The sp package provides class definitions for spatial data, and utilities
for spatial data handling and manipulation.
The release of sp version 0.9-56 introduces changes in the ways in which
Polygon, Polygons, and SpatialPolygons objects are created, moving from R
code to compiled C code. Because of these changes, it is possible that
users will see changed output. The package maintainers have tested as far
as possible, and a beta release has been checked by some users, without
any problems coming to light.
Further details are given in:
https://stat.ethz.ch/pipermail/r-sig-geo/2010-January/007377.html
Should anyone see problems following this change, please contact me
directly with a reproducible example.
--
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no
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