Taxonomy. Descriptions and metadata are obtained from the National Soil Information System or Soil Survey Geographic databases. Other sources are referenced in the data documentation.
Provides tools for understanding and interacting with concepts in the U.S. Soil Taxonomic System. Most of the current utilities are for working with taxonomic concepts at the "higher" taxonomic levels: Order, Suborder, Great Group, and Subgroup.

Andrew Brown

SoilTaxonomy

A System of Soil Classification for Making and Interpreting Soil
Surveys

Dylan Beaudette

preceding_taxon_codes function

<dl><dt>codes</dt>
<dd>A character vector of codes to calculate preceding codes for</dd></dl>

Arguments

Get taxon codes of preceding taxa — preceding_taxon_codes

<dl>

<dt>codes</dt>
<dd>A character vector of codes to calculate preceding codes for</dd>

</dl>

preceding_taxon_codes: Get taxon codes of preceding taxa

Description

Usage

Value

Arguments

Details

See Also

Examples