data. The classes document where the spatial location information
resides, for 2D or 3D data. Utility functions are provided, e.g.
for plotting data as maps, spatial selection, as well as methods
for retrieving coordinates, for subsetting, print, summary, etc.
WWW: http://r-spatial.sourceforge.net/
PR: ports/130974
Submitted by: Wen Heping <wenheping at gmail.com>
