Coord v0.1.0 Coord.Point.LatLng View Source
A point represented by a latitude and longitude.
iex> use Coord
iex> _point = LatLng.new(51.178861, -1.826412)
%Coord.Point.LatLng{lat: 51.178861, lng: -1.826412}
By the way, the default values of the struct point to the same point at
Stonehenge as the default values of the Coord.Point.LatLng
struct for
testing purposes.
Concept
The latitude of a point is defined as the angle between a line from that point to the center of the earth and the equatorial plane. Latitude lines run from north to south. This library follows the convention that north of the equator is positive and south of the equator is negative.
The longitude of a point is defined as the angle between the meridian that passes through that point and the prime meridian. Longitude lines run east to west. This library follows the convention that meridians east of the prime meridian are positive and meridians west of the prime meridian are negative.
Great ellipses are the intersection the earth and planes that pass through the center of the earth. Meridians are halves of the great ellipses which also pass through the poles.
Source: https://en.wikipedia.org/wiki/Geographic_coordinate_system#Latitude_and_longitude
Link to this section Summary
Functions
Create a LatLng point from an UTM point.
Create a new LatLng point for a latitude and longitude
Link to this section Types
Specs
A struct containing a latitude and longitude.
Keys:
:lat
: The latitude as a float:lng
: The longitude as a float
Link to this section Functions
Specs
from(Coord.Point.UTM.t()) :: t()
Create a LatLng point from an UTM point.
Uses Karney's method. Accurate up to 5nm if the point is within 3900km of the central meridian.
Specs
Create a new LatLng point for a latitude and longitude