method

r

v1_9_1_378 - 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 1310
  def r
    v = 0
    for e in @elements
      v += e*e
    end
    return Math.sqrt(v)
  end