function table_io_test01 ( )

%% TABLE_IO_TEST01 tests DTABLE_WRITE.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    27 September 2006
%
%  Author:
%
%    John Burkardt
%
  n = 20;
  m = 5;
  output_filename = 'dtable_05_00020.txt';

  fprintf ( 1, '\n' );
  fprintf ( 1, 'TEST01\n' );
  fprintf ( 1, '  DTABLE_WRITE writes a double precision TABLE file.\n' );

  for i = 1 : m
    for j = 1 : n
      table(i,j) = ( 100 * j + i );
    end
  end

  fprintf ( 1, '\n' );
  fprintf ( 1, '  Spatial dimension M = %d\n', m );
  fprintf ( 1, '  Number of points N  = %d\n', n );

  r8mat_print_some ( m, n, table, 1, 1, 5, 5, ...
    '  5x5 portion of the data written to file:' );

  r8mat_transpose_print_some ( m, n, table, 1, 1, 5, 5, ...
    '  5x5 portion of the TRANSPOSED data:' );

  header = 1;
  dtable_write ( output_filename, m, n, table, header );

  fprintf ( 1, '\n' );
  fprintf ( 1, '  Wrote the header and data for %s\n', output_filename );

  return
end