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(), np.svariso(), "svar.bin" and "np.svar" classes and methods.
aquifer    np geostatistical analysis of Wolfcamp aquifer data.
