Select Terms in a Step Function.

terms_select() has been deprecated in favor of recipes_eval_select().

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

Usage

terms_select(terms, info, empty_fun = abort_selection)

Arguments

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.

Value

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

See also

recipe() summary.recipe() prep()

Examples

library(rlang)
library(modeldata)
data(okc)
rec <- recipe(~ ., data = okc)
info <- summary(rec)
terms_select(info = info, quos(all_predictors()))
#> Warning: `terms_select()` was deprecated in recipes 0.1.17.
#> Please use `recipes_eval_select()` instead.
#> [1] "age"      "diet"     "height"   "location" "date"     "Class"