Module format 

Label formatting functions for scale breaks. Analogous to R’s scales package (comma, percent, dollar, scientific, number, SI, ordinal, bytes).

Functions

label_bytes

Byte-size formatter. binary = true uses 1024-based KiB/MiB; otherwise 1000-based kB/MB.

label_comma

Format with comma separators for thousands (e.g., 1,234,567).

label_dollar

Format as US dollar (e.g., 1234.5 → “$1,235”).

label_number

General configurable number formatter (R’s scales::label_number). Multiplies by scale, rounds to accuracy (None = trim), and wraps in prefix/suffix.

label_ordinal

Ordinal formatter: 1 → “1st”, 2 → “2nd”, 3 → “3rd”, 11 → “11th”.

label_percent

Format as percentage (e.g., 0.5 → “50%”).

label_scientific

Format in scientific notation (e.g., 12345 → “1.23e4”).

label_si

SI-prefixed number formatter: 1_500 → “1.5k”, 2.3e6 → “2.3M”, 5e-4 → “500µ”.

Type Aliases

LabelFormatter

A label formatter — any Fn(f64) -> String. The plain label_* functions coerce into this, and the configurable label_number/label_si/… builders return one directly.