Location and Geocoding - Refining search results.

#1

Hey, I’m about to implement location into my app and I’m after some advice about how to handle geocoding.

Users will be able to refine search results based on distance and I will be using the latlng points to calculate this. I know I can treat the latlng points as 2D vectors, then do the calculations to work out the distance using pythag theorem on the difference. However, I wondered whether there is a built in method to work this out.

The other issue I’m having is the Geocoding aspect of it, with regards to converting a postcode to the latlng points I require. the docs state that this is a resource heavy method. In what sense is this resource heavy?

Sorry if I’m a little unclear with what I’m asking, Thanks

#2

Refining of search results beyond a simple scale sounds like something you should be doing on the server side, perhaps using a database with geospatial indexing. So that would be outside the scope of Expo (for your client) itself.

You can find more information about the resource intensiveness here:

closed #4

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