[R] how to draw continent boundry

[Yogesh K. Tiwari]

Hi,

If I am ploting a world map like

plot (lon,lat)

then how to draw a continent boundry in that
plot.

What is the command...


Many thanks

Regards,
Yogesh
-- 

===========================================
Yogesh K. Tiwari,
Max-Planck Institute for Biogeochemistry,
Hans-Knoell Strasse 10,
D-07745 Jena,
Germany

Office   : 0049 3641 576 376
Home     : 0049 3641 223 163
Fax      : 0049 3641 577 300
Cell     : 0049 1520 459 1008
e-mail   : yogesh.tiwari at bgc-jena.mpg.de