[R-sig-Geo] Extract coordinates from SpatialPolygonsDataFrame

[hadley wickham]

> It would be great if you could put your code
> in the wiki
> http://wiki.r-project.org/rwiki/doku.php?id=tips:spatial-data

I don't mind if the code is put on the wiki, but I don't want to keep
it up-to-date in to places, and people will be able to use it directly
from the next release of ggplot2.

Hadley

-- 
http://had.co.nz/