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How to specify the GeoJSON object type in MongoDB?
MongoDB supports the GeoJSON object types listed on this page. To specify GeoJSON data, use an embedded document with: a field named type that specifies the GeoJSON object type and. a field named coordinates that specifies the object’s coordinates.
How many coordinates are in a GeoJSON polygon?
Polygons consist of an array of GeoJSON LinearRing coordinate arrays. These LinearRings are closed LineStrings. Closed LineStrings have at least four coordinate pairs and specify the same position as the first and last coordinates.
What should the latitude and longitude be in MongoDB?
If specifying latitude and longitude coordinates, list the longitude first and then latitude: Valid longitude values are between -180 and 180, both inclusive. Valid latitude values are between -90 and 90, both inclusive.
Which is an example of a GeoJSON type?
The following example stores coordinates of GeoJSON type GeometryCollection: © MongoDB, Inc 2008-present. MongoDB, Mongo, and the leaf logo are registered trademarks of MongoDB, Inc.
How does the geointersects operator work in MongoDB?
Selects documents whose geospatial data intersects with a specified GeoJSON object; i.e. where the intersection of the data and the specified object is non-empty. The $geoIntersects operator uses the $geometry operator to specify the GeoJSON object.
How to query a Polygon greater than one hemisphere in MongoDB?
For single-ringed polygons with areas greater than a single hemisphere, see Intersects a “Big” Polygon. To query with a single-ringed GeoJSON polygon whose area is greater than a single hemisphere, the $geometry expression must specify the custom MongoDB coordinate reference system.
Can a GeoJSON have more than one ring?
The following example specifies a GeoJSON Polygon with an exterior ring and no interior rings (or holes). The first and last coordinates must match in order to close the polygon: For Polygons with a single ring, the ring cannot self-intersect. For Polygons with multiple rings: The first described ring must be the exterior ring.
How is geospatial data stored in MongoDB?
In MongoDB, you can store geospatial data as GeoJSON objects or as legacy coordinate pairs. To calculate geometry over an Earth-like sphere, store your location data as GeoJSON objects.
How to specify the location of an object in MongoDB?
To specify GeoJSON data, use an embedded document with: a field named coordinates that specifies the object’s coordinates. If specifying latitude and longitude coordinates, list the longitude first and then latitude: Valid longitude values are between -180 and 180, both inclusive.