Preface to First Edition - lib

332 CLUSTER ANALYSISR> clPairs(planet.dat,+ classification = planet_mclust$classification,+ symbols = 1:3, col = "black")0.0 0.2 0.4 0.6 0.8 1.0mass0.0 0.2 0.4 0.6 0.8 1.00.0 0.2 0.4 0.6 0.8 1.0periodeccen0.0 0.2 0.4 0.6 0.8 1.00.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0Figure 18.9Scatterplot matrix of planets data showing a three-cluster solutionfrom Mclust.This solution can be shown graphically as a scatterplot matrix. The plot isshown in Figure 18.9. Figure 18.10 depicts the clustering solution in the threedimensionalspace.The number of planets in each cluster and the mean vectors of the threeclusters for the untransformed data can now be inspected by usingR> table(planet_mclust$classification)1 2 319 41 41R> ccent(planet_mclust$classification)© 2010 by Taylor and Francis Group, LLC