step_rm {recipes} | R Documentation |
step_rm
creates a specification of a recipe step that will
remove variables based on their name, type, or role.
step_rm(recipe, ..., role = NA, trained = FALSE, removals = NULL)
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 that
will evaluated by the filtering bake. See |
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. |
removals |
A character string that contains the names of columns that
should be removed. These values are not determined until
|
An updated version of recipe
with the
new step added to the sequence of existing steps (if any).
data(biomass) biomass_tr <- biomass[biomass$dataset == "Training",] biomass_te <- biomass[biomass$dataset == "Testing",] rec <- recipe(HHV ~ carbon + hydrogen + oxygen + nitrogen + sulfur, data = biomass_tr) library(dplyr) smaller_set <- rec %>% step_rm(contains("gen")) smaller_set <- prep(smaller_set, training = biomass_tr) filtered_te <- bake(smaller_set, biomass_te) filtered_te