175 lines
4.0 KiB
Plaintext
175 lines
4.0 KiB
Plaintext
[[query-dsl-geo-distance-query]]
|
|
== Geo Distance Query
|
|
|
|
Filters documents that include only hits that exists within a specific
|
|
distance from a geo point. Assuming the following indexed json:
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
{
|
|
"pin" : {
|
|
"location" : {
|
|
"lat" : 40.12,
|
|
"lon" : -71.34
|
|
}
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
|
|
Then the following simple query can be executed with a `geo_distance`
|
|
filter:
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
{
|
|
"filtered" : {
|
|
"query" : {
|
|
"match_all" : {}
|
|
},
|
|
"filter" : {
|
|
"geo_distance" : {
|
|
"distance" : "200km",
|
|
"pin.location" : {
|
|
"lat" : 40,
|
|
"lon" : -70
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
|
|
[float]
|
|
=== Accepted Formats
|
|
|
|
In much the same way the `geo_point` type can accept different
|
|
representation of the geo point, the filter can accept it as well:
|
|
|
|
[float]
|
|
==== Lat Lon As Properties
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
{
|
|
"filtered" : {
|
|
"query" : {
|
|
"match_all" : {}
|
|
},
|
|
"filter" : {
|
|
"geo_distance" : {
|
|
"distance" : "12km",
|
|
"pin.location" : {
|
|
"lat" : 40,
|
|
"lon" : -70
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
|
|
[float]
|
|
==== Lat Lon As Array
|
|
|
|
Format in `[lon, lat]`, note, the order of lon/lat here in order to
|
|
conform with http://geojson.org/[GeoJSON].
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
{
|
|
"filtered" : {
|
|
"query" : {
|
|
"match_all" : {}
|
|
},
|
|
"filter" : {
|
|
"geo_distance" : {
|
|
"distance" : "12km",
|
|
"pin.location" : [-70, 40]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
|
|
[float]
|
|
==== Lat Lon As String
|
|
|
|
Format in `lat,lon`.
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
{
|
|
"filtered" : {
|
|
"query" : {
|
|
"match_all" : {}
|
|
},
|
|
"filter" : {
|
|
"geo_distance" : {
|
|
"distance" : "12km",
|
|
"pin.location" : "40,-70"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
|
|
[float]
|
|
==== Geohash
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
{
|
|
"filtered" : {
|
|
"query" : {
|
|
"match_all" : {}
|
|
},
|
|
"filter" : {
|
|
"geo_distance" : {
|
|
"distance" : "12km",
|
|
"pin.location" : "drm3btev3e86"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
|
|
[float]
|
|
=== Options
|
|
|
|
The following are options allowed on the filter:
|
|
|
|
[horizontal]
|
|
|
|
`distance`::
|
|
|
|
The radius of the circle centred on the specified location. Points which
|
|
fall into this circle are considered to be matches. The `distance` can be
|
|
specified in various units. See <<distance-units>>.
|
|
|
|
`distance_type`::
|
|
|
|
How to compute the distance. Can either be `sloppy_arc` (default), `arc` (slightly more precise but significantly slower) or `plane` (faster, but inaccurate on long distances and close to the poles).
|
|
|
|
`optimize_bbox`::
|
|
|
|
Whether to use the optimization of first running a bounding box check
|
|
before the distance check. Defaults to `memory` which will do in memory
|
|
checks. Can also have values of `indexed` to use indexed value check (make
|
|
sure the `geo_point` type index lat lon in this case), or `none` which
|
|
disables bounding box optimization.
|
|
|
|
|
|
[float]
|
|
=== geo_point Type
|
|
|
|
The filter *requires* the `geo_point` type to be set on the relevant
|
|
field.
|
|
|
|
[float]
|
|
=== 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.
|
|
|