countryscales - Country Scales
Format numbers, percentages and currencies, and label
'ggplot2' axes, using country- or locale-specific conventions
such as the thousands separator, decimal mark, currency symbol
placement, and sign placement. Locale data is sourced from the
Unicode Common Locale Data Repository (CLDR,
<https://cldr.unicode.org>) via the 'i18n' package, covering
several hundred locales in addition to dedicated helpers for
Germany, Switzerland and the United States.