recipes (version 0.1.0)

step_shuffle: Shuffle Variables

Description

step_shuffle creates a specification of a recipe step that will randomly change the order of rows for selected variables.

Usage

step_shuffle(recipe, ..., role = NA, trained = FALSE, columns = NULL)

Arguments

recipe

A recipe object. The step will be added to the sequence of operations for this recipe.

...

One or more selector functions to choose which variables will permuted. See selections for more details.

role

Not used by this step since no new variables are created.

trained

A logical to indicate if the quantities for preprocessing have been estimated.

columns

A character string that contains the names of columns that should be shuffled. These values are not determined until prep.recipe is called.

Value

An updated version of recipe with the new step added to the sequence of existing steps (if any).

Examples

# NOT RUN {
integers <- data.frame(A = 1:12, B = 13:24, C = 25:36)

library(dplyr)
rec <- recipe(~ A + B + C, data = integers) %>%
  step_shuffle(A, B)

rand_set <- prep(rec, training = integers)

set.seed(5377)
bake(rand_set, integers)
# }