[pstricks] drawing level curves with pst-3dplot

In-Sung Cho ischo2k at gmail.com
Fri Feb 16 12:03:20 CET 2007


I am looking for a trick to draw level curves on the graph of a
function and its projection onto the plane, for example, with the
funciton $z=\sqrt{xy}$ or any other function.

Specifically, I want to draw the level curve $1=\sqrt{xy}$ on the xy
plane and the same thing up on the graph itself.

I am working with the following code:

 \def\Fxy{x y mul sqrt}
 \pstThreeDDot[drawCoor=true](1,1,1)  \pstThreeDDot(1,1,0)
 \pstThreeDDot[drawCoor=true](2,2,2)  \pstThreeDDot(2,2,0)

I hope there's a trick that I am looking for.


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