method

+

v1_8_7_72 - Show latest stable - 0 notes - Class: Matrix

1_8_6_287 (0)
1_8_7_72 (0)
1_8_7_330 (0)
1_9_1_378 (-6)
1_9_2_180 (0)
1_9_3_125 (0)
1_9_3_392 (0)
2_1_10 (0)
2_2_9 (0)
2_4_6 (0)
2_5_5 (0)
2_6_3
What's this?

+(m) public

Matrix addition.

  Matrix.scalar(2,5) + Matrix[[1,0], [-4,7]]
    =>  6  0
       -4 12

Show source

# File lib/matrix.rb, line 494
  def +(m)
    case m
    when Numeric
      Matrix.Raise ErrOperationNotDefined, "+"
    when Vector
      m = Matrix.column_vector(m)
    when Matrix
    else
      x, y = m.coerce(self)
      return x + y
    end
    
    Matrix.Raise ErrDimensionMismatch unless row_size == m.row_size and column_size == m.column_size
    
    rows = (0 .. row_size - 1).collect {
      |i|
      (0 .. column_size - 1).collect {
        |j|
        self[i, j] + m[i, j]
      }
    }
    Matrix.rows(rows, false)
  end

+

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