[R-sig-Geo] newbie sp question

[Edzer J. Pebesma]

Roger Bivand wrote:
> It may also be worth asking on the PostGIS list whether you could upload 
> your geometries to PostGIS and have GEOS do the measurement - if you have 
> access to the software and experience with it. It may be that it can 
> handle geographical coordinates.
>   

I have to be careful here, but I do believe that it cannot do this right 
now--it assumes projected data for topological relations/functions. See 
also the wishlist for PostGIS 2.0 referenced from the refractions site 
or its wiki if you want to find out.
--
Edzer