save_json: Save a model to a JSON file.

In ppforest2: Projection Pursuit Oblique Decision Trees and Random Forests

Save a model to a JSON file.

Description

Serializes a pptr or pprf model to JSON format compatible with the C++ CLI. The JSON includes the model structure, group labels, training parameters, and optionally variable importance metrics.

Usage

save_json(model, path, ...)

## S3 method for class 'ppmodel'
save_json(model, path, include_metrics = TRUE, ...)

Arguments

model	A pptr or pprf model (inheriting from ppmodel).
path	File path to write the JSON to.
...	Additional arguments (currently unused).
include_metrics	If TRUE (default), include variable importance and (for forests) OOB error in the output. Set to FALSE to save only the model structure and metadata.

Value

Invisibly returns the file path that was written (a length-one character string). Called for its side effect of serializing model to a JSON file at path.

See Also

load_json, pptr, pprf

Examples

model <- pptr(Species ~ ., data = iris, seed = 0)
path <- tempfile(fileext = ".json")
save_json(model, path)

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