An S4 class to represent a permutation order.
id
A character
string specifying the unique
identifier of the corresponding matrix (UUID v4).
rows
An integer
vector giving the rows permutation.
columns
An integer
vector giving the columns permutation.
method
A character
string indicating the seriation
method used.
x[[i]]
Extracts informations from a slot selected by
subscript i
. i
should be one of "id
",
"rows
", "columns
" or "method
". Any unambiguous
substring can be given.