Jon Schnute <SchnuteJ@pac.dfo-mpo.gc.ca>, Nicholas Boers,
Rowan Haigh <HaighR@pac.dfo-mpo.gc.ca>, and others.
This software has evolved from fisheries research
conducted at the Pacific Biological Station (PBS) in Nanaimo,
British Columbia, Canada. It extends the R language to include
two-dimensional plotting features similar to those commonly
available in a Geographic Information System (GIS).  Embedded
C code speeds algorithms from computational geometry, such as
finding polygons that contain specified point events or
converting between longitude-latitude and Universal Transverse
Mercator (UTM) coordinates.  It includes data for a global
shoreline and other data sets in the public domain. For a
complete user guide, see the file "PBSmapping-UG.pdf" in the
directory \library\PBSmapping of the local R installation.