function r8mat_uniform_write ( ndim, n, seed, r, file_out_name )

%% R8MAT_UNIFORM_WRITE writes a pseudorandom R8MAT to a file.
%
%  Discussion:
%
%    The initial lines of the file are comments, which begin with a
%    '#' character.
%
%    Thereafter, each line of the file contains the NDIM-dimensional
%    components of the next entry in the dataset.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license. 
%
%  Modified:
%
%    21 September 2006
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Input, integer NDIM, the spatial dimension.
%
%    Input, integer N, the number of elements in the subsequence.
%
%    Input, integer SEED, the seed for the random number generator.
%
%    Input, real R(NDIM,N), the points.
%
%    Input, string FILE_OUT_NAME, the name of the output file.
%
  file_out_unit = fopen ( file_out_name, 'w' );

  if ( file_out_unit < 0 )
    fprintf ( 1, '\n' );
    fprintf ( 1, 'R8MAT_UNIFORM_WRITE - Fatal error!\n' );
    fprintf ( 1, '  Could not open the output file:\n' );
    fprintf ( 1, '  "%s".\n', file_out_name );
    error ( 'UNIFORM_WRITE - Fatal error!' );
  end

  today = timestring;

  fprintf ( file_out_unit, '#  %s\n', file_out_name );
  fprintf ( file_out_unit, '#  created by R8MAT_UNIFORM_WRITE.M\n' );
  fprintf ( file_out_unit, '#\n' );
  fprintf ( file_out_unit, '#  File generated on %s\n', timestring );
  fprintf ( file_out_unit, '#\n' );
  fprintf ( file_out_unit, '#  NDIM = %d\n', ndim );
  fprintf ( file_out_unit, '#  N =    %d\n', n );
  fprintf ( file_out_unit, '#  SEED = %d\n', seed );
  fprintf ( file_out_unit, '#  EPSILON (unit roundoff ) = %e\n', ...
    r8_epsilon ( ) );
  fprintf ( file_out_unit, '#\n' );

  for j = 1 : n
    for i = 1 : ndim
      fprintf ( file_out_unit, '  %10f', r(i,j) );
    end
    fprintf ( file_out_unit, '\n' );
  end

  fclose ( file_out_unit );

  return
end