`formula_HAL`

object.`R/formula_hal9001.R`

`formula_hal.Rd`

HAL Formula: Convert formula or string to `formula_HAL`

object.

`formula_hal(formula, smoothness_orders, num_knots, X = NULL)`

- formula
A

`formula_hal9001`

object as outputted by`h`

.- smoothness_orders
A default value for

`s`

if not provided explicitly to the function`h`

.- num_knots
A default value for

`k`

if not provided explicitly to the function`h`

.- X
Controls inheritance of the variable

`X`

from parent environment. When`NULL`

(the default), such a variable is inherited.