HBase Heatmaps ============== GeoMesa on HBase can leverage server side processing to accelerate heatmap (density) queries. GeoMesa uses a custom coprocessor running on the HBase Region Servers so that density calculation are done at the data. The per-region results are then returned to GeoServer, combined there, and served. This functionality can be accessed using the ``geomesa:Density`` WPS process. In order to use the density process you must: * Install the server side code on your HBase cluster :ref:`hbase_deploy_distributed_runtime` * Register the coprocessors site wide or for the table you wish to use :ref:`registering_coprocessors` * Install the WPS processes in GeoServer :ref:`geomesa_process` * Install the heatmap SLD in GeoServer :ref:`install-heatmap-sld` .. _install-heatmap-sld: Install Heatmap SLD ------------------- In order to style the density result to produce a heatmap, GeoServer needs a Style Layer Descriptor (SLD). To start, add a new SLD style to GeoServer named "heatmap" and use this sld :download:`heatmap.sld ` Instruction on how to install SLDs can be found here `GeoServer Styles `_. Now you can change the style parameter to be ``styles=heatmap`` in the Layer Preview or PNG preview in GeoServer. .. note:: You may have to change the layer configuration to support publishing the heatmap style.