contr.earth.response {earth} | R Documentation |

## Please ignore

### Description

Contrasts function for factors in the `earth`

response.
For internal use by earth.

### Usage

```
contr.earth.response(x, base, contrasts)
```

### Arguments

`x` |
a factor |

`base` |
unused |

`contrasts` |
unused |

### Value

Returns a diagonal matrix.
An example for a 3 level factor with levels `A`

, `B`

, and `C`

:

A B C A 1 0 0 B 0 1 0 C 0 0 1

### Note

Earth uses this function internally.
You shouldn't need it.
It is made publicly available only because it seems that is necessary
for `model.matrix`

.

### See Also

[Package

*earth*version 5.3.3 Index]