An S4 class to represent a permutation order.
# S4 method for PermutationOrder
[[(x, i)# S4 method for PermutationOrder
rows(x)
# S4 method for PermutationOrder
columns(x)
# S4 method for PermutationOrder
method(x)
A PermutationOrder object from which to extract element(s).
A character string specifying elements to extract.
Character vectors will be matched to the name of the slots.
[[: Returns information about the individual slots.
rows: Returns the rows permutation.
columns: Returns the columns permutation.
method: Returns the method used for seriation.