replace_na_with: Replace NA value with provided value

In njtierney/naniar: Data Structures, Summaries, and Visualisations for Missing Data

Replace NA value with provided value

Description

This function helps you replace NA values with a single provided value. This can be classed as a kind of imputation, and is powered by impute_fixed(). However, we would generally recommend to impute using other model based approaches. See the simputation package, for example simputation::impute_lm(). See tidyr::replace_na() for a slightly different approach, dplyr::coalesce() for replacing NAs with values from other vectors, and dplyr::na_if() to replace specified values with NA.

Usage

replace_na_with(x, value)

Arguments

x	vector
value	value to replace

Value

vector with replaced values

Examples

library(naniar)
x <- c(1:5, NA, NA, NA)
x
replace_na_with(x, 0L)
replace_na_with(x, "unknown")

library(dplyr)
dat <- tibble(
  ones = c(NA,1,1),
  twos = c(NA,NA, 2),
  threes = c(NA, NA, NA)
)

dat

dat %>%
  mutate(
    ones = replace_na_with(ones, 0),
    twos = replace_na_with(twos, -99),
    threes = replace_na_with(threes, "unknowns")
  )

dat %>%
  mutate(
    across(
      everything(),
      \(x) replace_na_with(x, -99)
    )
  )

njtierney/naniar documentation built on March 19, 2024, 9:48 p.m.