how to derive true surface area from `computeContour3d' (misc3d package) -- follow up

On Fri, Nov 8, 2013 at 1:01 PM, j. van den hoff

ps: it of course would still be nice, if the surface area (or a vector
containing the individual triangle areas)
were returned to the caller as well ...

Does the 'surfaceArea' function in the sp package do what you want?
It's Edzer's integration of an R function that I wrote that calls some
C code that someone else wrote that implements an algorithm from 2004.

 You just need to coerce your grid data into the right form.

 Barry