Read the taxon_group rule registry (metadata/taxon_group.csv)

Strict read — every column character, an empty cell is NA (never the string "NA"), and the shape is validated: rule is class (every vocabulary taxon whose class equals rule_value, cross-dataset by construction) or dataset_taxon (rows of one dataset's vocabulary matched on match_column ∈ ds_taxa_code / ds_scientific_name / ds_common_name = match_value).

Usage

read_taxon_group_rules(path)

Arguments

path

path to the registry CSV

Value

a data.frame of rules (columns taxon_group_key, description, rule, rule_value, dataset_key, match_column, match_value)