function A = six_inc ( )

%*****************************************************************************80
%
%% six_inc() returns the incidence matrix for a 6-node example.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    01 March 2020
%
%  Author:
%
%    John Burkardt
%
%  Output:
%
%    integer A(6,6), the incidence matrix.
%
  A = zeros ( 6, 6 );

  A(1,2) = 1.0;
  A(2,3) = 1.0;
  A(2,5) = 1.0;
  A(3,1) = 1.0;
  A(3,4) = 1.0;
  A(4,1) = 1.0;
  A(5,2) = 1.0;
  A(5,6) = 1.0;
  A(6,4) = 1.0;

  return
end
