Re: [R-sig-Geo] Calculate location given observation distance and angle from transect line

2010-02-17 Thread Robert J. Hijmans
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 wrote: > Hello, > > I've tu

[R-sig-Geo] Calculate location given observation distance and angle from transect line

2010-02-17 Thread Corrie Curtice
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 ang