contour labelling [was "Re: [R] image ()"]

Bill Simpson wsimpson at
Fri Dec 4 22:25:59 CET 1998

On Sat, 5 Dec 1998, Ross Ihaka wrote:
> Once the trianglation was produced it would be just a minor change in
> the present "persp" function to plot it.  The algorithm I use is to
> sort the facets by depth and then to plot them, back to front.  This
> works just as well for triangular facets as rectangular ones.

> If you'd care to define some data structures (or better yet a class)
> which will hold a desciption of the triangulation, I can have my student
> tweak the present code to display the structure.
Sorry to be such an idiot but I'm afraid that's beyond me.
Should I try to figure out the output of akima, then tell you what I find
out? I imagine that would be the input to the triangle version of persp.

Thanks very much Ross.


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