REDCapCAST/man/as_factor.Rd

77 lines
2.0 KiB
R

% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/as_factor.R
\name{as_factor}
\alias{as_factor}
\alias{as_factor.factor}
\alias{as_factor.logical}
\alias{as_factor.numeric}
\alias{as_factor.character}
\alias{as_factor.haven_labelled}
\alias{as_factor.labelled}
\title{Convert labelled vectors to factors while preserving attributes}
\usage{
as_factor(x, ...)
\method{as_factor}{factor}(x, ...)
\method{as_factor}{logical}(x, ...)
\method{as_factor}{numeric}(x, ...)
\method{as_factor}{character}(x, ...)
\method{as_factor}{haven_labelled}(
x,
levels = c("default", "labels", "values", "both"),
ordered = FALSE,
...
)
\method{as_factor}{labelled}(
x,
levels = c("default", "labels", "values", "both"),
ordered = FALSE,
...
)
}
\arguments{
\item{x}{Object to coerce to a factor.}
\item{...}{Other arguments passed down to method.}
\item{levels}{How to create the levels of the generated factor:
* "default": uses labels where available, otherwise the values.
Labels are sorted by value.
* "both": like "default", but pastes together the level and value
* "label": use only the labels; unlabelled values become `NA`
* "values": use only the values}
\item{ordered}{If `TRUE` create an ordered (ordinal) factor, if
`FALSE` (the default) create a regular (nominal) factor.}
}
\description{
This extends [forcats::as_factor()] as well as [haven::as_factor()], by appending
original attributes except for "class" after converting to factor to avoid
ta loss in case of rich formatted and labelled data.
}
\details{
Please refer to parent functions for extended documentation.
To avoid redundancy calls and errors, functions are copy-pasted here
}
\examples{
# will preserve all attributes
c(1, 4, 3, "A", 7, 8, 1) |> as_factor()
structure(c(1, 2, 3, 2, 10, 9),
labels = c(Unknown = 9, Refused = 10)
) |>
as_factor() |>
dput()
structure(c(1, 2, 3, 2, 10, 9),
labels = c(Unknown = 9, Refused = 10),
class = "haven_labelled"
) |>
as_factor()
}