[R-sig-Geo] Interpolation or TIN with break lines/barriers

[Hollister.Jeff at epamail.epa.gov]

All,

I am attempting to try various methods for calculating lake volume from
a bathymetry survey of a lake (x, y, and depth).

As a long time ESRI user who is now trying to cut the cord, I would
normally do this with, IDW with barriers, a TIN with masspoints (depth
soundings) and a hardline (lake shoreline), etc.

Is there currently an R analog for this?

Thanks,
Jeff

***************************
Dr. Jeffrey W. Hollister
US EPA
Atlantic Ecology Division
27 Tarzwell Drive
Narragansett, RI 02882
(401) 782-9655