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+# Geo Centroid Aggregation
+
+> More info about histogram aggregation is in the [official elasticsearch docs][1]
+
+A metric aggregation that computes the weighted centroid from all coordinate values for a Geo-point datatype field.
+The data type of the field that is specified for the aggregation must be `geo-point`.
+
+## Simple example
+
+```JSON
+{
+    "query" : {
+        "match" : { "crime" : "burglary" }
+    },
+    "aggs" : {
+        "centroid" : {
+            "geo_centroid" : {
+                "field" : "location"
+            }
+        }
+    }
+}
+```
+
+And now the query via DSL:
+
+```php
+$geoCentroidAggregation = new GeoCentroidAggregation('centroid', 'location');
+
+$search = new Search();
+$search->addQuery(new MatchQuery('crime', 'burglary'));
+$search->addAggregation($geoCentroidAggregation);
+
+$queryArray = $search->toArray();
+```
+
+## Advanced example
+
+The query provides more information when when combined as a sub-aggregation to other bucket aggregations. Here is an example of that:
+
+```JSON
+
+{
+    "query" : {
+        "match" : { "crime" : "burglary" }
+    },
+    "aggs" : {
+        "towns" : {
+            "terms" : { "field" : "town" },
+            "aggs" : {
+                "centroid" : {
+                    "geo_centroid" : { "field" : "location" }
+                }
+            }
+        }
+    }
+}
+
+```
+And now via DSL:
+
+```php
+$geoCentroidAggregation = new GeoCentroidAggregation('centroid', 'location');
+$termsAggregation = new TermsAggregation('towns', 'town');
+$termsAggregation->addAggregation($geoCentroidAggregation);
+
+$search = new Search();
+$search->addQuery(new MatchQuery('crime', 'burglary'));
+$search->addAggregation($termsAggregation);
+
+$queryArray = $search->toArray();
+```
+
+[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-geocentroid-aggregation.html