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I would like to extract the functions that describe the contours of a contour plot.

For example, if I have the function:

  ContourPlot[f[x,y], {x, 0, 4 Pi}, {y, 0, 4 Pi}, Contours -> 4]

I would like to have access to the 4 contours that were generated by the plot.

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marked as duplicate by Alexey Popkov, chris, Öskå, Jens, Simon Woods Nov 24 '14 at 20:32

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  • $\begingroup$ Their value or their colour? $\endgroup$ – chris Nov 24 '14 at 18:53
  • $\begingroup$ I am looking for an Interpolating function of the contour... $\endgroup$ – user13675 Nov 24 '14 at 19:07
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if you want the values only

 plot = ContourPlot[x, {x, 0, 1}, {y, 0, 1}, Contours -> 4];
 Cases[FullForm[plot], Tooltip[{__}, b_] :>  b, Infinity]
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