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I am querying a SQLite database for Latitude/Longitude details.
SELECT * FROM tblMain
where latitude > -33.866 and latitude <=-33.865
and longitude > 151.20 and longitude <= 151.209
I wish to give the user a range to choose for the query (1 km, 2 km etc)
How many meters are in each Latitude / Longitide so I can calculate the resolution of the query?
You can solve this with a little bit of trigonometry and an approximation for the earths radius.
It can also be useful to remember that 1 arc second is about 30m