Function TopocentricFrame.geodeticToTopocentric

Convert a geodetic coordinate directly to local East/North/Up.

TopocentricCoordinate!T geodeticToTopocentric(
  const GeodeticCoordinate!T source
) const @safe;

Throws GeodesyValueException when the frame is invalid or the composed EPSG 9837 operation cannot produce a finite representable public result.

Parameters

NameDescription
source Geodetic coordinate whose height uses the frame linear unit.

Returns

Local East/North/Up in the frame linear unit.

Throws

GeodesyValueException for an invalid frame or failed composed conversion.

Example

Example converting a geodetic position to ENU. 

import geodesy;
const origin = GeodeticCoordinate!double.fromComponents(
    Latitude!double.fromDegrees(48.20849),
    Longitude!double.fromDegrees(16.37208),
    171.0);
const frame = TopocentricFrame!double.fromGeodeticOrigin(
    wgs84!double(), origin);
const nearby = GeodeticCoordinate!double.fromComponents(
    Latitude!double.fromDegrees(48.20850),
    Longitude!double.fromDegrees(16.37210),
    175.0);
const local = frame.geodeticToTopocentric(nearby);
assert(local.north == local.north);