Geography and geometry
General utilities and types that relate to working with and manipulating geographic information or geometries.
LngLat
src/geo/lng_lat.jsA LngLat object represents a given longitude and latitude coordinate, measured in degrees.
These coordinates use longitude, latitude coordinate order (as opposed to latitude, longitude)
to match the GeoJSON specification,
which is equivalent to the OGC:CRS84 coordinate reference system.
Note that any Mapbox GL method that accepts a LngLat object as an argument or option
can also accept an Array of two numbers and will perform an implicit conversion.
This flexible type is documented as LngLatLike.
Parameters
Example
const ll = new mapboxgl.LngLat(-123.9749, 40.7736);
console.log(ll.lng); // = -123.9749
Static Members
Instance Members
Related
LngLatBounds
src/geo/lng_lat.jsA LngLatBounds object represents a geographical bounding box,
defined by its southwest and northeast points in longitude and latitude.
If no arguments are provided to the constructor, a null bounding box is created.
Note that any Mapbox GL method that accepts a LngLatBounds object as an argument or option
can also accept an Array of two LngLatLike constructs and will perform an implicit conversion.
This flexible type is documented as LngLatBoundsLike.
Parameters
Example
const sw = new mapboxgl.LngLat(-73.9876, 40.7661);
const ne = new mapboxgl.LngLat(-73.9397, 40.8002);
const llb = new mapboxgl.LngLatBounds(sw, ne);
Static Members
Instance Members
LngLatBoundsLike
src/geo/lng_lat.jsA LngLatBounds object, an array of LngLatLike objects in [sw, ne] order, or an array of numbers in [west, south, east, north] order.
(LngLatBounds | [LngLatLike, LngLatLike] | [number, number, number, number])Example
const v1 = new mapboxgl.LngLatBounds(
new mapboxgl.LngLat(-73.9876, 40.7661),
new mapboxgl.LngLat(-73.9397, 40.8002)
);
const v2 = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
const v3 = [[-73.9876, 40.7661], [-73.9397, 40.8002]];
LngLatLike
src/geo/lng_lat.jsA LngLat object, an array of two numbers representing longitude and latitude,
or an object with lng and lat or lon and lat properties.
Example
const v1 = new mapboxgl.LngLat(-122.420679, 37.772537);
const v2 = [-122.420679, 37.772537];
const v3 = {lon: -122.420679, lat: 37.772537};
MercatorCoordinate
src/geo/mercator_coordinate.jsA MercatorCoordinate object represents a projected three dimensional position.
MercatorCoordinate uses the web mercator projection (EPSG:3857) with slightly different units:
- the size of 1 unit is the width of the projected world instead of the "mercator meter"
- the origin of the coordinate space is at the north-west corner instead of the middle.
For example, MercatorCoordinate(0, 0, 0) is the north-west corner of the mercator world and
MercatorCoordinate(1, 1, 0) is the south-east corner. If you are familiar with
vector tiles it may be helpful to think
of the coordinate space as the 0/0/0 tile with an extent of 1.
The z dimension of MercatorCoordinate is conformal. A cube in the mercator coordinate space would be rendered as a cube.
Parameters
Example
const nullIsland = new mapboxgl.MercatorCoordinate(0.5, 0.5, 0);
Static Members
Instance Members
Related
Point
src/ui/map.jsA Point geometry object, which has
x and y properties representing screen coordinates in pixels.
Example
const point = new mapboxgl.Point(-77, 38);
PointLike
src/ui/map.jsA Point or an array of two numbers representing x and y screen coordinates in pixels.
Example
const p1 = new mapboxgl.Point(-77, 38); // a PointLike which is a Point
const p2 = [-77, 38]; // a PointLike which is an array of two numbers
;