plot.coords {wnominate} | R Documentation |
W-NOMINATE Coordinate Plot
Description
plot.coords
reads a W-NOMINATE object in 2 user-specified dimensions
and plots the coordinates of each member, applying separate colors and shapes
to each party by default. A unit circle is included to emphasize the
constraints on the W-NOMINATE coordinates, and options to select non-party
attributes of legislators are included. For a 1D W-WNOMINATE object,
W-NOMINATE scores are plotted against their ranks.
Usage
## S3 method for class 'coords'
plot(x, main.title="W-NOMINATE Coordinates",
d1.title="First Dimension", d2.title="Second Dimension", dims=c(1,2),
plotBy="party", color=TRUE, shape=TRUE, cutline=NULL, Legend=TRUE,
legend.x=0.8, legend.y=1, ...)
Arguments
x |
a |
main.title |
string, coordinate plot title. |
d1.title |
string, x-axis label. |
d2.title |
string, y-axis label. |
dims |
vector of length 2, specifying the dimensions to be plotted. |
plotBy |
string, name of a variable in |
color |
logical, marks different groups specified by |
shape |
logical, marks different groups specified by |
cutline |
vector, selects roll calls by row number for which a cutting line is desired. |
Legend |
logical, include a generic legend. |
legend.x |
numeric, corresponds to the 'x' argument of legend(). |
legend.y |
numeric, corresponds to the 'y' argument of legend(). |
... |
other arguments to |
Value
A coordinate plot.
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.scree', '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.coords(sen90wnom)
plot(sen90wnom)