[R-sig-Geo] seamless maps

[Hans-Jörg Bibiko]

Hi,

I wonder if there's a workaround to generate seamless maps based on  
SpatialPolygons objects. E.g. to produce a map showing Australia at  
the left edge and America at the right one ( xlim := min: 110°E , max:  
30°W ).
Or the way around, is there a function to re-center a given map by  
defining the median longitude? (I know the function 'recenter' which  
produce a map from 0° to 360°)

Kind regards,

--Hans