offset {stats} | R Documentation |

## Include an Offset in a Model Formula

### Description

An offset is a term to be added to a linear predictor, such as in a
generalised linear model, with known coefficient 1 rather than an
estimated coefficient.

### Usage

offset(object)

### Arguments

`object` |
An offset to be included in a model frame |

### Details

There can be more than one offset in a model formula, but `-`

is
not supported for `offset`

terms (and is equivalent to `+`

).

### Value

The input value.

### See Also

`model.offset`

, `model.frame`

.

For examples see `glm`

and
`Insurance`

in package **MASS**.

[Package

*stats* version 2.5.0

Index]