geolocation-center

To find nearby centers using GPS coordinates and PostGIS, you request browser geolocation permission and send the latitude and longitude to the `/api/v1/centers/nearby` endpoint. The system then uses PostGIS `ST_DWithin` and `ST_Distance` for spatial queries to return matching locations.

The best way to handle auto-expanding radius searches in spatial queries is to use a system that dynamically adjusts the search radius. This ensures sufficient nearby center results are returned based on the user's current GPS coordinates and the density of available locations.

Center deduplication works by comparing proximity, name, and address matching to prevent duplicate physical center entries. This approach ensures that spatial queries return unique locations even when multiple map API records represent the same point of interest.

Yes, you can use the browser Geolocation API with PostgreSQL for nearby searches by integrating it with the PostGIS extension. This combination allows web applications to fetch user coordinates and perform accurate spatial queries like `ST_DWithin` to find relevant physical locations.

To populate initial center data from map APIs for spatial queries, you use map API seeding features. This process extracts initial physical location data from external map services and stores it in PostgreSQL/PostGIS to serve as the baseline dataset for nearby center searches.