Sorry, I'm explaining myself poorly.
I have a database with several lat&longs stored in it, let's say they
correspond to petrol stations (just an example) and then the user
introduces his location (40.4167413, -3.7032498) I would like to know
wich calculation should I make to give him the info of all the lat&longs
in my DB that can be found in a radius of 1km taking his position as the
center.
So it must be something like this:
All the lats between X and Y.
And all the longs between X and Y.
What I don't know is the correspondency between this (40.4167413,
-3.7032498) and kilometers if it exists.


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