combine_classifications: Combine hierarchical classifications

In piar: Price Index Aggregation

Combine hierarchical classifications

Description

Combine hierarchical classifications by stacking one classification after another.

Usage

combine_classifications(..., sep = ".")

Arguments

...	A collection of lists, one for each classification, each giving the "digits" that represent each level in the hierarchy, as made by expand_classification() or split_classification().
sep	A character used to separate the classifications in .... The default separates levels across classifications by ".".

Value

A list with a entry for each level in the combined classification.

Examples

# Combine an unbalanced industry classification with a balanced
# geographic classification

industry <- c("111", "112", "12")
region <- c("11", "21", "22")

combine_classifications(
  expand_classification(industry, pad = "0"),
  expand_classification(region)
)

piar documentation built on May 6, 2026, 9:06 a.m.