[Enhancement] Geospatial Aggregations

[hokieg3n1us]

GeoHash Aggregation - Expose API methods for binning data using geohashes through a Spatio or SpatioTemporal query at varying resolutions. Results should be a map of geohash keys to binned counts.

Hex Bin Aggregation – Expose API methods for binning data using hex bins through a Spatio or SpatioTemporal query at varying resolutions. Results should be a map of hex cell addresses to binned counts. Consider utilizing Uber’s H3 indexing library for this functionality.

Integrate with GeoServer through a WPS process specified by an SLD function, for visualizing the binned data as polygons, with the resolution of the geohash or hex bin tied to GeoServer’s concepts of scale/zoom.