[R-sig-Geo] Polar mapping

[Anne Hertel]

Hi,

I have some geographical data for the Northern Hemisphere. It is a rectangular matrix with longitudes and latitudes. I would like to plot that so the resulting plot is a circle centered on the North Pole with contours, so you only see the Northern Hemisphere. Also I would like to overlay that with a map of the Northern Hemisphere continents.
Does anybody know if it is possible to create plots like that in R?

Thanks Anne Hertel


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Anne M. K. Hertel
Grad. Student & Research Assistant
Department of Atmospheric Sciences
University of Illinois at Urbana-Champaign
Annex II, room 204
Phone: (217) 333 6296