This visualisation displays grid of evenly sized hexagonal cells. Unlike administrative units, grid ignores any natural or man-made borders. Hexagonal grid provides uniform overview of the distribution of selected phenomena, which makes it the right choice for spatial analysis.

Click on any grid in the map to get the detail about it on the dashboard. Using shift+click you can select several grids.  

If there's a link between data displayed in map and markers, you can click on any marker to display its "catchment area".

There are several sizes of grid, every size brings you different insight on data in map. You can change the size of grid using Granularity menu.