fishnet::WGS84Ellipsoid Class Reference

Utility class for computing distances and areas in metric units for GIS data using the WGS84 Spatial Reference System. More...

#include <WGS84Ellipsoid.hpp>

Static Public Member Functions
static double	distance (double lambdaA, double phiA, double lambdaB, double phiB, bool exact=true)
static double	distance (fishnet::geometry::IPoint auto const &p, fishnet::geometry::IPoint auto const &q, bool exact=true) noexcept
	Compute the distance between two points in metric units.
static double	area (fishnet::geometry::Shape auto const &shape)

Static Public Attributes
static constexpr double	flattening = 1.0 / 298.257223563
static constexpr double	radiusInMeter = 6378137
static OGRSpatialReference	spatialReference = initWGS84()

Detailed Description

Utility class for computing distances and areas in metric units for GIS data using the WGS84 Spatial Reference System.

Member Function Documentation

area()

static double fishnet::WGS84Ellipsoid::area ( fishnet::geometry::Shape auto const &  shape )

inlinestatic

Calculate the area of a Shape in m² by projection

Parameters

shape

Shape to calculate the area of

Deprecated:

Exceptions

runtime_error

when the projection to metric fails

Returns

area in m²

distance() [1/2]

static double fishnet::WGS84Ellipsoid::distance ( double  lambdaA, double  phiA, double  lambdaB, double  phiB, bool  exact = true  )

inlinestatic

Parameters

lambdaA	longitude of point A
phiA	latitude of point A
lambdaB	longitude of point B
phiB	latitude of point B
exact	applies additional correction for the distances For further reading consider: https://de.wikipedia.org/wiki/Orthodrome

Returns

distance between A and B in meters

distance() [2/2]

static double fishnet::WGS84Ellipsoid::distance ( fishnet::geometry::IPoint auto const &  p, fishnet::geometry::IPoint auto const &  q, bool  exact = true  )

inlinestaticnoexcept

Compute the distance between two points in metric units.

Parameters

p	point (long,lat)
q	point (long,lat)
exact	applies additional correction for the distances

Returns

distance between p and q in meters

Member Data Documentation

flattening

constexpr double fishnet::WGS84Ellipsoid::flattening = 1.0 / 298.257223563

staticconstexpr

radiusInMeter

constexpr double fishnet::WGS84Ellipsoid::radiusInMeter = 6378137

staticconstexpr

spatialReference

OGRSpatialReference fishnet::WGS84Ellipsoid::spatialReference = initWGS84()

inlinestatic

---

The documentation for this class was generated from the following file:

• lib/io/gdal/include/fishnet/WGS84Ellipsoid.hpp