Method: RMatrix::Matrix#condensed

Defined in:

lib/rmatrix/matrix.rb

#condensed(sz = 10, sig = 6, vdots = '\\vdots', cdots = '\\cdots', ddots = '\\ddots') ⇒ Object

# File 'lib/rmatrix/matrix.rb', line 363

def condensed(sz=10, sig=6, vdots='\\vdots', cdots='\\cdots', ddots='\\ddots')
  width  = [sz, self.cols].min
  height = [sz, self.rows].min
  insert_cdots = self.cols > sz
  insert_vdots = self.rows > sz

  width  += 1 if insert_cdots
  height += 1 if insert_vdots

  blank = M.blank(rows: height, columns: width, typecode: Typecode::OBJECT)
  blank.narray[0...width, 0...height] = self.narray[0...width, 0...height]

  blank.narray[0...width, -1] = self.narray[0...width, -1]
  blank.narray[-1,0...height] = self.narray[-1, 0...height]

  blank.narray[0...width, -2] = vdots if insert_vdots
  blank.narray[-2, 0...height] = cdots if insert_cdots

  if insert_cdots && insert_vdots
    blank.narray[-2, -2] = ddots
    blank.narray[-1, -2] = vdots
    blank.narray[-2, -1] = cdots
    blank.narray[-1, -1] = self.narray[-1, -1]
  end

  blank.narray.to_a.map{|line| (sig ? Array(line).map{|v| Numeric === v ? to_significant_figures(v,sig) : v } : Array(line))}
end