Names.pdBlocked function

Names of a pdBlocked Object

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.

## 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.

Returns

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 bates@stat.wisc.edu

See Also

Names, Names.pdMat

Examples

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