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