franges: Extract Range Entries from a Format
In ksformat: 'SAS'-Style 'PROC FORMAT' for R

franges

R Documentation

Extract Range Entries from a Format

Description

Returns the range-based mappings of a ks_format object as a tidy data frame. Discrete entries (plain values, .missing, .other) are excluded.

Usage

franges(fmt)

Arguments

fmt

A ks_format object, or a character name of a format registered in the global library.

Details

Range keys are stored internally as strings such as "0,18,TRUE,FALSE". franges() parses these keys back into their numeric bounds and inclusivity flags, making it easy to inspect, filter, or programmatically reuse range definitions.

Bounds parsed as HIGH or LOW appear as Inf and -Inf respectively.

Value

A data.frame with columns low, high, inc_low, inc_high, and label. Rows are returned in the order ranges appear in the format. If the format has no range entries, an empty data frame with the same columns is returned.

Examples

fparse(text = '
VALUE age (numeric)
  [0, 18)    = "Child"
  [18, 65)   = "Adult"
  [65, HIGH] = "Senior"
  .missing   = "Unknown"
;
')
franges("age")
fclear()

ksformat documentation built on May 21, 2026, 9:07 a.m.