Missing results due to geo proximity formula (store locator)

Question

OK - I\'ve been wrestling with this for about 3 months on and off and since I\'ve exhausted every geo proximity formula out there that I\'ve come across and I\'m no closer to ge

Answer 1

Thinking a little laterally I've come up with a 'sort of' solution to the problem of the missing markers. The two equations I posted originally gave the correct results but each missed out either markers close to the target or on the edges of the search radius

It's not very elegant but I figured that running both equations and producing 2 arrays which I then combined (removing any duplicates) would give me all the markers I'm looking for. This does work (obviously a performance hit but it's not a high traffic application) so I'll work with this for the time being but I'm still after a more practical solution if anyone has one!