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2010 Sep 06
1
extracting x,y coordinates from a contour plot
Requisite info: R version 2.11.1 (2010-05-31) running on a 64 bit HP Windows
7 machine.
Greetings, R-ians:
I have used contour() for several years. Now I would like to extract from a
contour plot the x, y coordinates of a contour z=constant. This seems as
though it would be straight-forward but I''ve been unsuccessful in my
searches of CRAN.
Can anyone provide a hint?