plot.scree {wnominate} | R Documentation |
W-NOMINATE Scree Plot
Description
plot.scree
is the function that takes a W-NOMINATE object and plots a Scree plot.
Scree plots show the dimensionality of the voting by showing the sizes of the eigenvalues.
Usage
## S3 method for class 'scree'
plot(x, main.title="Scree Plot", x.title="Dimension",
y.title="Eigenvalue", ...)
Arguments
x |
a |
main.title |
string, Skree plot title. |
x.title |
string, x-axis label. |
y.title |
string, y-axis label. |
... |
other arguments to |
Value
A Scree plot, showing the first 20 eigenvalues.
Author(s)
Keith Poole ktpoole@uga.edu
Jeffrey Lewis jblewis@ucla.edu
James Lo lojames@usc.edu
Royce Carroll rcarroll@rice.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.scree(sen90wnom)
plot(sen90wnom)
[Package wnominate version 1.5 Index]