Update reference docs for geocentroid aggregation. (#24141)

This includes a link to the Wikipedia page explaining what a centroid
is.

Closes #24140
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Andrew Selden 2017-04-17 18:27:43 -07:00 committed by Nik Everett
parent a8017ff020
commit f8b15abe9a
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[[search-aggregations-metrics-geocentroid-aggregation]]
=== Geo Centroid Aggregation
A metric aggregation that computes the weighted centroid from all coordinate values for a <<geo-point>> field.
A metric aggregation that computes the weighted https://en.wikipedia.org/wiki/Centroid[centroid] from all coordinate values for a <<geo-point>> field.
Example: