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geoWithin

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.

Info With Circle IconCreated with Sketch.Note

Atlas 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])

geoWithin has the following syntax:

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

geoWithin uses the following terms to construct a query:

FieldTypeDescriptionNecessity
boxobject

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.

Either box, circle, or geometry is required.

conditional
circleobject

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.

Either circle, box, or geometry is required.

conditional
geometryGeoJSON 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.

Either geometry, box, or circle is required.

conditional
pathstring or array of stringsIndexed geo type field or fields to search. See Path Construction.yes
scoreobject

Score assigned to matching search results. The score in the results is always 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.

For information on using score in your query, see Scoring.

no

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 Atlas Search index for geo type and run the queries on your cluster. The following is a 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    }
13  }
14}

The Tutorial: Create and Query an Atlas Search Index contains instructions for loading the sample dataset, creating an index definition, and running Atlas Search queries.

The following example uses the geoWithin operator to search for properties within a bounding box in Australia. It includes a $limit stage to limit the output to 3 results and a $project stage to exclude all fields except name and address.

1db.listingsAndReviews.aggregate([
2  {
3    "$search": {
4      "geoWithin": {
5        "path": "address.location",
6        "box": {
7          "bottomLeft": {
8            "type": "Point",
9            "coordinates": [112.467, -55.050]
10          },
11          "topRight": {
12            "type": "Point",
13            "coordinates": [168.000, -9.133]
14          }
15        }
16      }
17    }
18  },
19  {
20    $limit: 3
21  },
22  {
23    $project: {
24      "_id": 0,
25      "name": 1,
26      "address": 1
27    }
28  }
29])

The previous query returns the following results:

1{
2  "name" : "Surry Hills Studio - Your Perfect Base in Sydney",
3  "address" : {
4    "street" : "Surry Hills, NSW, Australia",
5    "suburb" : "Darlinghurst",
6    "government_area" : "Sydney",
7    "market" : "Sydney",
8    "country" : "Australia",
9    "country_code" : "AU",
10    "location" : {
11      "type" : "Point",
12      "coordinates" : [ 151.21554, -33.88029 ],
13      "is_location_exact" : true
14    }
15  }
16}
17{
18  "name" : "Sydney Hyde Park City Apartment (checkin from 6am)",
19  "address" : {
20    "street" : "Darlinghurst, NSW, Australia",
21    "suburb" : "Darlinghurst",
22    "government_area" : "Sydney",
23    "market" : "Sydney",
24    "country" : "Australia",
25    "country_code" : "AU",
26    "location" : {
27      "type" : "Point",
28      "coordinates" : [ 151.21346, -33.87603 ],
29      "is_location_exact" : false
30    }
31  }
32}
33{
34  "name" : "THE Place to See Sydney's FIREWORKS",
35  "address" : {
36    "street" : "Rozelle, NSW, Australia",
37    "suburb" : "Lilyfield/Rozelle",
38    "government_area" : "Leichhardt",
39    "market" : "Sydney",
40    "country" : "Australia",
41    "country_code" : "AU",
42    "location" : {
43      "type" : "Point",
44      "coordinates" : [ 151.17956, -33.86296 ],
45      "is_location_exact" : true
46    }
47  }
48}

The following example uses the geoWithin operator to search for properties within one mile radius of specified coordinates in Canada. It includes a $limit stage to limit the output to 3 results and a $project stage to exclude all fields except name and address.

