[R] filled maps

Janus Larsen janus at ices.dk
Tue Feb 3 09:35:46 CET 2004

Hi R-Help,

I would like to make filled contour maps of ocean data overlaid by
costlines from the map package.
I can draw the filled contours and the coastlines om the same plot, but
the filled contour also covers part of the land. To get rid of that I
tried to draw a filled coastline map on top of the filled contour, but
the filled map only draws the closed contours - so most of the land is
map("worldHires",xlim=c(0,15),ylim=c(50,60)) #Draw relevant region
(North Sea and Denmark waters)
map("worldHires",xlim=c(0,15),ylim=c(50,60),fill=TRUE) # This only draws
Denmark and Holland (Sweden, uk, Germany etc. disappears because they
are not closed polygons).

Any hint on how to fix this problem or a different approach is most

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