Andres Colonia kalelc

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j05h / distance.rb

Created November 11, 2010 23:20

Haversine formula (http://en.wikipedia.org/wiki/Haversine_formula) in Ruby

	class Numeric
	def to_rad
	self * Math::PI / 180
	end
	end

	# http://www.movable-type.co.uk/scripts/latlong.html
	# loc1 and loc2 are arrays of [latitude, longitude]
	def distance loc1, loc2
	lat1, lon1 = loc1