R: Produce a Design Matrix from a 'mars' Object

model.matrix.mars {mda} | R Documentation

## Produce a Design Matrix from a ‘mars’ Object

### Description

Produce a design matrix from a ‘mars’ object.

### Usage

    ## S3 method for class 'mars'
    model.matrix(object, x, which, full = FALSE, ...)

### Arguments

`object` | a mars object.
`x` | optional argument; if supplied, the mars basis functions are evaluated at these new observations.
`which` | which columns should be used. The default is to use the columns described by the component `selected.terms` on `object`.
`full` | if `TRUE` the entire set of columns are selected, even redundant ones. This is used for updating a mars fit.
`...` | further arguments to be passed from or to methods.

### Value

A model matrix corresponding to the selected columns.

### See Also

`mars`, `predict.mars`

[Package mda version 0.5-2 Index]