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Voting results for 15 congressmen from New Jersey.

Usage

data("voting")

Format

A 15 times 15 matrix.

Details

Romesburg (1984) gives a set of data that shows the number of times 15 congressmen from New Jersey voted differently in the House of Representatives on 19 environmental bills. Abstentions are not recorded.

Source

H. C. Romesburg (1984), Cluster Analysis for Researchers. Lifetime Learning Publications, Belmont, Canada.

Examples


  data("voting", package = "HSAUR3")
  require("MASS")
#> Loading required package: MASS
  voting_mds <- isoMDS(voting)
#> initial  value 15.268246 
#> iter   5 value 10.264075
#> final  value 9.879047 
#> converged
  plot(voting_mds$points[,1], voting_mds$points[,2],
       type = "n", xlab = "Coordinate 1", ylab = "Coordinate 2",
       xlim = range(voting_mds$points[,1])*1.2)
  text(voting_mds$points[,1], voting_mds$points[,2], 
       labels = colnames(voting))

  voting_sh <- Shepard(voting[lower.tri(voting)], voting_mds$points)