[R] [R-pkgs] New sp release

[Roger Bivand]

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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