Corrie: I think you can use the function 'destPoint' in 'geosphere', It computes (for longitude/latitude coordinate data) the coordinates of a destination point given a start point, initial bearing, and distance.
Robert On Wed, Feb 17, 2010 at 8:00 AM, Corrie Curtice <cc...@duke.edu> wrote: > Hello, > > I've turned up little in searching for a package that already has this > function. Dspat is close but I don't think it does quite what I want. > > I have observation data gathered from a ship transect doing a zig-zag > pattern. I have the current location of the ship, the ship's bearing, > the angle from the transect to the sighting, and the observed distance > to the sighting (and the height of the observer above water). Is > there already a package/function in R that will "easily" convert this > information to the lat/lon of the observed animal? > > Thanks for any help or guidance. > > Corrie > > --- > Corrie Curtice > Research Associate > Marine Geospatial Ecology Lab > Nicholas School of the Environment, Duke University > http://mgel.env.duke.edu > em: corrie.curt...@duke.edu > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo