as.which.which: Coercion to (positive) integer positions

Description

Coercing to something like the result of which which()

Usage

# S3 method for which
as.which(x, maxindex = NA_integer_, ...)
# S3 method for `NULL`
as.which(x, ...)
# S3 method for numeric
as.which(x, maxindex = NA_integer_, ...)
# S3 method for integer
as.which(x, maxindex = NA_integer_, is.unsorted = TRUE, has.dup = TRUE, ...)
# S3 method for logical
as.which(x, ...)
# S3 method for ri
as.which(x, ...)
# S3 method for bit
as.which(x, range = NULL, ...)
# S3 method for bitwhich
as.which(x, ...)
as.which(x, ...)

Value

a vector of class 'logical' or 'integer'

Arguments

x: an object of classes bit(), bitwhich(), ri() or something on which which() works
maxindex: the length of the boolean vector which is represented
...: further arguments (passed to which() for the default method, ignored otherwise)
is.unsorted: a logical scalar indicating whether the data may be unsorted
has.dup: a logical scalar indicating whether the data may have duplicates
range: a ri() or an integer vector of length == 2 giving a range restriction for chunked processing

Methods (by class)

as.which(which): method to coerce to which() from which()
as.which(`NULL`): method to coerce to zero length which() from NULL
as.which(numeric): method to coerce to which() from numeric()
as.which(integer): method to coerce to which() from integer()
as.which(logical): method to coerce to which() from logical()
as.which(ri): method to coerce to which() from ri()
as.which(bit): method to coerce to which() from bit()
as.which(bitwhich): method to coerce to which() from bitwhich()

Author

Jens Oehlschlägel

Details

as.which.bit returns a vector of subscripts with class 'which'

Examples

Run this code


  r <- ri(5, 20, 100)
  x <- as.which(r)
  x

  stopifnot(identical(x, as.which(as.logical(r))))
  stopifnot(identical(x, as.which(as.bitwhich(r))))
  stopifnot(identical(x, as.which(as.bit(r))))

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