matrix: Methods for 'matrix', 'array', 'as.matrix' and 'as.vector'

In salad: Simple Automatic Differentiation

Methods for 'matrix', 'array', 'as.matrix' and 'as.vector'

Description

Methods for 'matrix', 'array', 'as.matrix' and 'as.vector'

Usage

## S4 method for signature 'dual'
matrix(data = NA, nrow = 1, ncol = 1, byrow = FALSE, dimnames = NULL)

## S4 method for signature 'dual'
array(data = NA, dim = length(data), dimnames = NULL)

## S3 method for class 'dual'
as.matrix(x, ...)

## S4 method for signature 'dual'
as.matrix(x, ...)

## S3 method for class 'dual'
as.vector(x, mode = "any")

## S4 method for signature 'dual'
as.vector(x, mode = "any")

Arguments

data, x	A dual object
nrow	the desired number of rows
ncol	the desired number of cols
byrow	if 'TRUE' the matrix is filled by rows
dimnames	A 'dimnames' attributes for a matrix or an array
dim	A 'dim' attributes for an array
...	additional arguments (ignored)
mode	The mode of the vector to create

Details

The default behaviour for 'as.matrix' dans 'as.vector' is to drop the derivatives. This can be modified using 'salad' (to use with care). The prefered method to change the shape is to use 'dim<-'.

Value

A dual object for 'matrix' and 'array', a base object for 'as.matrix' and 'as.vector'.

See Also

shape, salad, dual-class

Examples

x <- dual(c(1,2,0,4))
y <- matrix(x, 2, 2)
y
as.matrix(y)
dim(x) <- c(2,2)
x

salad documentation built on April 4, 2025, 1:06 a.m.