method

diagonal

ruby latest stable - Class: Matrix

diagonal(*values)

public

Creates a matrix where the diagonal elements are composed of values.

Matrix.diagonal(9, 5, -3)
  =>  9  0  0
      0  5  0
      0  0 -3

# File lib/matrix.rb, line 115
  def Matrix.diagonal(*values)
    size = values.size
    return Matrix.empty if size == 0
    rows = Array.new(size) {|j|
      row = Array.new(size, 0)
      row[j] = values[j]
      row
    }
    new rows
  end

diagonal

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