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Query Reference

Operators & Collectors

Operators & Collectors

`geoWithin` Operator

Definition

geoWithin

The geoWithin operator supports querying geographic points within a given geometry. Only points are returned, even if indexShapes value is true in the index definition.

You can query points within a:

Circle
Bounding box
Polygon

When specifying the coordinates to search, longitude must be specified first and then the latitude. Longitude values can be between -180 and 180, both inclusive. Latitude values can be between -90 and 90, both inclusive. Coordinate values can be integers or doubles.

Note

MongoDB Search does not support the following:

Non-default coordinate reference system (CRS)
Planar XY coordinate system (2 dimensional)
Coordinate pairs Point notation (that is, pointFieldName: [12, 34])

Syntax

geoWithin has the following syntax:

{
  "$search": {
     "index": <index name>, // optional, defaults to "default"
     "geoWithin": {
        "path": "<field-to-search>",
        "box | circle | geometry": <object>,
        "score": <score-options>
     }
  }
}

Options

geoWithin uses the following terms to construct a query:

Field	Type	Description	Necessity
`box`	object	Object that specifies the bottom left and top right GeoJSON points of a box to search within. The object takes the following fields: `bottomLeft` - Bottom left GeoJSON point. `topRight` - Top right GeoJSON point. To learn how to specify GeoJSON data inside a GeoJSON object, see GeoJSON Objects. Either `box`, `circle`, or `geometry` is required.	conditional
`circle`	object	Object that specifies the center point and the radius in meters to search within. The object contains the following GeoJSON fields: `center` - Center of the circle specified as a GeoJSON point. `radius` - Radius, which is a number, specified in meters. Value must be greater than or equal to `0`. To learn how to specify GeoJSON data inside a GeoJSON object, see GeoJSON Objects. Either `circle`, `box`, or `geometry` is required.	conditional
`geometry`	GeoJSON object	GeoJSON object that specifies the MultiPolygon or Polygon to search within. The polygon must be specified as a closed loop where the last position is the same as the first position. When calculating geospatial results, MongoDB Search geoShape and geoWithin operators and MongoDB $geoIntersects operator use different geometries. This difference can be seen in how MongoDB Search and MongoDB draw polygonal edges. MongoDB Search draws polygons based on Cartesian distance, which is the shortest line between two points in the coordinate reference system. MongoDB draws polygons using the geodesic mode based on 2dsphere indexes that is built on top of a third-party library for geodesic types, or the flat mode, from 2d indexes. To learn more, see GeoJSON Objects. MongoDB Search and MongoDB could return different results for geospatial queries involving polygons. To learn how to specify GeoJSON data inside a GeoJSON object, see GeoJSON Objects. Either `geometry`, `box`, or `circle` is required.	conditional
`path`	string or array of strings	Indexed geo type field or fields to search.	yes
`score`	object	Score to assign to matching search results. By default, the score in the results is `1`. You can modify the score using the following options: `boost`: multiply the result score by the given number. `constant`: replace the result score with the given number. `function`: replace the result score with the given expression. For information on using `score` in your query, see Score the Documents in the Results.	no

Examples

The following examples use the listingsAndReviews collection in the sample_airbnb database. If you have the sample dataset on your cluster, you can create a custom MongoDB Search index for geo type and run the example queries on your cluster.

Use the following sample index definition for indexing the address.location field in the listingsAndReviews collection:

1 {
2   "mappings": {
3     "fields": {
4       "address": {
5         "fields": {
6           "location": {
7             "type": "geo"
8           }
9         },
10         "type": "document"
11       },
12       "property_type": {
13         "type": "token"
14       }
15     }
16   }
17 }

Interface

`box` Example

The following query uses the geoWithin operator with the box field to search for properties within a bounding box in Australia.

The query includes a:

$limit stage to limit the output to 3 results.
$project stage to exclude all fields except name and address.

Note

You don't need to specify indexes named default in your MongoDB Search query. If your index has any other name, you must specify the index field.

Basic Example

Metadata Example

`circle` Example

The following query uses the geoWithin operator with the circle field to search for properties within one mile radius of specified coordinates in Canada.

The query includes a:

$limit stage to limit the output to 3 results.
$project stage to exclude all fields except name and address, and for Compass examples, the required steps reference.

Note

You don't need to specify indexes named default in your MongoDB Search query. If your index has any other name, you must specify the index field.

`geometry` Examples

The following examples use the geoWithin operator with the geometry field to search for properties in Hawaii. The type field specifies whether the area is a GeoJSON Polygon or MultiPolygon.

Note

You don't need to specify indexes named default in your MongoDB Search query. If your index has any other name, you must specify the index field.

Back

geoShape

hasAncestor

1	{
2	"mappings": {
3	"fields": {
4	"address": {
5	"fields": {
6	"location": {
7	"type": "geo"
8	}
9	},
10	"type": "document"
11	},
12	"property_type": {
13	"type": "token"
14	}
15	}
16	}
17	}

Definition

Note

Syntax

Options

Examples

box Example

Note

Basic Example

Metadata Example

circle Example

Note

geometry Examples

Note

`box` Example

`circle` Example

`geometry` Examples