# keyring-class: Class keyring In planor: Generation of Regular Factorial Designs

## 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``` ```showClass("keyring") ### Creation of a listofkeyrings object K0 <- planor.designkey(factors=c("block", LETTERS[1:4]), nlevels=rep(3,5), model=~block+(A+B+C+D)^2, estimate=~A+B+C+D, nunits=3^3, base=~A+B+C, max.sol=2) ### Show a keyring component of K0 show(K0[[1]]) ```

planor documentation built on June 2, 2017, 5:02 p.m.