[R] Accessing coordinates of plotted contour lines (was "3d contours")

[Spencer Graves]

	  I just listed "contour".  Unfortunately, the work is done by a call 
to ".Internal(contour(...)...)", and this call returns nothing.  It 
clearly computes what you want but does not return it.

	  Someone who knew what they were doing could get the source code for 
the internal contour function and modify it so it returned a list 
containing the lines plotted, and also modify contour.default so it 
returned the output of the internal contour function.  However, I don't 
know how to do that.

	  With luck, someone else will respond.

hope this helps.
Spencer Graves

#######################
Karim Elsawy wrote:

 >thanks a lot I recieved your reply
 >I sent this e-mail  just by mistake
 >what I'm realy looking for is the coordinates of the 3d isosurfaces I do
 >not want
 >just to plot them.
 >
 >thanks again
 >
 >Spencer Graves wrote:
 >
      I recieved and replied to this same post yesterday.  Did you
receive my reply?

      Also, have you searched www.r-project.org -> Search -> "R site
search"?

      hope this helps.  spencer graves

Karim Elsawy wrote:

>Hi,
>I wonder if there is any R package or function which produces the
>coordinates of a 3d contour (isosurface) 
>from a 3d data array.
>any suggestions are very much appreciated
>best regards
>karim
>
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