This dataframe contains a matrix of votes cast by U.S. Senators
in the 90th Congress. The data are formatted consistent with the
rollcall object format in Simon Jackman's pscl package.
Usage
data(sen90)
Value
The dataframe contains roll call data for all Senators in the 90th Senate.
The data is formatted as a rollcall object with the following elements.
votes
data frame, containing all data from the old nom31.dat file about
legislators. For a typical W-NOMINATE object run with an ORD file read using
readKH, it will contain the following:
state State name of legislator.
icpsrState ICPSR state code of legislator.
cd Congressional District number.
icpsrLegis ICPSR code of legislator.
party Party of legislator.
partyCode ICPSR party code of legislator.
codes
list of four vectors. yea shows the codes in votes that are yea
votes, 'nay' shows nay codes, notInLegis shows absences, and missing
shows the missing codes.
n
numeric, number of legislators
m
numeric, number of roll calls
legis.data
data frame, containing the following information on legislators:
state State name of legislator.
icpsrState ICPSR state code of legislator.
cd Congressional District number.
icpsrLegis ICPSR code of legislator.
party Party of legislator.
partyCode ICPSR party code of legislator.
vote.data
null, would otherwise be a data frame containing data on the votes.
desc
null, would otherwise be a string describing the data set.
#This data file is the same as reading file using:
#sen90 <- readKH("ftp://voteview.com/sen90kh.ord")
#All ORD files can be found on www.voteview.com
data(sen90)
summary(sen90)
result<-wnominate(sen90,polarity=c(2,5))
summary(result)
plot(result)
providing 
.