interpret.gam {mgcv} | R Documentation |

## Interpret a GAM formula

### Description

This is an internal function of package `mgcv`

. It is a service routine for
`gam`

which splits off the strictly parametric part of the model formula, returning
it as a formula, and interprets the smooth parts of the model formula.

Not normally called directly.

### Usage

`interpret.gam(gf, extra.special = NULL)`

### Arguments

`gf` |
A GAM formula as supplied to |

`extra.special` |
Name of any extra special in formula in addition to |

### Value

An object of class `split.gam.formula`

with the following items:

`pf` |
A model formula for the strictly parametric part of the model. |

`pfok` |
TRUE if there is a |

`smooth.spec` |
A list of class |

`full.formula` |
An expanded version of the model formula in which the options are fully expanded, and the options do not depend on variables which might not be available later. |

`fake.formula` |
A formula suitable for use in evaluating a model frame. |

`response` |
Name of the response variable. |

### Author(s)

Simon N. Wood simon.wood@r-project.org

### References

https://www.maths.ed.ac.uk/~swood34/

### See Also

*mgcv*version 1.9-1 Index]