# Reckon¶

Compute the coordinates of the end-point of a displacement on a sphere. lat e lon are the coordinates of the starting point, range is the covered distance of the displacements along a great circle and azimuth is the direction of the displacement relative to the North.

This function can also be used to define a spherical coordinate system with rotated poles.

## Forms¶

[lato, lono] = reckon(lat, lon, range, azimuth)
[lato, lono] = reckon(lat, lon, range, azimuth, units)

Note

The units of all input and output parameters can be either degrees (default) or radians.

## Examples¶

Usages:

>> [lato, lono] = reckon(0, 10, 30, 90)
lato = 0
lono =  40.000
>> [lato, lono] = reckon(0, 0, pi, pi / 2, "radians")
lato = 0
lono = -3.1416