Geo-distance query
Filters documents that include only hits that exists within a specific distance from a geo point. Assuming the following mapping and indexed document:
PUT /my_locations
{
"mappings": {
"properties": {
"pin": {
"properties": {
"location": {
"type": "geo_point"
}
}
}
}
}
}
PUT /my_locations/_doc/1
{
"pin": {
"location": {
"lat": 40.12,
"lon": -71.34
}
}
}
Then the following simple query can be executed with a geo_distance
filter:
GET /my_locations/_search
{
"query": {
"bool": {
"must": {
"match_all": {}
},
"filter": {
"geo_distance": {
"distance": "200km",
"pin.location": {
"lat": 40,
"lon": -70
}
}
}
}
}
}
Accepted Formats
In much the same way the geo_point
type can accept different representations of the geo point, the filter can accept it as well:
Lat Lon As Properties
GET /my_locations/_search
{
"query": {
"bool": {
"must": {
"match_all": {}
},
"filter": {
"geo_distance": {
"distance": "12km",
"pin.location": {
"lat": 40,
"lon": -70
}
}
}
}
}
}
Lat Lon As Array
Format in [lon, lat]
, note, the order of lon/lat here in order to conform with GeoJSON.
GET /my_locations/_search
{
"query": {
"bool": {
"must": {
"match_all": {}
},
"filter": {
"geo_distance": {
"distance": "12km",
"pin.location": [ -70, 40 ]
}
}
}
}
}
Lat Lon As String
Format in lat,lon
.
GET /my_locations/_search
{
"query": {
"bool": {
"must": {
"match_all": {}
},
"filter": {
"geo_distance": {
"distance": "12km",
"pin.location": "40,-70"
}
}
}
}
}
Geohash
GET /my_locations/_search
{
"query": {
"bool": {
"must": {
"match_all": {}
},
"filter": {
"geo_distance": {
"distance": "12km",
"pin.location": "drm3btev3e86"
}
}
}
}
}
Options
The following are options allowed on the filter:
| The radius of the circle centred on the specified location. Points which fall into this circle are considered to be matches. The |
| How to compute the distance. Can either be |
| Optional name field to identify the query |
| Set to |
geo_point Type
The filter requires the geo_point
type to be set on the relevant field.
Multi Location Per Document
The geo_distance
filter can work with multiple locations / points per document. Once a single location / point matches the filter, the document will be included in the filter.
Ignore Unmapped
When set to true
the ignore_unmapped
option will ignore an unmapped field and will not match any documents for this query. This can be useful when querying multiple indexes which might have different mappings. When set to false
(the default value) the query will throw an exception if the field is not mapped.