A=[0 0 .42;
    .6 0 0;
    0 .75 .95]
eigs=eig(A)
[V,d]=eig(A)	    
100*V(:,3)/V(3,3)
norm(d(1,1))

N = 50;
x = [0;0;100];
B = [x];
for n = 1:N-1,
  x=A*x/eigs(3);	% eigs(3) is the real eigenvalue
  B = [B x];
end

title('Buffalo Populations');
xlabel('calf,yearling,adult'); 
ylabel('relative proportion'); 
plot(B)
clg
pause(.1)

title('Buffalo orbit');
xlabel('calf'); 
ylabel('yearling'); 
plot(B(1,:),B(2,:))
clg
pause(.1)