zipfR (version 0.6-70)

spc.vector: Create Vector of Spectrum Elements (zipfR)

Description

spc.vector returns a selected range of elements from a frequency spectrum as a plain numeric vector (which may contain entries with \(V_m = 0\), unlike the spc object itself).

Usage

spc.vector(obj, m.min=1, m.max=15, all=FALSE)

Arguments

obj

an object of class spc, representing an observed or expected frequency spectrum

m.min, m.max

determine the range of frequency classes to be returned (defaulting to 1 … 15)

all

if TRUE, a vector containing the entire frequency spectrum is returned, i.e. m.max is set to max(obj$m). Note that the value of m.min can still be overridden manually to return only part of the spectrum.

Value

A numeric vector with the selected elements of the frequency spectrum. In this vector, empty frequency classes (\(V_m = 0\)) are represented by 0 entries (unlike the spc object, which omits all empty classes).

Details

spc.vector(obj, a, b) is fully equivalent to Vm(obj, a:b) (and is implemented in this way).

See Also

spc for more information about spc objects and links to relevant functions

Vm.spc for an alternative way of extracting spectrum vectors from a .spc object, and N.spc, V.spc, VV.spc, VVm.spc for extracting related information

Examples

# NOT RUN {
## Brown Noun spectrum
data(BrownNoun.spc)

## by default, extract first 15 elements
spc.vector(BrownNoun.spc)

## first five elements
spc.vector(BrownNoun.spc,1,5)

## just frequencies of spc elements 4 and 5 
spc.vector(BrownNoun.spc,4,5)
## same as
Vm(BrownNoun.spc,4:5)

# }