plot.skree {wnominate}R Documentation

W-NOMINATE Skree Plot

Description

plot.skree is the function that takes a W-NOMINATE object and plots a Skree plot. Skree plots show the dimensionality of the voting by showing the sizes of the eigenvalues.

Usage

plot.skree(x, main.title="Skree Plot", x.title="Dimension",
        y.title="Eigenvalue",...)

Arguments

x a wnominate output object.
main.title string, Skree plot title.
x.title string, x-axis label.
y.title string, y-axis label.
... other arguments to plot.

Value

A Skree plot, showing the first 20 eigenvalues.

Author(s)

Keith Poole kpoole@ucsd.edu

Jeffrey Lewis jblewis@ucla.edu

James Lo jameslo@ucla.edu

Royce Carroll rcarroll@ucsd.edu

See Also

'wnominate', 'plot.coords', 'plot.cutlines', 'plot.angles', 'plot.nomObject'

Examples

    #This data file is the same as that obtained using:
    #data(sen90)
    #sen90wnom<-wnominate(sen90,polarity=c(2,5))
    data(sen90wnom)

    summary(sen90wnom)
    plot.skree(sen90wnom)
    plot(sen90wnom)

[Package wnominate version 0.94 Index]