Using the geo_polygon filter

The previous recipe, Using the geo_bounding_box filter shows how to filter on a square section, which is the most common case. ElasticSearch provides a way to filter the user defined polygonal shapes via the geo_polygon filter.

Getting ready

You need a working ElasticSearch cluster and the data populated with the geo populate script.

How to do it...

Searching documents in which pin.location is part of a triangle (a shape made up of three GeoPoints), is done by using a similar query as follows:

curl -XGET http://127.0.0.1:9200/test-mindex/_search -d '{
    "query": {
        "filtered": {
            "filter": {
                "geo_bounding_box": {
                    "pin.location": {
                        "points": [
                            {
                                "lat": 50,
                                "lon": -30
                            },
                            {
                                "lat": 30,
                          ...