LC1980 {basicspace}  R Documentation 
LiberalConservative 7point scales from the 1980 National Election Study. Includes (in order) selfplacement, and rankings of Carter, Reagan, Kennedy, Anderson, Republican party, Democratic Party. Stored as a matrix of integers. The numbers 0, 8, and 9 are considered to be missing values.
data(LC1980)
The data is formatted as an integer matrix with the following elements.
LC1980 
matrix, containing reported placements of various stimuli on a 7 point LiberalConservative scale:

Keith Poole ktpoole@uga.edu
Howard Rosenthal hr31@nyu.edu
Jeffrey Lewis jblewis@ucla.edu
James Lo lojames@usc.edu
Royce Carroll rcarroll@rice.edu
American national Election Study. http://www.electionstudies.org/
Also availble from Keith Poole. http://voteview.com
'aldmck', 'summary.aldmck', 'plot.aldmck', 'plot.cdf'.
### Loads and scales the LiberalConservative scales from the 1980 NES.
data(LC1980)
result < aldmck(data=LC1980, polarity=2, respondent=1, missing=c(0,8,9),verbose=TRUE)
summary(result)
par(ask=TRUE)
plot.AM(result,xlim=c(1.5,1.5))
plot.cdf(result)