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

include upgrading contour, image, persp etc.  In addition I hope that
he will also add some mapping facilities along the lines of GMT (using
their shoreline database).

Now would be a good time to make suggestions about desirable features.

OK this may be a long shot.
I often have to make a plot of like this: the heights (z) of trees in a
forest (whose locations are unif rand x,y) are recorded. Now we make a 3D
shaded surface plot of the (x,y,z) data. A triangular mesh is made by
finding the Delaunay triangulation (nearest neighbours are connected).

I am not talking about doing some form of interpolation (hence forcing the
data onto a regular grid).

Right now I make this type of plot with Mathematica, but it would be nice
to do this in R and get rid of Mma.

Thanks very much Ross for getting the persp() function into R.

Bill

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