older matlab compatibility

Author: scivision

+matmap3d/aer2ecef.m

@@ -14,16 +14,11 @@
 % * x,y,z: Earth Centered Earth Fixed (ECEF) coordinates of test point (meters)
 
 function [x,y,z] = aer2ecef(az, el, slantRange, lat0, lon0, alt0, spheroid, angleUnit)
-
-arguments
-  az {mustBeReal}
-  el {mustBeReal}
-  slantRange {mustBeReal, mustBeNonnegative}
-  lat0 {mustBeReal}
-  lon0 {mustBeReal}
-  alt0 {mustBeReal}
-  spheroid (1,1) matmap3d.referenceEllipsoid = matmap3d.wgs84Ellipsoid()
-  angleUnit {mustBeTextScalar} = 'd'
+if nargin < 7 || isempty(spheroid)
+  spheroid = matmap3d.wgs84Ellipsoid();
+end
+if nargin < 8
+  angleUnit = 'd';
 end
 
 % Origin of the local system in geocentric coordinates.

+matmap3d/aer2eci.m

@@ -8,16 +8,11 @@
 %%% Outputs
 % * x, y, z:  ECI x, y, z
 function [x, y, z] = aer2eci(utc, az, el, rng, lat, lon, alt, spheroid, angleUnit)
-arguments
-  utc datetime
-  az {mustBeReal}
-  el {mustBeReal}
-  rng {mustBeReal, mustBeNonnegative}
-  lat {mustBeReal}
-  lon {mustBeReal}
-  alt {mustBeReal}
-  spheroid (1,1) matmap3d.referenceEllipsoid = matmap3d.wgs84Ellipsoid()
-  angleUnit {mustBeTextScalar} = 'd'
+if nargin < 8 || isempty(spheroid)
+  spheroid = matmap3d.wgs84Ellipsoid();
+end
+if nargin < 9
+  angleUnit = 'd';
 end
 
 [x1, y1, z1] = matmap3d.aer2ecef(az, el, rng, lat, lon, alt, spheroid, angleUnit);

+matmap3d/aer2enu.m

@@ -9,14 +9,11 @@
 %%% Outputs
 % * e,n,u:  East, North, Up coordinates of test points (meters)
 function [e, n, u] = aer2enu (az, el, slantRange, angleUnit)
-arguments
-  az {mustBeReal}
-  el {mustBeReal}
-  slantRange {mustBeReal}
-  angleUnit {mustBeTextScalar} = 'd'
+if nargin < 4
+  angleUnit = 'd';
 end
 
-if startsWith(angleUnit,'d')
+if strncmp(angleUnit, 'd', 1)
   az = deg2rad(az);
   el = deg2rad(el);
 end

+matmap3d/aer2geodetic.m

@@ -11,15 +11,11 @@
 %%% Outputs
 % * lat1,lon1,alt1: geodetic coordinates of test points (degrees,degrees,meters)
 function [lat1, lon1, alt1] = aer2geodetic(az, el, slantRange, lat0, lon0, alt0, spheroid, angleUnit)
-arguments
-  az {mustBeReal}
-  el {mustBeReal}
-  slantRange {mustBeReal,mustBeNonnegative}
-  lat0 {mustBeReal}
-  lon0 {mustBeReal}
-  alt0 {mustBeReal}
-  spheroid (1,1) matmap3d.referenceEllipsoid = matmap3d.wgs84Ellipsoid()
-  angleUnit {mustBeTextScalar} = 'd'
+if nargin < 7 || isempty(spheroid)
+  spheroid = matmap3d.wgs84Ellipsoid();
+end
+if nargin < 8
+  angleUnit = 'd';
 end
 
 [x, y, z] = matmap3d.aer2ecef(az, el, slantRange, lat0, lon0, alt0, spheroid, angleUnit);

+matmap3d/aer2ned.m

@@ -9,11 +9,8 @@
 %%% Outputs
 % * north, east, down:  coordinates of points (meters)
 function [north, east, down] = aer2ned(az, el, slantRange, angleUnit)
-arguments
-  az {mustBeReal}
-  el {mustBeReal}
-  slantRange {mustBeReal}
-  angleUnit {mustBeTextScalar} = 'd'
+if nargin < 4
+  angleUnit = 'd';
 end
 
