An S4 class to represent a permutation order.

`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.

Numeric values are coerced to `integer`

as by
`as.integer`

(and hence truncated towards zero).

`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.

Other class:
`BootCA-class`

,
`CA-class`

,
`DateClass`

,
`DiversityIndex`

N. Frerebeau