I have one layer of polygons that stretch across the U.S., and another layer of all counties in the U.S. In the counties layer is a column with population density for each county.
What I am trying to do is to filter the data by polygons that intersect with a county that has a specific population density. For example, I want to highlight all polygons that intersect a county that has a pop density of <50. Ideally, it would be nice to have it create a new layer based on these filtered polygons so that I could color them differently.
Is this possible to do in QGIS using an expression of some kind?