# gcv.l1ce

##### `gcv()' Methods for `l1ce' and `l1celist' Objects.

This is a method for the function `gcv()`

for objects inheriting
from class `l1ce`

or `l1celist`

.

- Keywords
- models

##### Usage

```
# S3 method for l1ce
gcv(object, type = c("OPT", "Tibshirani"),
gen.inverse.diag = 0, …)
# S3 method for l1celist
gcv(object, type = c("OPT", "Tibshirani"),
gen.inverse.diag = 0, …)
```

##### Arguments

- object
an object of class

`l1ce`

or`l1celist`

.- type
character (string) indicating whether to use the covariance formula of Osborne, Presnell and Turlach or the formula of Tibshirani.

- gen.inverse.diag
if Tibshirani's formula for the covariance matrix is used, this value is used for the diagonal elements of the generalised inverse that appears in the formula that corresponds to parameters estimated to be zero. The default is 0, i.e. use the Moore-Penrose inverse. Tibshirani's code uses

`gen.inverse.diag = 1e11`

.- …
further potential arguments passed to methods.

##### Details

See documentation.

##### See Also

`gcv`

for the general behavior of this function;
`l1ce.object`

and `l1celist.object`

for
description of the `object`

argument.

*Documentation reproduced from package lasso2, version 1.2-20, License: GPL (>= 2)*