diag {salad}

Matrix diagonals

Description

Methods extending to dual objects the corresponding methods for numeric objects.

Usage

diag.dual(x, nrow, ncol, names = TRUE)

## S4 method for signature 'dual'
diag(x = 1, nrow, ncol, names = TRUE)

## S4 replacement method for signature 'dual,dual'
diag(x) <- value

## S4 replacement method for signature 'dual,numericOrArray'
diag(x) <- value

Arguments

x

a dual object

nrow, ncol

(optional) dimensions of result

names

if 'TRUE', pass names along

value

replacement value

Value

A dual object, similarly to 'base::diag'

Examples

x <- dual( c(1,2) )
diag(x)
d(diag(x), "x1")
y <- matrix(x, 2, 2)
diag(y) <- 2*diag(y)
y
d(y)
diag(y)