function graphics_test ( )

%*****************************************************************************80
%
%% graphics_test() tests MATLAB graphics.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    14 March 2023
%
%  Author:
%
%    John Burkardt
%
  timestamp ( );
  fprintf ( 1, '\n' );
  fprintf ( 1, 'graphics_test():\n' );
  fprintf ( 1, '  MATLAB/Octave version %s\n', version ( ) );
  fprintf ( 1, '  Test MATLAB graphics.\n' );

  album_bar ( );
  alphabet_binary_tree ( );
  automobile_prepare ( );
  automobile_scatter ( );
  basketball_barh ( );
  brownian_2d_plot ( );
  brownian_2d_simulate ( );
  brownian_animation ( );
  bulgaria_plot ( );
  caffeine_prepare ( );
  caffeine_scatter ( );
  chain_letter_dendrogram ( );
  circle_scatters ( );
  corkscrew_plot3d ( );
  corvette_scatter ( );
  disconnected_graph ( );
  drug_dosage_plots ( );
  five_node_graph ( );
  flow_vector ( );
  genealogy_tree ( );
  geyser_bar ( );
  geyser_bar_prepare ( );
  geyser_histogram ( );
  geyser_scatter ( );
  grid_fill_contour ( );
  grid_surface ( );
  insect_scatter3d ( );
  iris_decision_tree ( );
  iris_subplots ( );
  least_squares_plots ( );
  lissajous_plot ( );
  lynx_plot ( );
  mario_fill ( );
  mod_bar3d ( );
  museum_digraph ( );
  network_graph ( );
  nile_histogram ( );
  nile_plot ( );
  ninety_histogram ( );
  orbital_fill_contour ( );
  predator_plot3d ( );
  president_heights_bar ( );
  president_heights_barh ( );
  president_heights_histogram ( );
  president_heights_prepare ( );
  price_plots ( );
  price_subplots ( );
  random_scatter ( );
  schoolyear_barh ( );
  schoolyear_data ( );
  snowfall_histogram ( );
  snowfall_plot ( );
  snowfall_smoothed_plot ( );
  sombrero_surface ( );
  temperature_prepare ( );
  temperature_scatter ( );
  temperature_scatter3d ( );
  track_bar ( );
  volcano_fill_contour ( );
  volcano_line_contour ( );
  volcano_surface ( );
  web_digraph ( );
%
%  Terminate.
%
  fprintf ( 1, '\n' );
  fprintf ( 1, 'graphics_test():\n' );
  fprintf ( 1, '  Normal end of execution.\n' );
  fprintf ( 1, '\n' );
  timestamp ( );

  return
end
function timestamp ( )

%*****************************************************************************80
%
%% timestamp() prints the current YMDHMS date as a timestamp.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    14 February 2003
%
%  Author:
%
%    John Burkardt
%
  t = now;
  c = datevec ( t );
  s = datestr ( c, 0 );
  fprintf ( 1, '%s\n', s );

  return
end

