recipes: terms_select – R documentation

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terms_select

Select Terms in a Step Function.

This function bakes the step function selectors and might be useful when creating custom steps.

terms_select(terms, info, empty_fun = abort_selection)

`terms`	A list of formulas whose right-hand side contains quoted expressions. See `rlang::quos()` for examples.
`info`	A tibble with columns `variable`, `type`, `role`, and `source` that represent the current state of the data. The function `summary.recipe()` can be used to get this information from a recipe.
`empty_fun`	A function to execute when no terms are selected by the step. The default function throws an error with a message.

A character string of column names or an error of there are no selectors or if no variables are selected.

library(rlang)
library(modeldata)
data(okc)
rec <- recipe(~ ., data = okc)
info <- summary(rec)
terms_select(info = info, quos(all_predictors()))

Preprocessing Tools to Create Design Matrices

v0.1.16

MIT + file LICENSE

Authors

Max Kuhn [aut, cre], Hadley Wickham [aut], RStudio [cph]

Initial release