common_na_strings: Common string values for NA

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

Common string values for NA

Description

This vector contains common values of NA (missing), which is aimed to be used inside naniar functions miss_scan_count() and replace_with_na(). The current list of strings used can be found by printing out common_na_strings. It is a useful way to explore your data for possible missings, but I strongly warn against using this to replace NA values without very carefully looking at the incidence for each of the cases. Please note that common_na_strings uses ⁠\\⁠ around the "?", "." and "*" characters to protect against using their wildcard features in grep. Common NA numbers are in the data object common_na_numbers.

Usage

common_na_strings

Format

An object of class character of length 26.

Note

original discussion here https://github.com/njtierney/naniar/issues/168

Examples

dat_ms <- tibble::tribble(~x,  ~y,    ~z,
                          1,   "A",   -100,
                          3,   "N/A", -99,
                          NA,  NA,    -98,
                          -99, "E",   -101,
                          -98, "F",   -1)

miss_scan_count(dat_ms, -99)
miss_scan_count(dat_ms, c("-99","-98","N/A"))
common_na_strings
miss_scan_count(dat_ms, common_na_strings)
replace_with_na(dat_ms, replace = list(y = common_na_strings))

njtierney/naniar documentation built on July 4, 2025, 1:08 a.m.