Projection Pursuit Classification Tree Visualization (PPtreeViz)
Tools for exploring projection pursuit classification tree using LDA, Lr or PDA projection pursuit index.

Enables Efficient Joining of Data File on Common Fields using the Unix Utility Join (MultiJoin)
Wrapper around the Unix join facility which is more efficient than the built-in R routine merge(). The package enables the joining of multiple files on disk at once. The files can be compressed and various filters can be deployed before joining. Compiles only under Unix.

Nonparametric Hypothesis Tests of Isotropy and Symmetry (spTest)
Implements nonparametric hypothesis tests to check isotropy and symmetry properties for two-dimensional spatial data.