function human_lines_plot ( )

%*****************************************************************************80
%
%% human_lines_plot() plots lines through the the human point data.
%
%  Discussion:
%
%    This program assumes that the file 'human_points.txt' is available.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    20 May 2021
%
%  Author:
%
%    John Burkardt
%
  fprintf ( 1, '\n' );
  fprintf ( 1, 'human_lines_plot()\n' );
  fprintf ( 1, '  Read the human points data, use it to plot connected lines.\n' );
%
%  Read the data.
%
  v = load ( 'human_points.txt' );
  x = v(:,1);
  y = v(:,2);
%
%  Plot lines.
%
  clf ( );
  plot ( [ x; x(1) ], [ y; y(1) ], 'b-', 'linewidth', 2 );
  axis ( 'equal' );
  grid ( 'on' );
  title ( 'human lines data' )

  filename = 'human_lines_plot.png';
  print ( '-dpng', filename );
  fprintf ( 1, '  Graphics saved as "%s"\n', filename );

  return
end
