Geo Distance Queryedit

Filters documents that include only hits that exists within a specific distance from a geo point. Assuming the following indexed json:

{
    "pin" : {
        "location" : {
            "lat" : 40.12,
            "lon" : -71.34
        }
    }
}

Then the following simple query can be executed with a geo_distance filter:

{
    "bool" : {
        "must" : {
            "match_all" : {}
        },
        "filter" : {
            "geo_distance" : {
                "distance" : "200km",
                "pin.location" : {
                    "lat" : 40,
                    "lon" : -70
                }
            }
        }
    }
}

Accepted Formatsedit

In much the same way the geo_point type can accept different representation of the geo point, the filter can accept it as well:

Lat Lon As Propertiesedit
{
    "bool" : {
        "must" : {
            "match_all" : {}
        },
        "filter" : {
            "geo_distance" : {
                "distance" : "12km",
                "pin.location" : {
                    "lat" : 40,
                    "lon" : -70
                }
            }
        }
    }
}
Lat Lon As Arrayedit

Format in [lon, lat], note, the order of lon/lat here in order to conform with GeoJSON.

{
    "bool" : {
        "must" : {
            "match_all" : {}
        },
        "filter" : {
            "geo_distance" : {
                "distance" : "12km",
                "pin.location" : [-70, 40]
            }
        }
    }
}
Lat Lon As Stringedit

Format in lat,lon.

{
    "bool" : {
        "must" : {
            "match_all" : {}
        },
        "filter" : {
            "geo_distance" : {
                "distance" : "12km",
                "pin.location" : "40,-70"
            }
        }
    }
}
Geohashedit
{
    "bool" : {
        "must" : {
            "match_all" : {}
        },
        "filter" : {
            "geo_distance" : {
                "distance" : "12km",
                "pin.location" : "drm3btev3e86"
            }
        }
    }
}

Optionsedit

The following are options allowed on the filter:

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.

_name

Optional name field to identify the query

coerce

Set to true to normalize longitude and latitude values to a standard -180:180 / -90:90 coordinate system. (default is false).

ignore_malformed

Set to true to accept geo points with invalid latitude or longitude (default is false).

geo_point Typeedit

The filter requires the geo_point type to be set on the relevant field.

Multi Location Per Documentedit

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.