$centerSphere
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Definition
-
$centerSphere
-
Defines a circle for a geospatial query that uses spherical geometry. The query returns documents that are within the bounds of the circle. You can use the
$centerSphere
operator on both GeoJSON objects and legacy coordinate pairs.To use
$centerSphere
, specify an array that contains:- The grid coordinates of the circle’s center point, and
- The circle’s radius measured in radians. To calculate radians, see Calculate Distance Using Spherical Geometry.
Important
If you use longitude and latitude, specify longitude first.
Behavior
Applications can use $centerSphere
without having a geospatial index. However, geospatial indexes support much faster queries than the unindexed equivalents.
Both 2dsphere and 2d geospatial indexes support $centerSphere
.