matrix.dual: Coerce the first component of the dual object into a matrix.
In kcf-jackson/ADtools: Automatic Differentiation Toolbox

Coerce the first component of the dual object into a matrix.

## S3 method for class 'dual'
matrix(data, nrow, ncol = 1, byrow = FALSE, dimnames = NULL)

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

`data`	A "dual" object.
`nrow`	a positive integer; the desired number of rows.
`ncol`	a positive integer; the desired number of rows.
`byrow`	TRUE or FALSE; whether to fill the matrix by rows.
`dimnames`	A dimnames attribute for the matrix: NULL or a list of length 2 giving the row and column names respectively. An empty list is treated as NULL, and a list of length one as row names. The list can be named, and the list names will be used as names for the dimensions.