1function [latlong, aux] = geodesicdirect(geodesic, a, f) 2%GEODESICDIRECT Wrapper for geodreckon 3% 4% [latlong, aux] = GEODESICDIRECT(geodesic) 5% [latlong, aux] = GEODESICDIRECT(geodesic, a, f) 6% 7% This is a legacy function to replace a compiled interface function of 8% the same name. This now calls geodreckon which is implemented as 9% native Matlab code. 10% 11% geodesic is an M x 4 matrix 12% latitude of point 1 = latlong(:,1) in degrees 13% longitude of point 1 = latlong(:,2) in degrees 14% azimuth at point 1 = latlong(:,3) in degrees 15% distance to point 2 = latlong(:,4) in meters 16% 17% latlong is an M x 3 matrix 18% latitude of point 2 = geodesic(:,1) in degrees 19% longitude of point 2 = geodesic(:,2) in degrees 20% azimuth at point 2 = geodesic(:,3) in degrees 21% aux is an M x 5 matrix 22% spherical arc length = aux(:,1) in degrees 23% reduced length = aux(:,2) in meters 24% geodesic scale 1 to 2 = aux(:,3) 25% geodesic scale 2 to 1 = aux(:,4) 26% area under geodesic = aux(:,5) in meters^2 27% 28% a = equatorial radius (meters) 29% f = flattening (0 means a sphere) 30% If a and f are omitted, the WGS84 values are used. 31% 32% See also GEODRECKON. 33 34% Copyright (c) Charles Karney (2015-2017) <charles@karney.com>. 35 36 if (nargin < 2) 37 ellipsoid = defaultellipsoid; 38 elseif (nargin < 3) 39 ellipsoid = [a, 0]; 40 else 41 ellipsoid = [a, flat2ecc(f)]; 42 end 43 [lat2, lon2, azi2, S12, m12, M12, M21, a12] = geodreckon ... 44 (geodesic(:,1), geodesic(:,2), geodesic(:,4), geodesic(:,3), ... 45 ellipsoid); 46 latlong = [lat2, lon2, azi2]; 47 aux = [a12, m12, M12, M21, S12]; 48end 49