hold on
x = 0 : 1/25 : 10 ;
Sx = sin (x) ;
plot (Sx,'red') ;
Sx_N = Sx + 0.1 * rand ( size (Sx)) ;
plot (Sx_N)
net  = newhop(Sx);
Ai = {Sx_N}
[Y,Pf,Af] = sim(net,{1 1000},{},Ai);
 plot(Y{1},'green');