# Class keyring

### Description

An S4 class to represent a list of design-key matrices which are associated with the same prime and which represent alternative solutions to the same design specifications.

### Objects from the Class

Each component of the structure
returned by `planor.designkey`

is a `keyring`

object when the
case is not recursive.

### Slots

- .Data
a list of

`keymatrix`

objects.- p
a prime number.

- LIB
a list containing a vector of row names and a vector of column names. The names are the same for all key matrices.

- pseudo.info
a dataframe containing information on the pseudofactors associated with the key matrices. See the description of the class

`designfactors`

.

### Extends

Class `list`

, from data part.
Class `vector`

, by class list, distance 2.

### Methods

- show
display the object. See

`show`

method.- summary
summarize the design properties. See

`summary`

method.

### Note

Each key matrix in a `keyring`

object is a possible solution
to the same factors, model and estimate specifications, with respect
to the same prime number. An object of class
`listofkeyrings`

is a list of `keyring`

objects associated with the different primes involved in a given
factorial design problem.

### Author(s)

Monod, H. and Bouvier, A.

### See Also

`planor.designkey`

,
methods `pick.listofkeyrings`

and
`summary.keymatrix`

, the class `keyring`

### Examples

1 2 3 4 5 6 7 |