1. Forward Computation
A Forward Computation is used to calculate a point's coordinates from distance and direction data from another set of coordinates:
Eqn (C-1) is a combination of the latitude and departure and coordinate equations from the Traverse Computations topic.
- North Lat is (+), South Lat is (–)
- East Dep is (+), West Dep is (–)
DirAB can be either a bearing or azimuth:
- If a bearing (0° to 90°) is used you must manually determine the correct algebraic sign for the Lat and Dep based on quadrant.
- Using azimuths (0° to 360°) automatically results in correct signs.
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