[R] plotting points over a map using R
deleili at hotmail.com
Fri Jan 31 10:58:24 CET 2014
I have no idea how to plotting points over a map using R, in which the colors of the points stand for the points' value. I'd like to get a map as shown in attachment picture which was plotted using matlab. Does anyone know how to do it using R? Thank you very much for your help in advance.
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