length-SPV-method: Selections Pseudo-Vector Length

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

Description

Get the length of an SPV instance.

Usage

## S4 method for signature 'SPV'
length(x)

Arguments

x	an instance of SPV

Details

Since x contains all the k-selections of objects in vector items, length(x) will return choose(length(items) + k - 1, k).

Value

the number of selections (combinations with replacement) in pseudo-vector x

See Also

Permutations Pseudo-Vector ppv

Combinations Pseudo-Vector cpv

Amalgams Pseudo-Vector apv

Subsets Pseudo-Vector sspv

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