 [east, north, up] = matmap3d.aer2enu(az, el, slantRange, angleUnit);

+matmap3d/ecef2aer.m

@@ -11,16 +11,11 @@
 % * az: azimuth clockwise from local north
 % * el: elevation angle above local horizon
 function [az, el, slantRange] = ecef2aer(x, y, z, lat0, lon0, alt0, spheroid, angleUnit)
-
-arguments
-  x {mustBeReal}
-  y {mustBeReal}
-  z {mustBeReal}
-  lat0 {mustBeReal}
-  lon0 {mustBeReal}
-  alt0 {mustBeReal}
-  spheroid (1,1) matmap3d.referenceEllipsoid = matmap3d.wgs84Ellipsoid()
-  angleUnit {mustBeTextScalar} = 'd'
+if nargin < 7 || isempty(spheroid)
+  spheroid = matmap3d.wgs84Ellipsoid();
+end
+if nargin < 8
+  angleUnit = 'd';
 end
 
 [e, n, u] = matmap3d.ecef2enu(x, y, z, lat0, lon0, alt0, spheroid, angleUnit);

+matmap3d/ecef2eci_naive.m

@@ -8,12 +8,6 @@
 % * x,y,z:  ECI position (meters)
 
 function [x,y,z] = ecef2eci_naive(utc, x0, y0, z0)
-arguments
-  utc (:,1) datetime
-  x0 (:,1) {mustBeReal,mustBeEqualSize(utc,x0)}
-  y0 (:,1) {mustBeReal,mustBeEqualSize(utc,y0)}
-  z0 (:,1) {mustBeReal,mustBeEqualSize(utc,z0)}
-end
 
 % Greenwich hour angles (radians)
 gst = matmap3d.greenwichsrt(juliandate(utc));

+matmap3d/ecef2enu.m

@@ -11,15 +11,11 @@
 % * East, North, Up coordinates of test points (meters)
 
 function [east, north, up] = ecef2enu(x, y, z, lat0, lon0, alt0, spheroid, angleUnit)
-arguments
-  x {mustBeReal}
-  y {mustBeReal}
-  z {mustBeReal}
-  lat0 {mustBeReal}
-  lon0 {mustBeReal}
-  alt0 {mustBeReal}
-  spheroid (1,1) matmap3d.referenceEllipsoid = matmap3d.wgs84Ellipsoid()
-  angleUnit {mustBeTextScalar} = 'd'
+if nargin < 7 || isempty(spheroid)
+  spheroid = matmap3d.wgs84Ellipsoid();
+end
+if nargin < 8
+  angleUnit = 'd';
 end
 
 [x0, y0, z0] = matmap3d.geodetic2ecef(spheroid, lat0, lon0, alt0, angleUnit);

+matmap3d/ecef2enuv.m

@@ -9,16 +9,11 @@
 % * e,n,Up:  East, North, Up vector
 
 function [e, n, Up] = ecef2enuv(u, v, w, lat0, lon0, angleUnit)
-arguments
-  u {mustBeReal}
-  v {mustBeReal}
-  w {mustBeReal}
-  lat0 {mustBeReal}
-  lon0 {mustBeReal}
-  angleUnit {mustBeTextScalar} = 'd'
+if nargin < 6
+  angleUnit = 'd';
 end
 
-if startsWith(angleUnit, 'd')
+if strncmp(angleUnit, 'd', 1)
   lat0 = deg2rad(lat0);
   lon0 = deg2rad(lon0);
 end

+matmap3d/ecef2geodetic.m

@@ -13,12 +13,8 @@
 % Journal of Surveying Engineering. doi: 10.1061/(ASCE)0733-9453
 
 function [lat,lon,alt] = ecef2geodetic(spheroid, x, y, z, angleUnit)
-arguments
-  spheroid {mustBeScalarOrEmpty}
-  x {mustBeReal}
-  y {mustBeReal}
-  z {mustBeReal}
-  angleUnit {mustBeTextScalar} = 'd'
+if nargin < 5
+  angleUnit = 'd';
 end
 
 if isempty(spheroid)
@@ -59,7 +55,7 @@
 alt(inside) = -alt(inside);
 
 
-if startsWith(angleUnit, 'd')
+if strncmp(angleUnit, 'd', 1)
   lat = rad2deg(lat);
   lon = rad2deg(lon);
 end