bit: as.bitwhich – R documentation

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bit

as.bitwhich

Coercing to bitwhich

Description

Functions to coerce to bitwhich

Usage

## S3 method for class ''NULL''
as.bitwhich(x, ...)

## S3 method for class 'bitwhich'
as.bitwhich(x, ...)

## S3 method for class 'which'
as.bitwhich(x, maxindex = attr(x, "maxindex"), ...)

## S3 method for class 'ri'
as.bitwhich(x, ...)

## S3 method for class 'integer'
as.bitwhich(x, poslength = NULL, ...)

## S3 method for class 'double'
as.bitwhich(x, poslength = NULL, ...)

## S3 method for class 'logical'
as.bitwhich(x, poslength = NULL, ...)

## S3 method for class 'bit'
as.bitwhich(x, range = NULL, poslength = NULL, ...)

as.bitwhich(x = NULL, ...)

Arguments

`x`	An object of class 'bitwhich', 'integer', 'logical' or 'bit' or an integer vector as resulting from 'which'
`...`	further arguments
`maxindex`	the length of the new bitwhich vector
`poslength`	the number of selected elements
`range`	a `ri` or an integer vector of length==2 giving a range restriction for chunked processing

Value

a value of class bitwhich

Methods (by class)

NULL: method to coerce to bitwhich (zero length) from NULL
bitwhich: method to coerce to bitwhich from bitwhich
which: method to coerce to bitwhich from which
ri: method to coerce to bitwhich from ri
integer: method to coerce to bitwhich from integer (0 and NA become FALSE, everthing else becomes TRUE)
double: method to coerce to bitwhich from double (0 and NA become FALSE, everthing else becomes TRUE)
logical: method to coerce to bitwhich from logical
bit: method to coerce to bitwhich from bit

Author(s)

Jens Oehlschlägel

Examples

as.bitwhich(c(0L,1L,2L,-2L,NA))
as.bitwhich(c(0,1,2,-2,NA))

 as.bitwhich(c(NA,NA,NA))
 as.bitwhich(c(FALSE, FALSE, FALSE))
 as.bitwhich(c(FALSE, FALSE, TRUE))
 as.bitwhich(c(FALSE, TRUE, TRUE))
 as.bitwhich(c(TRUE, TRUE, TRUE))

bit

Classes and Methods for Fast Memory-Efficient Boolean Selections

v4.0.4

GPL-2 | GPL-3

Authors

Jens Oehlschlägel [aut, cre], Brian Ripley [ctb]

Initial release

2020-08-03