sjmisc (version 1.8)

get_na_flags: Retrieve missing value flags of labelled variables

Description

This function retrieves the logical missing flags for a labelled variable.

Usage

get_na_flags(x)

Arguments

x

Variable (vector) with value label attributes, including missing value codes (see labelled).

Value

Logical vector with missing flags that indicate which labelled value is considered as missing.

Details

See 'Details' in get_na.

See Also

get_na to get value codes of labelled missing values; get_values to get values associated with labels; see set_na to replace specific values with NA and to_na to convert missing value codes into NA.

Examples

# create labelled integer, with missing flag
x <- labelled(c(1, 2, 1, 3, 4, 1),
              c(Male = 1, Female = 2, Refused = 3, "N/A" = 4),
              c(FALSE, FALSE, TRUE, TRUE))
get_na_flags(x)