%shotcuts for components of vector state
x1	= x(:,1);
x2	= x(:,2);

%Let's produce an animated plot: 
figure
axis([-1 5 -2 2]);
link1 = line('xdata', [0, 0], 'ydata', [-2, 2]);
link2 = line('xdata', [0, x1(1)], 'ydata', [0,0], 'Marker', 'o', 'MarkerSize', 30);
for i=1:length(x1)
  set(link2,'xdata', [0, x1(i)]);
  drawnow;
end