declared (version 0.25)

is.empty: Test the presence of empty (undeclared) missing values

Description

Functions that indicate which elements are empty NA missing values, in contrast to declared missing values.

Usage

is.empty(x)
anyNAempty(x)

Value

A logical vector.

Arguments

x

A vector

Details

All missing values, declared or undeclared, as stored as regular NA values, therefore the base function is_na() does not differentiate between them.

These functions are specifically adapted to objects of class "declared", to return a truth value only for those elements that are completely missing with no reason.

Examples

x <- declared(
    c(1:2, -91),
    labels = c(Good = 1, Bad = 2, Missing = -91),
    na_values = -91
)

x

is.empty(x) # FALSE FALSE FALSE

anyNAempty(x) # FALSE

x <- c(x, NA)

is.empty(x) # FALSE FALSE FALSE  TRUE

anyNAempty(x) # TRUE