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3D contour through a point

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  • Subject: [mg34004] 3D contour through a point
  • From: "Bram Platel" <b.platel at>
  • Date: Fri, 26 Apr 2002 03:27:27 -0400 (EDT)
  • Organization: Eindhoven University of Technology, The Netherlands
  • Sender: owner-wri-mathgroup at

I would like to make a contourplot of a 3D data set, but not from all the
same gray levels in the image (as is default now) but I only want to plot a
contour surface that goes through one point in the 3D data set.

For example, if I have a 3D dataset (e.g. a 3D image) and I plot a 3D
contour of the gray value in pixel (x,y) then I could get a couple of
contour surfaces which are not connected to each other and only one of them
goes through point (x,y).
But what I want is only a contour surface that goes through this point
(x,y). So that I can plot a contour that belongs to a point (and it's gray

Any advice on this?


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