My app shows a list of marinas (via an API pull - the data resides in a Google Sheet). I wrote the API code with some conditions to filter the data - after that, the user everything in the list.
However, I want to give the user the option to refine the list by distance from a location (this should default to the user’s current device location). Ideally using a slider to choose distance (this should default to 100 miles and that would be the maximum on the slider).
Suggestions on how I would build this?