contourN(varargin)

Wrap contours lines of isovalues on a surface

CONTOURN 3-D contour plot on a surface.
CONTOURN(...) combines CONTOUR(...), CONTOURM(...) and INTERP2(...) to
drawn contours wrapped on a 3d surface.

[C] = CONTOURN(...) returns contour matrix C as described in CONTOURC.
In map axis, see CONTOURM.

[C,H] = CONTOURN(...) returns an handle H to a contourgroup object that
can be used in CLABEL. In map axis, see CONTOURM.

CONTOURN(..., PARAM1, VAL1, PARAM2, VAL2, ...) allows you to set the
same optional parameters as in CONTOUR and CONTOURM.

Example:
contourN(repmat(1:3,3,1)',repmat(1:3,3,1),rand(3,3),rand(3,3),...
'linewidth',2,'showtext','on');

See also CONTOUR, INTERP2, SET, CONTOURM and MINVTRAN.