ENTROPYindex1D          ENTROPY PPindex
GINIindex1D             GINI PPindex
Huberplot               Huber plot
LDAindex                LDA PPindex
LDAopt                  PP optimization using LDA index
Lrindex                 Lr PPindex
PDAindex                PDA PPindex
PDAopt                  PP optimization using PDA index
PPTreeclass             Projection pursuit classification tree
PPclassNodeViz          PPtree node visualization
PPclassify              predict PPtree
PPopt                   Projection pursuit optimization
PPoptViz                PPopt visualization
plot.PPtreeclass        PPtree plot
predict.PPtreeclass     predict PPtree
print.PPtreeclass       Print PP.Tree.class result
