Here is a step by step on dealing with the display of a large number of lat/longs (using ElasticSearch):
1. Roll up the lat/longs to 2-3 decimal points, with a count for each rounded lat/long.
2. Use the Geo Clusters/Custom Maps visualization. Set Point Styles to ‘None’, count field to the count/total field from #1 above.
4. Setup a direct ElasticSearch Query, with a runtime parameter called $c9_bounds$. Note that Lat/Longs must be in Geo Point data type in Elastic.
Create a Map Cluster visualization for this query, with appropriate Zoom levels.
5. Set up a drilldown from the parent cluster into the new widget, without any filter parameters.
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