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Recode
Cghlewis edited this page Mar 18, 2024
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These are functions used for recoding values. Recoding often happens in situations such as:
- Research scales need to be reverse coded for scoring
- NA values need to be recoded
- A value was coded wrong in a survey and needs to be recoded
- A character variable needs to be recoded into a numeric variable
- Survey participants were allowed to write in responses to a question and similar responses need to be collapsed into the same categories in order to standardize your variable
- Several response categories need to be collapsed into a smaller number of categories
- A multiple choice question needs to be scored to correct or incorrect
- Recode values for one variable
- Recode factors
- Recode dates
- Recode same values for multiple variables
- Reverse code values
- Recode NA
Main functions used in examples
| Package | Functions |
|---|---|
| dplyr | recode(); recode_factor(); case_when(); na_if(); if_else() |
| tidyr | replace_na() |
| gendercoder | recode_gender() |
| forcats | fct_recode() |
Other functions used in examples
| Package | Functions |
|---|---|
| dplyr | mutate(); across(); if_any(); if_all(); rename_with(); tolower(); filter(); select() |
| base | as.numeric(); levels(); paste0(); table(); is.numeric() |
| janitor | tabyl() |
| stringr | str_detect(); regex() |
| labelled | val_labels() |
| tidyselect | everything(); all_of() |
| purrr | map() |
| tibble | deframe() |
Resources