1db.listingsAndReviews.aggregate([
2  {
3    "$search": {
4      "geoWithin": {
5        "circle": {
6          "center": {
7            "type": "Point",
8            "coordinates": [-73.54, 45.54]
9          },
10          "radius": 1600
11        },
12        "path": "address.location"
13      }
14    }
15  },
16  {
17    $limit: 3
18  },
19  {
20    $project: {
21      "_id": 0,
22      "name": 1,
23      "address": 1
24    }
25  }
26])

The query returns the following results:

1{
2  "name" : "Ligne verte - à 15 min de métro du centre ville.",
3  "address" : {
4    "street" : "Montréal, Québec, Canada",
5    "suburb" : "Hochelaga-Maisonneuve",
6    "government_area" : "Mercier-Hochelaga-Maisonneuve",
7    "market" : "Montreal",
8    "country" : "Canada",
9    "country_code" : "CA",
10    "location" : {
11      "type" : "Point",
12      "coordinates" : [ -73.54949, 45.54548 ],
13      "is_location_exact" : false
14    }
15  }
16}
17{
18  "name" : "Belle chambre à côté Metro Papineau",
19  "address" : {
20    "street" : "Montréal, QC, Canada",
21    "suburb" : "Gay Village",
22    "government_area" : "Ville-Marie",
23    "market" : "Montreal",
24    "country" : "Canada",
25    "country_code" : "CA",
26    "location" : {
27      "type" : "Point",
28      "coordinates" : [ -73.54985, 45.52797 ],
29      "is_location_exact" : false
30    }
31  }
32}
33{
34  "name" : "L'IDÉAL, ( à 2 min du métro Pie-IX ).",
35  "address" : {
36    "street" : "Montréal, Québec, Canada",
37    "suburb" : "Mercier-Hochelaga-Maisonneuve",
38    "government_area" : "Mercier-Hochelaga-Maisonneuve",
39    "market" : "Montreal",
40    "country" : "Canada",
41    "country_code" : "CA",
42    "location" : {
43      "type" : "Point",
44      "coordinates" : [ -73.55208, 45.55157 ],
45      "is_location_exact" : true
46    }
47  }
48}

The following examples use the geoWithin operator to search for properties in Hawaii. The queries includes a $limit stage to limit the output to 3 results and a $project stage to exclude all fields except name and address.

1 db.listingsAndReviews.aggregate([
2   {
3     "$search": {
4       "geoWithin": {
5         "geometry": {
6           "type": "Polygon",
7           "coordinates": [[[ -161.323242, 22.512557 ],
8                          [ -152.446289, 22.065278 ],
9                          [ -156.09375, 17.811456 ],
10                          [ -161.323242, 22.512557 ]]]
11         },
12         "path": "address.location"
13       }
14     }
15   },
16   {
17     $limit: 3
18   },
19   {
20     $project: {
21       "_id": 0,
22       "name": 1,
23       "address": 1
24     }
25   }
26 ])

The query returns the following results:

1{
2  "name" : "Ocean View Waikiki Marina w/prkg",
3  "address" : {
4    "street" : "Honolulu, HI, United States",
5    "suburb" : "Oʻahu",
6    "government_area" : "Primary Urban Center",
7    "market" : "Oahu",
8    "country" : "United States",
9    "country_code" : "US",
10    "location" : {
11      "type" : "Point",
12      "coordinates" : [ -157.83919, 21.28634 ],
13      "is_location_exact" : true
14    }
15  }
16}
17{
18  "name" : "Kailua-Kona, Kona Coast II 2b condo",
19  "address" : {
20    "street" : "Kailua-Kona, HI, United States",
21    "suburb" : "Kailua/Kona",
22    "government_area" : "North Kona",
23    "market" : "The Big Island",
24    "country" : "United States",
25    "country_code" : "US",
26    "location" : {
27      "type" : "Point",
28      "coordinates" : [ -155.96445, 19.5702 ],
29      "is_location_exact" : true
30    }
31  }
32}
33{
34  "name" : "LAHAINA, MAUI! RESORT/CONDO BEACHFRONT!! SLEEPS 4!",
35  "address" : {
36    "street" : "Lahaina, HI, United States",
37    "suburb" : "Maui",
38    "government_area" : "Lahaina",
39    "market" : "Maui",
40    "country" : "United States",
41    "country_code" : "US",
42    "location" : {
43      "type" : "Point",
44      "coordinates" : [ -156.68012, 20.96996 ],
45      "is_location_exact" : true
46    }
47  }
48}

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