[lat, lon] = ellipse1(lat0, lon0, ellipse)
[lat, lon] = ellipse1(lat0, lon0, ellipse, offset)
[lat, lon] = ellipse1(lat0, lon0, ellipse, offset, npts)
| Parameter | Description |
|---|---|
| lat0 | latitude of the ellipse center, in degrees. |
| lon0 | longitude of the ellipse center, in degrees. |
| ellipse | two-element vector [semimajor eccentricity]; the semimajor axis is a spherical distance in degrees of arc. |
| offset | azimuth of the semimajor axis, in degrees (default 0). |
| npts | number of points used to trace the ellipse (default 100). |
| Parameter | Description |
|---|---|
| lat | latitudes of the ellipse boundary points, in degrees. |
| lon | longitudes of the ellipse boundary points, in degrees. |
ellipse1 returns the latitude and longitude of points tracing a small ellipse on a sphere, centered at (lat0, lon0). The ellipse is described by its semimajor axis (a spherical distance in degrees of arc) and its eccentricity. A zero eccentricity produces a small circle whose radius equals the semimajor axis. The boundary points are obtained with reckon, so the first and last points coincide.
[lat, lon] = ellipse1(0, 0, [10 0.8], 30);
f = figure();
plot(lon, lat);
axis equal| Version | Description |
|---|---|
| 2.0.0 | Initial version. |