grid.md
In tune: Tidy Tuning Tools

tune model only - failure in recipe is caught elegantly

Code
  cars_res <- tune_grid(helper_objects$svm_mod, preprocessor = rec, resamples = data_folds,
  grid = cars_grid, control = control_grid(extract = function(x) {
    1
  }, save_pred = TRUE))
Message
  > A | error:   Error in `step_spline_b()`:
                 Caused by error in `prep()`:
                 ! `deg_free` must be a whole number, not a numeric `NA`.
Condition
  Warning:
  All models failed. Run `show_notes(.Last.tune.result)` for more information.

tune model only - failure in formula is caught elegantly

Code
  cars_res <- tune_grid(helper_objects$svm_mod, y ~ z, resamples = data_folds,
  grid = cars_grid, control = control_grid(extract = function(x) {
    1
  }, save_pred = TRUE))
Message
  > A | error:   The following predictor was not found in `data`: "z".
Condition

argument order gives errors for recipes

Code
  tune_grid(helper_objects$rec_tune_1, helper_objects$lm_mod, rsample::vfold_cv(
    mtcars, v = 2))
Condition
  Error in `tune_grid()`:
  ! The first argument to `tune_grid()` should be either a model or workflow, not a <recipe> object.

argument order gives errors for formula

Code
  tune_grid(mpg ~ ., helper_objects$lm_mod, rsample::vfold_cv(mtcars, v = 2))
Condition
  Error in `tune_grid()`:
  ! The first argument to `tune_grid()` should be either a model or workflow, not a <formula> object.

ellipses with tune_grid

Code
  tune_grid(wflow, resamples = folds, grid = 3, something = "wrong")
Condition
  Warning:
  The `...` are not used in this function but 1 object was passed: "something"
Output
  # Tuning results
  # 10-fold cross-validation 
  # A tibble: 10 x 4
     splits         id     .metrics         .notes          
     <list>         <chr>  <list>           <list>          
   1 <split [28/4]> Fold01 <tibble [6 x 5]> <tibble [0 x 4]>
   2 <split [28/4]> Fold02 <tibble [6 x 5]> <tibble [0 x 4]>
   3 <split [29/3]> Fold03 <tibble [6 x 5]> <tibble [0 x 4]>
   4 <split [29/3]> Fold04 <tibble [6 x 5]> <tibble [0 x 4]>
   5 <split [29/3]> Fold05 <tibble [6 x 5]> <tibble [0 x 4]>
   6 <split [29/3]> Fold06 <tibble [6 x 5]> <tibble [0 x 4]>
   7 <split [29/3]> Fold07 <tibble [6 x 5]> <tibble [0 x 4]>
   8 <split [29/3]> Fold08 <tibble [6 x 5]> <tibble [0 x 4]>
   9 <split [29/3]> Fold09 <tibble [6 x 5]> <tibble [0 x 4]>
  10 <split [29/3]> Fold10 <tibble [6 x 5]> <tibble [0 x 4]>