Method: Math.distance

Defined in:
lib/standard/facets/math/distance.rb

.distance(p, q) ⇒ Object

Calculates the Euclidean Distance between points p and q.

p, q is assumed to described coordinates in N-dimensions, e. g.:

Math.distance([1, 1], [2, 2])          # 2D coordinates
Math.distance([1, 1, 1], [2, 2, 2])    # 3D coordinates

If N is 1, then ::distance may also be invoked like so:

Math.distance(1, 1)



14
15
16
17
 
# File 'lib/standard/facets/math/distance.rb', line 14

def self.distance(p, q)
  p, q = [p].flatten, [q].flatten
  sqrt(p.zip(q).inject(0){ |sum, coord| sum + (coord.first - coord.last)**2 })
end