Names.pdBlocked {nlme}

Names of a pdBlocked Object

Description

This method function extracts the first element of the Dimnames attribute, which contains the column names, for each block diagonal element in the matrix represented by object.

Usage

## S3 method for class 'pdBlocked'
Names(object, asList, ...)

Arguments

object

an object inheriting from class "pdBlocked" representing a positive-definite matrix with block diagonal structure

asList

a logical value. If TRUE a list with the names for each block diagonal element is returned. If FALSE a character vector with all column names is returned. Defaults to FALSE.

...

some methods for this generic require additional arguments. None are used in this method.

Value

if asList is FALSE, a character vector with column names of the matrix represented by object; otherwise, if asList is TRUE, a list with components given by the column names of the individual block diagonal elements in the matrix represented by object.

Author(s)

José Pinheiro and Douglas Bates [e-mail]

See Also

Names, Names.pdMat

Examples

pd1 <- pdBlocked(list(~Sex - 1, ~age - 1), data = Orthodont)
Names(pd1)