recode_shadow: Add special missing values to the shadow matrix

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

Add special missing values to the shadow matrix

Description

It can be useful to add special missing values, naniar supports this with the recode_shadow function.

Usage

recode_shadow(data, ...)

## S3 method for class 'data.frame'
recode_shadow(data, ...)

## S3 method for class 'grouped_df'
recode_shadow(data, ...)

Arguments

data	data.frame
...	A sequence of two-sided formulas as in dplyr::case_when, but when a wrapper function .where written around it.

Value

a dataframe with altered shadows

Examples

df <- tibble::tribble(
~wind, ~temp,
-99,    45,
68,    NA,
72,    25
)

dfs <- bind_shadow(df)

dfs

recode_shadow(dfs, temp = .where(wind == -99 ~ "bananas"))

recode_shadow(dfs,
              temp = .where(wind == -99 ~ "bananas")) %>%
recode_shadow(wind = .where(wind == -99 ~ "apples"))

njtierney/narnia documentation built on March 17, 2024, 1:06 p.m.