Executing the geo distance aggregation
Among the other standard types that we have seen in previous aggregations, ElasticSearch allows executing aggregations against a geo point: geo distance aggregations. This is an evolution of the previously discussed range aggregations built to work on geo locations.
Getting ready
You need a working ElasticSearch cluster and an index populated with the script (executing_geo_distance_aggregations.sh) available at https://github.com/aparo/elasticsearch-cookbook-second-edition.
How to do it...
Using the position field available in documents, we will aggregate the other documents in four ranges:
- Fewer than 10 kilometers
- From 10 to 20 kilometers
- From 20 to 50 kilometers
- From 50 to 100 kilometers
- Above 100 kilometers
To execute geo distance aggregations, we will perform the steps given as follows:
- To achieve these goals, we will create a geo distance aggregation with a code similar to this one:
curl -XGET 'http://127.0.0.1:9200/test-index/test-type/_search?pretty...
