to_factor: Convert vector but keep value/value labels.

In shug0131/cctu: In-house Functions for Report Writing at Cambridge Clinical Trials Unit

Convert vector but keep value/value labels.

Description

Convert vector but keep value/value labels.

to_factor convert vector to factor with corresponding value labels or unique values in the vector. Note that the 'NA' or blank values will be excluded from converting. It will return a factor with original values if there's no value label.

to_character Convert vector to character vector and keep the variable labels. The generic function 'as.character' will lost the label attributes. If you want to convert the value label to value itself, use lab2val instead.

to_numeric Convert vector to numeric vector and keep the variable labels. The generic function 'as.numeric' will lost the label attributes.

to_logical Convert vector to logical vector and keep the variable labels. The generic function 'as.logical' will lost the label attributes.

Usage

to_factor(x, ordered = TRUE, drop.levels = FALSE)

to_character(x)

to_numeric(x)

to_logical(x)

Arguments

x	vector
ordered	logical flag to determine if the levels should be regarded as ordered.
drop.levels	If 'TRUE', drop unused levels from the converted factor, default is 'FALSE'.

Value

Factor/character of the same form as x but with value labels instead of values. For numeric and logical vectors with corresponding type.

See Also

val_lab, var_lab

Examples

data(mtcars)
mtcars = within(mtcars,{
                var_lab(am) = "Transmission"
                val_lab(am) = c(" automatic" = 0, " manual" =  1)
})

mtcars$am <- to_factor(mtcars$am)
mtcars$gear <- to_character(mtcars$gear)

shug0131/cctu documentation built on Nov. 10, 2023, 12:03 p.m.