label_normalize: Normalize value and variable labels

In retroharmonize: Ex Post Survey Data Harmonization

Normalize value and variable labels

Description

label_normalize removes special characters, whitespace, and other typical typing errors.

Usage

label_normalize(x)

var_label_normalize(x)

val_label_normalize(x)

Arguments

x	A character vector of labels to be normalized.

Details

var_label_normalize and val_label_normalize removes possible chunks from question identifiers.

The functions var_label_normalize and val_label_normalize may be differently implemented for various survey series.

Value

Returns a suggested, normalized label without special characters. The var_label_normalize and val_label_normalize returns them in snake_case for programmatic use.

See Also

Other variable label harmonization functions: na_range_to_values()

Other harmonization functions: collect_val_labels(), crosswalk_surveys(), harmonize_na_values(), harmonize_survey_values(), harmonize_values(), harmonize_var_names(), is.crosswalk_table()

Other harmonization functions: collect_val_labels(), crosswalk_surveys(), harmonize_na_values(), harmonize_survey_values(), harmonize_values(), harmonize_var_names(), is.crosswalk_table()

Examples

label_normalize(
  c(
    "Don't know", " TRUST", "DO NOT  TRUST",
    "inap in Q.3", "Not 100%", "TRUST < 50%",
    "TRUST >=90%", "Verify & Check", "TRUST 99%+"
  )
)

var_label_normalize(
  c(
    "Q1_Do you trust the national government?",
    " Do you trust the European Commission"
  )
)

val_label_normalize(
  c(
    "Q1_Do you trust the national government?",
    " Do you trust the European Commission"
  )
)

retroharmonize documentation built on Jan. 14, 2026, 9:08 a.m.