tests/testthat/_snaps/lag.md

In tidymodels/recipes: Preprocessing and Feature Engineering Steps for Modeling

default lag works on a single feature

Code
  prepped_rec <- recipe(~., data = df) %>% step_lag(x, lag = 0.5) %>% prep(df)
Condition
  Error in `step_lag()`:
  Caused by error in `prep()`:
  ! `lag` argument must be integer-valued, not a function.

Code
  recipe(~., data = df) %>% step_lag(x, prefix = 2) %>% prep()
Condition
  Error in `step_lag()`:
  Caused by error in `prep()`:
  ! `prefix` must be a single string, not the number 2.

bake method errors when needed non-standard role columns are missing

Code
  bake(rec, new_data = df[, 1, drop = FALSE])
Condition
  Error in `step_lag()`:
  ! The following required column is missing from `new_data`: t.

empty printing

Code
  rec
Message

  -- Recipe ----------------------------------------------------------------------

  -- Inputs 
  Number of variables by role
  outcome:    1
  predictor: 10

  -- Operations 
  * Lagging: <none>

Code
  rec
Message

  -- Recipe ----------------------------------------------------------------------

  -- Inputs 
  Number of variables by role
  outcome:    1
  predictor: 10

  -- Training information 
  Training data contained 32 data points and no incomplete rows.

  -- Operations 
  * Lagging: <none> | Trained

keep_original_cols - can prep recipes with it missing

Code
  rec <- prep(rec)
Condition
  Warning:
  `keep_original_cols` was added to `step_lag()` after this recipe was created.
  i Regenerate your recipe to avoid this warning.

printing

Code
  print(rec)
Message

  -- Recipe ----------------------------------------------------------------------

  -- Inputs 
  Number of variables by role
  predictor: 11

  -- Operations 
  * Lagging: disp

Code
  prep(rec)
Message

  -- Recipe ----------------------------------------------------------------------

  -- Inputs 
  Number of variables by role
  predictor: 11

  -- Training information 
  Training data contained 32 data points and no incomplete rows.

  -- Operations 
  * Lagging: disp | Trained

tidymodels/recipes documentation built on Jan. 25, 2025, 7:30 a.m.