[R] persp and lines()

Tom Blackwell tblackw at umich.edu
Wed Feb 18 01:45:58 CET 2004

Jeff  -

See the section titled "Value:" and example (2) from  help("persp")
for instructions and an example of doing exactly what you ask.

-  tom blackwell  -  u michigan medical school  -  ann arbor  -

On Tue, 17 Feb 2004, Jeff Jorgensen wrote:

> R-sters:
> I'm interested in keeping data plotted in persp to preserve the wireframe
> look, I'd just like to change one of the lines drawn (in either the x or y
> direction) into a different color so that it stands out.
> Or is there some way to add a line (say, via lines(), or abline()) to a
> persp() plot at the designated x or y that would follow the z surface
> contour?  I could add a line using 2D representations of the data, but I'd
> like to use the perspective plot if possible.
> Any advice?
> Cheers,
> Jeff
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