method

r

v1_9_2_180 - Show latest stable - Class: Vector

r()

public

Returns the modulus (Pythagorean distance) of the vector.

Vector[5,8,2].r => 9.643650761

# File lib/matrix.rb, line 1466
  def r
    Math.sqrt(@elements.inject(0) {|v, e| v + e*e})
  end