rlepack: Hybrid Index, rle-pack utilities

In bit: Classes and Methods for Fast Memory-Efficient Boolean Selections

Hybrid Index, rle-pack utilities

Description

Basic utilities for rle packing and unpacking and apropriate methods for rev() and unique().

Usage

rlepack(x, ...)

## S3 method for class 'integer'
rlepack(x, pack = TRUE, ...)

rleunpack(x)

## S3 method for class 'rlepack'
rleunpack(x)

## S3 method for class 'rlepack'
rev(x)

## S3 method for class 'rlepack'
unique(x, incomparables = FALSE, ...)

## S3 method for class 'rlepack'
anyDuplicated(x, incomparables = FALSE, ...)

Arguments

x	in 'rlepack' an integer vector, in the other functions an object of class 'rlepack'
...	just to keep R CMD CHECK quiet (not used)
pack	FALSE to suppress packing
incomparables	just to keep R CMD CHECK quiet (not used)

Value

A list with components:

• first: the first element of the packed sequence

• dat: either an object of class rle() or the complete input vector x if rle-packing is not efficient

• last: the last element of the packed sequence

Author(s)

Jens Oehlschlägel

See Also

ff::hi(), intrle(), rle(), rev(), unique()

Examples

  x <- rlepack(rep(0L, 10))

bit documentation built on April 4, 2025, 3:09 a.m.