R: Break up matrix terms

break_up_matrix_term {projpred} | R Documentation

## Break up matrix terms

### Description

Sometimes there can be terms in a formula that refer to a matrix instead of a single predictor. This function breaks up the matrix term into individual predictors to handle separately, as that is probably the intention of the user.

### Usage

    break_up_matrix_term(formula, data)

### Arguments

`formula` | A `formula` for a valid model.
`data` | The original `data.frame` with a matrix as predictor.

### Value

A `list` containing the expanded `formula` and the expanded `data.frame`.

[Package projpred version 2.1.1 Index]