Choropleth maps are similar to heat maps, but with regions defined by geometry, rather than a grid. This demo uses Leaflet.JS to build a Choropleth map that's driven from FileMaker data.
Updating the Density value for a State will instantly reflect on the map. To connect your data, just relate it to the State table by the State Name and change the Density field to be a summary calc based on your other table.
See the video demo and walkthrough here: FileMaker Choropleth Map Using LeafletJS In a Web Viewer