function xy = xy1 ( )

%*****************************************************************************80
%
%% XY1 returns XY coordinates for the nodes in example 1.
%
%  Discussion:
%
%    This matrix appears on page 35 of the reference.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    04 September 2015
%
%  Author:
%
%    John Burkardt
%
%  Reference:
%
%    John MacCormick,
%    Nine Algorithms That Changed the Future: The Ingenious Ideas that 
%    Drive Today's Computers,
%    Princeton University Press,
%    ISBN-13: 978-0691158198.
%
%  Parameters:
%
%    Output, integer XY(5,2), the XY coordinates for nodes.
%
  xy = zeros ( 5, 2 );

  xy(1,1) = 2.0;
  xy(1,2) = 2.0;

  xy(2,1) = 3.0;
  xy(2,2) = 2.0;

  xy(3,1) = 1.0;
  xy(3,2) = 1.0;

  xy(4,1) = 2.0;
  xy(4,2) = 1.0;

  xy(5,1) = 3.0;
  xy(5,2) = 1.0;

  return
end
