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Hot Spot/Density-like Analysis for Overlapping Polygons

Question asked by jason.rogers_afdcgs on Sep 19, 2019

I have a large dataset of polygons and need to identify the overlaps for two purposes:


1) To create a display similar to a hot spot or density (shows the highest concentrations of polygon coverage).


2) For use in spatial joins with point features in order to answer questions such as: this point was intersected by ## polygons.


The first method I found was to run a Union, then a Dissolve. The problem is that this method takes a LONG time to run, and can actually run out of RAM, even with my 64GB system.


Does anyone have a better methodology?  Thanks for the advice!