datagrid   "grid.par" and "data.grid" classes and methods 
binning    binning() and "bin.data" class and methods
locpol     locpol() and "locpol.bin" class and methods
variogram  svariso(), svaisonp(), "svar.bin" and "np.svar" classes and methods
aquifer    geostatistical analysis of Wolfcamp aquifer data
