GeoJSON is a geospatial data interchange format based on JavaScript Object Notation (JSON)
GeoJSON is a geospatial data interchange format based on JavaScript Object Notation (JSON)
A GeoJSON object may represent a geometry, a feature, or a collection of features. GeoJSON supports the following geometry types: Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, and GeometryCollection. Features in GeoJSON contain a geometry object and additional properties, and a feature collection represents a list of features.
GeoJSON became an Internet Engineering Task Force (IETF) standard 7946 in 2016 replacing the previous version GeoJSON 2008.
The most notable change between the two versions of GeoJSON has been the removal of the the use of alternative coordinate reference systems ~ GeoJSON 2008 allowed alternative coordinate reference systems specified through the use of a crs member.
The GeoJSON 7946 specification now tells us that:
The coordinate reference system for all GeoJSON coordinates is a geographic coordinate reference system, using the World Geodetic System 1984 (WGS 84) [WGS84] datum, with longitude and latitude units of decimal degrees. This is equivalent to the coordinate reference system identified by the Open Geospatial Consortium (OGC) URN urn:ogc:def:crs:OGC::CRS84.
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