Reputation: 1112
calculating proximity/distance of multiple locations.?
//windows phone 7 c#//
Scenario: User is within 20-30 foot if one of many locations(which gt updated).
- How do i calculate distance/proximity of multiple locations to the user location(efficiently) as i want the app to do stuff if the user id within 20-30 foot of a location(though the app will have to check them all).
any help or advice is welcome thanks.
(*note i will be receiving updates(via azure service) on the locations as they will change. i include this information as it may relate to ideas about efficiency)
Upvotes: 1
Views: 507
Answers (1)
Reputation: 793
The answer is highly subjective because you haven't really defined what you've already attempted, how efficient it really needs to be, or what kind of data you're working with.
I assume you're using Latitude/Longitude. If that is the case, is there a problem using a simple Lat/Long distance calculation? See here: http://www.movable-type.co.uk/scripts/latlong.html
I can't imagine that would be very inefficient unless you were doing it on the server constantly for many, many users.
Upvotes: 1
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