GeoDistance

Computes the distance between two geographic points (latitude, longitude) on the WGS84 ellipsoid with Karney's algorithm (GeographicLib), and optionally with the Haversine formula.

Processing

distanceXY_Karney: geodesic distance from GeographicLib (accurate to nanometers).
distanceXY_Haversine (optional): great-circle distance on a sphere (faster, less accurate).

Usage

Typical inputs: UnitDelay.output → target_geoPoint; data_vectorizer.o_data → ref_geoPoint.
Typical outputs: distanceXY_Karney → SkipEarlyFrames.input_0; distanceXY_Haversine → SkipEarlyFrames.input_1.

Data format

Inputs: [latitude, longitude] in degree. Outputs: distance in meter.

Notes

See https://geographiclib.sourceforge.io/.

References

[1] C. F. F. Karney, "Algorithms for Geodesics," Journal of Geodesy, vol. 87, no. 1, pp. 43-55, 2013. https://doi.org/10.1007/s00190-012-0578-z — Used for: geodesic distance on the WGS84 ellipsoid (distanceXY_Karney).
[2] C. F. F. Karney, GeographicLib (bundled in 3rdparty/GeographicLib). https://github.com/geographiclib/geographiclib-cpp — Used for: implementation of Karney's algorithm.
[3] R. W. Sinnott, "Virtues of the Haversine," Sky and Telescope, vol. 68, no. 2, p. 159, 1984. — Used for: Haversine distance (distanceXY_Haversine).

Properties

Name	Default	Description
`Output_Haversine`	`false`	Adds the Haversine distance output.

Outputs

Name	Description
`distanceXY_Karney`	Geodesic distance in meter (Karney). Type: `Float64`
`distanceXY_Haversine`	Great-circle distance in meter (Haversine). Present when Output_Haversine is true. Type: `Float64`

Inputs

Name	Description
`target_geoPoint`	Target point [latitude, longitude] in degree. Type: `Float64`
`ref_geoPoint`	Reference point [latitude, longitude] in degree. Type: `Float64`