update.pp_tree: Update a 'pp_tree' model specification.

In ppforest2: Projection Pursuit Oblique Decision Trees and Random Forests

Update a pp_tree model specification.

Description

Companion to update.pp_rand_forest — exists for the same reason (tune::tune_grid() relies on update() to finalise the spec at each grid point).

Usage

## S3 method for class 'pp_tree'
update(object, parameters = NULL, penalty = NULL, fresh = FALSE, ...)

Arguments

object	A pp_tree model specification.
parameters	A named list of parameters to update (alternative to passing them as args).
penalty	A new value for the regularisation parameter.
fresh	If TRUE, drop any previously-set arg whose new value is not provided.
...	Engine-specific arguments to update.

Value

An updated pp_tree model specification.

ppforest2 documentation built on July 21, 2026, 9:07 a.m.