[[query-dsl-geo-polygon-query]]
=== Geo Polygon Query

A query allowing to include hits that only fall within a polygon of
points. Here is an example:

[source,js]
--------------------------------------------------
{
    "bool" : {
        "query" : {
            "match_all" : {}
        },
        "filter" : {
            "geo_polygon" : {
                "person.location" : {
                    "points" : [
                        {"lat" : 40, "lon" : -70},
                        {"lat" : 30, "lon" : -80},
                        {"lat" : 20, "lon" : -90}
                    ]
                }
            }
        }
    }
}
--------------------------------------------------

[float]
==== Query Options

[cols="<,<",options="header",]
|=======================================================================
|Option |Description
|`_name` |Optional name field to identify the filter

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

[float]
==== Allowed Formats

[float]
===== Lat Long as Array

Format in `[lon, lat]`, note, the order of lon/lat here in order to
conform with http://geojson.org/[GeoJSON].

[source,js]
--------------------------------------------------
{
    "bool" : {
        "must" : {
            "match_all" : {}
        },
        "filter" : {
            "geo_polygon" : {
                "person.location" : {
                    "points" : [
                        [-70, 40],
                        [-80, 30],
                        [-90, 20]
                    ]
                }
            }
        }
    }
}
--------------------------------------------------

[float]
===== Lat Lon as String

Format in `lat,lon`.

[source,js]
--------------------------------------------------
{
    "bool" : {
        "must" : {
            "match_all" : {}
        },
        "filter" : {
            "geo_polygon" : {
                "person.location" : {
                    "points" : [
                        "40, -70",
                        "30, -80",
                        "20, -90"
                    ]
                }
            }
        }
    }
}
--------------------------------------------------

[float]
===== Geohash

[source,js]
--------------------------------------------------
{
    "bool" : {
        "must" : {
            "match_all" : {}
        },
        "filter" : {
            "geo_polygon" : {
                "person.location" : {
                    "points" : [
                        "drn5x1g8cu2y",
                        "30, -80",
                        "20, -90"
                    ]
                }
            }
        }
    }
}
--------------------------------------------------

[float]
==== geo_point Type

The query *requires* the <<geo-point,`geo_point`>> type to be set on the
relevant field.

[float]
==== 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.