In this episode, I will show you how to query Firebase data based on its proximity to a set of GPS coordinates. We use Angular Google Maps (AGM) to handle the map building process, then throw in GeoFire to make realtime location-driven queries. Check out the full tutorial code here: https://angularfirebase.com/lessons/geofire-location-queries-with-google-maps/
Angular Google Maps: https://angular-maps.com/
Firebase GeoFire: https://github.com/firebase/geofire