Hi,

Sorry if this has been covered somewhere.  

Is there a writeup describing how new maps get added to map, mapdata,
mapproj?  What I'm trying to do is overlay polygons in latitude and
longitude onto these maps, then project them.  The associated things
you'd like to do with such overlays apply, e.g,. color them, use
different boundaries, etc.  Or perhaps there is also an overlay
mechanism?

Second, is there an online archive of r-sig-geo (or for that matter
r-help, etc) that can be searched for such questions?

Thanks,

 - Jan



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