# File lib/journey/gtg/transition_table.rb, line 64
      def to_svg
        svg = IO.popen("dot -Tsvg", 'w+') { |f|
          f.write to_dot
          f.close_write
          f.readlines
        }
        3.times { svg.shift }
        svg.join.sub(/width="[^"]*"/, '').sub(/height="[^"]*"/, '')
      end