classified.classified: Create Classified from Classified

In yamlet: Versatile Curation of Table Metadata

Create Classified from Classified

Description

See classified.default. Formerly (version 0.10.10), calling classified() on a classified object was a non-operation. Currently we call factor(x, ...) and then try to reconcile the codelist attribute with resulting levels.

Usage

## S3 method for class 'classified'
classified(
  x,
  levels,
  labels,
  exclude = NULL,
  ordered = is.ordered(x),
  nmax = NA,
  drop = FALSE,
  ...
)

Arguments

x	classified
levels	passed to factor; defaults to levels(x)
labels	passed to factor; must be same length as levels(after removing values in exclude and unused levels if drop is TRUE) and must not contain duplicates
exclude	passed to factor
ordered	passed to factor
nmax	passed to factor
drop	whether to drop unused levels
...	ignored

Details

By default classified is idempotent, such that classified(classified(x)) is the same as classified(x). In contrast, factor(factor(x)) will drop unused levels (not shown). To drop unused levels, use classified(classified(x), drop = TRUE).

Value

'classified' 'factor'

See Also

Other classified: [.classified(), [<-.classified(), [[.classified(), [[<-.classified(), as.integer.classified(), c.classified(), classified(), classified.data.frame(), classified.default(), classified.dvec(), classified.factor(), desolve.classified(), unclassified(), unclassified.classified(), unclassified.data.frame()

Examples

a <- 4:6
attr(a, 'codelist') <- list(d = 4, e = 5, f = 6, g = 7)
b <- classified(a)
a
b
class(b)
classified(b)
identical(b, classified(b))

yamlet documentation built on June 8, 2025, 1:57 p.m.