$box¶
-
$box
¶ New in version 1.4.
The
$box
operator specifies a rectangular shape for the$within
operator in geospatial queries. To use the$box
operator, you must specify the bottom left and top right corners of the rectangle in an array object. Consider the following example:This will return all the documents that are within the box having points at:
[0,0]
,[0,100]
,[100,0]
, and[100,100]
.Changed in version 2.2.3: Before 2.2.3, a geospatial index must exist on a field holding coordinates before using any of the geolocation query operators. After 2.2.3, applications may use geolocation query operators without having a geospatial index; however, geospatial indexes will support much faster geospatial queries than the unindexed equivalents.
Note
A geospatial index must exist on a field and the field must hold coordinates before you can use any of the geolocation query operators.