sub-CPV-method: Retrieve a Combination by Index

In trotter: Pseudo-Vectors Containing All Permutations, Combinations and Subsets of Objects Taken from a Vector.

Description

Access a combination stored in a CPV instance by index.

Usage

## S4 method for signature 'CPV'
x[i, j, drop]

Arguments

x	an instance of CPV.
i	an index specifying the position of the sought combination.
j	not used.
drop	not used.

Details

The combination at index i of pseudo-vector x is not actually stored in memory but calculated as needed. The extract method is used solely for interpretation.

Value

the combination located at position i in pseudo-vector x

See Also

Permutations Pseudo-Vector ppv

Amalgams Pseudo-Vector apv

Selections Pseudo-Vector spv

Subsets Pseudo-Vector sspv

trotter documentation built on May 2, 2019, 1:27 p.m.